travel trailer hot water heater gas or electric

• Maintenance , Water Heaters

Should I Run My RV Water Heater on Gas or Electric?

A lot of people ask me whether gas or electric is best for an RV water heater.

In my opinion, the best water heater option for most RV owners is a hybrid water heater that can use either propane gas, electricity, or both.

These water heaters can provide fast hot water when tethered to a campground, or camping remotely. Hybrid water heaters provide fast hot water by switching from electricity to gas and back again, depending on the available power source. This makes hybrid water heaters cost effective and convenient.

But if you want to go either gas or electric, then read on and I’ll explain the pros and cons of each.

Table of Contents

Is Gas Better Than Electric for My RV Water Heater?

Not necessarily. Both propane gas and electricity have a place among RV owners. 

For example, electric water heaters are very convenient when connected to a campground’s electricity, also known as shore power. This not only powers very useful amenities like heat and air conditioning, but provides plentiful hot water. 

However, electric water heaters can take up to an hour to heat 6 -10 gallons of water, which can get used up very quickly. A family camping trip can go through some serious hot water, so in these situations, a propane gas water heater is preferable.

Propane gas water heaters have the advantage of producing heat much more quickly than electricity. These water heaters literally heat the water using a flame, so they get very hot, very quickly. This can be especially useful when the RV is in a remote location. 

Most RV owners admit that creature comforts like warm showers in the morning can make the difference between a great trip and an uncomfortable one.

What is the Difference Between a Propane Water Heater and an Electric Water Heater?

Recreational vehicles have long used propane gas to power everything from camp stoves to televisions. The nature of RVs requires that built-in appliances such as stoves, heaters, and water heaters have the capability of operating without electricity. 

As such, propane gas is often considered a lifeline to RV owners even when electricity is available. This is often because most camping facilities only provide 30 amp electrical service at the campsite. Larger RVs often have amenities like air conditioners that draw nearly all the available “shore power” upon start up. This is often a problem, because when another appliance, like a water heater, is also running the circuit can overload. If this occurs, either a fuse or circuit breaker will trip, shutting off the power.

• 𝟭.𝟱𝟴𝗚𝗣𝗠/𝟲𝗟 𝗣𝗿𝗼𝗽𝗮𝗻𝗲...
• 𝗚𝗼𝗼𝗱 𝗳𝗼𝗿 𝗢𝗳𝗳-𝘁𝗵𝗲-𝗚𝗿𝗶𝗱 -...
• 𝗔𝗱𝘃𝗮𝗻𝗰𝗲𝗱 𝗦𝗮𝘁𝗲𝗳𝘆...
• 𝗟𝗘𝗗 𝗗𝗶𝗴𝗶𝘁𝗮𝗹 𝗗𝗶𝘀𝗽𝗹𝗮𝘆 -...
• 𝟭-𝗬𝗲𝗮𝗿 𝗖𝘂𝘀𝘁𝗼𝗺𝗲𝗿...

Propane gas water heaters use a pilot light, which is a small open flame that ignites a burner under the water heater. This is in contrast to an electric water heater, which uses anodes (a very thick wire) inside the water heater to heat the water. Both versions have their advantages and disadvantages.

In recent years, manufacturers have tried to help alleviate these issues by getting creative. Since it is not a good idea to leave propane gas on while the RV is moving, often the water in the water heater will be cooled by the time the RV reaches its destination.

To resolve this, new technology has emerged that uses the RV’s engine heat to keep the water relatively warm. This results in much faster hot water when the RV stops and returns to shore power.

How Can I Improve the Performance of My RV Water Heater?

The best way to extend the life of an RV water heater is regular maintenance. 

RVs tend to sit idle for long periods, so most RV owners are used to the standard chores. These often include winterizing, annual inspections, and so on. Specific to water heaters, RV owners often have a checklist they go through each season. This checklist can include:

Flushing the Tank

This is especially important at the end of the season, as corrosion usually occurs while the system is sitting idle. Depending on the water source, many times shore water will be very hard water. Lime deposits and other minerals can build up in the tank and particularly the lines, which can cause very inconvenient failures. 

Therefore, regular system flushing is usually recommended every six months, whether the RV has been used or not.

Keep the Tank Full of Water

Many RV owners have learned to keep the RVs electric water heater tank full when the RV is moving. This is often due to the issue of connecting to shore power. 

When campers arrive at a campsite, often the first task is connecting to the 30 amp power supply. This automatically turns on the appliances inside the camper (that have no on/off switch), such as the water heater. 

As mentioned earlier, in these electric water heaters, a large wire called an anode heats up to several hundred degrees. In normal operation, this heats the water surrounding the anode, producing hot water. However, if the tank is empty the anode cannot dissipate the heat and will usually burn out, leaving the RV without hot water.

Replace the Anodes Annually

In contrast to residential homes, it is recommended to RV owners to replace the water heater anodes annually. 

In a residential electric water heater, these anodes can last for years. In RVs however, if these anodes can fail due to corrosion leaving the campers inconveniently without hot water. Therefore, it is recommended to replace these anodes annually to ensure the RV has hot water when it’s needed.

FAQ RV Water Heaters

Should i leave my rv propane water heater on all the time.

It is not recommended to leave a propane powered water heater on all the time, especially when the RV is moving. This is because the gas lines are usually made from flexible materials such as rubber, which can dry rot and leak over time. While the RV is moving, these brittle lines can rupture and cause a dangerous propane gas leak.  It is therefore recommended to switch off the propane while the RV is in motion.

Electric water heaters do not have this weakness. 

Electric water heaters, unlike propane water heaters, are considered completely safe to operate while the RV is moving or stationary. However, the water heater should remain full of water.

Will Leaving My RV Water Heater on All the Time Be Expensive?

Any power consumption, whether gas or electricity will result in costs. However, RV owners tend to want to be comfortable, so many consider the additional expense worth the creature comfort it provides. 

However, for those looking to camp on a budget, turning off the water heater anytime it is not in use will result in cost savings.

Will Leaving My RV Hot Water Heater on Wear It Out?

Although any gas or electrical component will eventually wear out the more it is used it is not typically considered a concern. This is because propane gas water heaters really have no moving parts, which tend to wear out first. These water heaters depend on a pilot light to ignite the burners under the tank, so parts tend to last a while. 

Electric water heaters however, will suffer considerably more wear due to the constant heating and cooling of the anodes. This is why it was recommended earlier to replace the anodes annually.

Wrapping Up

Having a reliable water heater, whether it is gas or electric, is one of the better decisions you can make for your RV. In addition to installing a water softener for your RV , which is super easy, having the best water heater will ensure you will reliably have hot water when you need it.

Nick Lopresti is the founder of YourH2Home and a home improvement expert. He has years of experience writing about various home improvement topics, mostly as it pertains to water systems.

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• We Compared Gas vs Electric Tankless Water Heaters | The Result?
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• What is a Non Electric Water Softener
• How Long Will A Water Heater Last If It Starts Leaking?

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How Do RV Water Heaters Work?

There are several types of RV water heaters, mostly distinguished by their power source. The most common is a gas/electric model, followed by electric only and gas only. There are also tankless RV water heaters, also known as instantaneous or on-demand water heaters. Let’s look at each below.

Gas-only models are powered by propane. They are the most cost-effective units to purchase and run. Although you can use them at the campground, they are also great for off-grid use where electricity is not as attainable. They are available with a manual or electric pilot. 

Electric Only

Electric-only models are powered by 120VAC, so you’ll have to be hooked up to shore power or a generator to use them. Since you’ll be plugged into shore power, these are great for those who spend most of their time at the campground. 

Gas/Electric

Gas and electric models are fueled by propane and 120VAC electricity. They are also called “hybrids”. Like RV refrigerators, these water heaters allow you to maximize your resources for the best efficiency. When on shore power, you can switch to electric. When boondocking, you can use propane. You can also use both gas and electricity for greater efficiency. 

RV Tankless Water Heater

Tankless water heaters are becoming increasingly common on new RVs. Also known as “instantaneous” or “on-demand” water heaters, they heat water as it passes through a coil. They can be gas or electric, but gas is most common for RV use. Although often used, the term “instantaneous” can be misleading, as there is still a 20 to 30-second delay in getting the water heated and through the pipes to the faucet.

Another reason for the popularity of tankless water heaters is their size. Compared to a standard RV water heater with a traditional tank, they are much more compact, allowing for more mounting options. In addition to size, switching to tankless will save you a considerable amount of weight.

Where to Find Your RV Water Heater

The location of your RV’s water heater depends on the manufacturer. Most place them on the off-camp side, opposite the main entry door. However, your water heater’s location can be towards the front or back of your RV if you have a rear kitchen or front kitchen floorplan.

Here’s an example of what your water heater’s exterior access panel may look like:

Here’s an example of a water heater tank and plumbing lines from the inside of an RV:

Knowing where all your RV components are located is generally helpful. This is especially true for water heaters, as you need to know where to  drain an RV water heater.

How Does a DSI RV Propane Water Heater Work?

Ensuring the tank is full is the first step in operating any water heater before turning the water heater on with your RV’s control panel. If you have a gas/electric model, you can heat water in the tank with propane or the electric element. You can also employ both for quick hot water recovery. 

Propane is the primary heating source for gas/electric models. The propane is burned at the end of the burner tube, and the flame enters the flue tube. Heat and exhaust gasses are carried through to an exhaust vent at the top of the water heater.

Here’s the sequence of operation when your water heater uses propane:

• The propane control switch is turned on.
• 12 VDC goes through the thermostat – a normally closed switch.
• The thermostat demands heat, and contacts close, opening the propane valve.
• The spark ignites the gas in the burner tube.
• When a set temperature is attained (usually 140℉), the thermostat’s electrical contacts open, closing the gas valve.

How Does a Gas/Electric RV Water Heater Work on Electric?

In the electric mode, sufficient 120-volt AC (VAC) power is required to heat the electric element. This mode will only be an option when plugging into shore power or using an RV generator .

Technician Tip: The requirements for voltages, amperages, or wattages are on the data plate or in your owner’s manual.

Here’s the sequence of operation when your water heater uses electricity:

• The electric switch is turned on.
• 120 VAC goes through the thermostat – a normally closed switch.
• The thermostat demands heat and contacts close.
• 120 VAC goes through the ECO (energy cut-off) switch, normally closed.
• 120 VAC goes to the heating element and heats water in the tank.
• When the set temperature is attained, the thermostat’s electrical contacts open, removing power from the electric heating element.

Technician Tip: Steps 2 and 4 may be reversed on certain models.

How Does a Tankless RV Water Heater Work?

Also known as on-demand, tankless RV water heaters provide instantaneous hot water. When you open a hot water fixture, it triggers the heat exchanger.

Unlike traditional RV water heaters, the burners are only activated when the faucet is opened. When the faucet is turned off, power is removed from the water heater burner.

The water temperature can be adjusted at the control panel, but there is also a redundant energy cut-off (ECO) switch, or “high limit switch,” that monitors the heat. These ECO switches shut off the heat source if the water temperature gets too high and turn back on when the temperature drops back into the set range.

What Is an RV Hot Water Heater Pressure Relief Valve?

All water heaters have a pressure relief valve. This valve is designed to release water and pressure into the air if pressures or temperatures get too high, jeopardizing the heater’s structural integrity or posing a risk of burns to the user. The valve opens when pressure/temperature rises above a set point and closes when it returns to safe levels.

How Much Propane Does an RV Water Heater Use?

The amount of propane an RV water heater uses is affected by many factors, the most important of which is type. Tankless water heaters consume less propane than tank-style water heaters. This is because they only heat water when needed, which makes them more efficient. 

Another factor, perhaps the most obvious, is usage. If you have a family of four who each take a hot shower in the morning, you’ll use far more propane than a couple who use theirs sparingly.

It’s difficult to estimate the amount of usage based on these factors, but on average, most RV water heaters will run on a 20-pound cylinder for a few days. That said, this figure will go down if you use your propane for other appliances. 

If you need to extend the amount of hot water you get out of a single cylinder, there are some things you can do. The first is turning your faucet temperature down to the lowest comfortable level. The next would be to use a larger or possibly retrofit a second propane cylinder. Switching from tank-style to tankless will also allow you to conserve more propane.

Hopefully, this has clarified how RV water heaters work. Here are a few more resources to help you use and maintain your RV water heater: 

• How To Choose an RV Water Heater
• Why Is My RV Hot Water Heater Not Working?
• How To Turn on the Water Heater In Your RV

What questions do you have about how RV water heaters work? Let us know in the comments below.

• Comment (11)

My water heater ignites but goes out must I have the hot water turned on when I ignit it’s a 2009 StarCraft

Hi Stratton,

I’d like to clarify a few things to better answer your question:

1. Are you asking if the hot water needs to be turned on at the faucet when you ignite the water heater? 2. What is the make/model of the specific water heater in question? 3. Have you checked that you have adequate propane supply?

You can also find a service center near you using this link if you want to schedule a WH diagnostic: https://rv.campingworld.com/rv-service-maintenance#js-anchor-locations

Your gas or electric water heater’s “VAC” setting is a ground-breaking energy-saving innovation. It’s a contraction of “vacation,” suggesting that this technology only operates when the water heater isn’t used for a long length of time.

Great post! Gas Water Heaters truly add a touch of luxury to the nomadic lifestyle. Your blog beautifully highlights the significance of these heaters in transforming our mobile homes into cozy havens, where hot water is no longer a luxury but a staple.

Thanks for the inspiration! You show a great knowledge of the subject.

I bought a 2005 Holiday Rambler 28′ 5th wheel used. It had no owners manual. I just hooked water up to it and confirmed nothing leaks and water is flowing. I turned the hot water on in both the sink and shower, which I’m assuming would fill the hot water tank. Although this camper has switches for both propane and electric. So I’m not sure if there are two different tanks, or what? Currently I only plan to use the electric water heater portion. Should it be safe now to flip it on? Where is the bypass that you spoke of in your article? I guess it would also be wise to check the anode bar as well to ensure the previous owner didn’t let it fully corrode. I’ve had to fix numerous things in this camper as it appears the previous owner neglected some maintenance.

To solve your first issue, I’d recommend heading to the Holiday Rambler site and downloading a digital version of your RV’s owner’s manual: https://www.holidayrambler.com/owners-manuals/

Here are a few answers to your other questions:

Q: I’m not sure if there are two different tanks, or what?

A: There are not. Your water heater should have a single tank, but it can be heated using propane or an electric heating element.

Q: Should it be safe now to flip it on?

A: It’s safe to turn on your water heater if you’re connected to city water or your fresh water tank is filled. The only danger to turning it on is when you know the heater’s tank is completely empty.

Q: Where is the bypass that you spoke of in your article?

A: Depends on the exact make and model. You’ll usually find the bypass valve on the plumbing lines just outside of your water heater’s tank. But finding the proper owner’s manual is recommended before troubleshooting further.

Hope all of that helps!

You’re most welcome!

Your RV water heater has a problem when the DSI fault lights up stays on for a long time. It is commonly not extreme, and a little troubleshooting can usually do the trick.

I have a suburban gas elec 21lt heater with a red and green wire coming out of it where do they go on the 12v switch and on the same switch where does the 12v wire go cheers

Do you know the model number on that unit? It should be located by opening the access door on the outside of your RV.

With that info, I can try to track down the wiring diagram for you.

Hope that helps!

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6 Best RV Tankless Water Heaters. Electric and Propane Versions

No matter how much you love RVing, a really common downside is the limited availability of hot water. Rather than wait around for your tanked water heater to ever-so-slowly heat up, why not invest in the best RV tankless water heater for unlimited hot water and long, relaxing, hot showers in your RV?

Not only will you feel more refreshed and relaxed, you could also save yourself quite a bit of cash on your fuel bills. Read on to discover our favorite models.

Table of Contents

• 1 What is an RV Tankless Water Heater?
• 2.1 EcoSmart 8 KW Electric Tankless Water Heater
• 2.2 Camplux Tankless Propane Water Heater
• 2.3 Stiebel Eltron Tankless Heater
• 2.4 Eemax Electric Tankless Water Heater
• 2.5 PrecisionTemp RV-550 Tankless Water Heater
• 2.6 Marey Propane Gas Tankless Water Heater
• 3 Compare the Best RV Tankless Water Heaters
• 4.2 Power Source
• 4.3 Water Heater Size
• 4.4 Flow Rate
• 4.5 BTU’s Per Hour
• 4.6 Ease of Installation
• 5 Tank Vs Tankless Water Heater
• 6 Benefits of an RV Tankless Water Heater
• 7 Top RV Tankless Water Heaters Video
• 8 Frequently Asked Questions about RV Tankless Water Heaters
• 9 Final Thoughts

What is an RV Tankless Water Heater?

Most standard RV water heaters come with a tank that can hold between 6 to 10 gallons of water. Compare this to your bricks-and-mortar water heater tank of over 40 gallons and you can see why getting the whole family cleaned and showered on vacation can be a bit of a struggle.

Add in the hot water for the kitchen dishes and cleaning up, even if you’re RVing as a couple, if you’re last to shower, chances are it’s a race against the clock to get clean without getting freezing cold.

Cue the tankless water heater. These ingenious devices heat your water as you use it. So, as long as you’re hooked up to city water, you’ve basically got an unlimited supply of hot water at your disposal whenever you turn on your faucet.

Best RV Tankless Water Heater

Looking for the best RV tankless water heater? Check out our reviews below for some of the best models around.

EcoSmart 8 KW Electric Tankless Water Heater

Buy from Amazon

The EcoSmart 8KW Electric Tankless Water Heater is designed for use in areas with water inlet temperatures of 67 degrees and over. In colder climates, it’s a good choice for low-flow applications, such as your sink for washing hands or dishes.

Depending on your incoming water temperature, this compact unit can provide between 0.8 and 1.9 gallons-per-minute. So, in warmer areas, it can be used to power a water-saving 1.5 GPM RV shower, although you won’t be able to run multiple faucets simultaneously. The front LCD panel allows you to set your desired water temperature between 80-140 degrees F in increments of one degree.

It has a low activation flow rate of just 0.3 GPM, making it a good choice for low-pressure installations, common with RVs. Measuring just 11.5” high by 8” wide, with a low 5.3lb weight, it’s a good size for a small trailer or motorhome. Thanks to its advanced self-modulating technology it will save you power by adjusting the amount of energy based on how much water you are using and your set temperature.

Bear in mind that installation can be a little laborious. What’s more, as this unit requires 8,000 Watts, 240V, and a 40A breaker, its energy requirements are pretty high for your average RV. It does have field replaceable parts and comes complete with a limited lifetime warranty for your peace of mind.

All in all, a good affordable and compact tankless water heater, but you’ll need upgraded circuits in your RV and the correct power supply.

Camplux Tankless Propane Water Heater

Looking for a portable tankless water heater for off-grid use? The Camplus Tankless Propane Water Heater runs off standard propane bottles and 2 D-cell batteries, meaning you can enjoy a hot shower, even when you’re not hooked up to shore power.

It has a 1.58 GPM hot water output with a temperature raise of 114.8 degrees F, plenty enough to enjoy a hot shower while you’re out exploring with your camper. Just be aware that this unit is not recommended for use at elevations over 2,000 feet.

Thanks to its convenient folding handle, you can carry this unit nearby to set up your camp shower. It even comes complete with a shower head and hose, as well as a gas regulator. If you want to install it inside your RV, you will need to correctly vent the unit and to install a flue pipe, which is not included with the unit itself. Thanks to its oxygen depletion sensor protection, this unit will shut down automatically if it is not adequately vented.

It has a low 3.0 PSI minimum operating water pressure and an operating propane gas pressure of 0.4PSI. Putting out 41,000BTU/hour, you can use this six-liter portable tankless water heater with a modified water system and 12V pump.

If you enjoy exploring the great outdoors, but are limited to developed sites by your showerless RV, this portable shower and RV tankless water heater will enable you to enjoy warm showers off-grid.

Stiebel Eltron Tankless Heater

The Tempra 12 Plus Tankless Water Heater by Stiebel Eltron is designed to give you maximum energy efficiency with accurate temperature delivery at all times.

As this unit is primarily designed for bricks-and-mortar use, requiring a minimum recommended electric service of 100A, it’s not going to be suitable for the vast majority of RVs, unless you have specialist electrical knowledge.

For those that do and want to try to make it work, this 12kW, 240V model offers a water output temperature between 68-140 degrees F. This eco-friendly unit features a backlit display that shows you just how much you have saved on energy costs. It also has two memory presets so you can save your favorite water temperature settings.

Silent in operation, with no venting required this deluxe model features Advanced Flow Control patented technology to ensure that your water maintains a constant temperature. It also has a great 0.37 GPM low-pressure minimum activation flow and can supply a shower from 1.3GPM to 2.5GPM depending on your water pressure and water inlet temperature .

To install, you’ll need a 50A double pole circuit breaker, as well as the appropriate gauge cables to upgrade your electrics, plus an electricity supply that will give you the amps that you need. For most RVs a propane or gas model is going to be a much more practical option, or an electrical tankless water heater with a much lower draw that is compatible with a standard electrical hookup.

Nonetheless, this is a high-quality model that comes complete with a seven year leakage and three-year parts warranty.

Eemax Electric Tankless Water Heater

Able to produce enough hot water for up to one shower and two sinks in cold climates, or up to four showers simultaneously in warm climates, the Eemax Electric Tankless Water Heater EEM24018 is a serious piece of kit . It uses some of the most advanced technology to save energy without compromising on performance so you get non-stop unlimited hot water.

Designed for residential and commercial properties, if you have an upgraded RV electrical system in place and a compatible electrical supply, you could in theory fit one of these, although it does require two 40amp 220V circuit breakers. Sadly, this makes it a complete no-go for your average setup, where propane or gas models are a much better, more logical choice.

With its stylish looks and compact size, this water heater can save you space. Its high energy-efficiency rating of 99.8%, makes it a great choice for the planet as well as your wallet. Suitable for low-pressure water supplies, it has a good 0.3GPM flow activation, with a rated minimum pressure of 25PSI and a maximum of 150PSI.

The digital temperature control panel allows you to select your water temperature in one-degree increments, ranging from 80-140 degrees F. You’ll need two 8 AWG wires to install this 75-Amp 18,000 W model. It also takes ½” plumbing connections, so you won’t have to solder any pipework.

PrecisionTemp RV-550 Tankless Water Heater

With its high 55,000BTU output, this propane RV-specific tankless water heater by PrecisionTemp makes a great choice for long, hot showers in your motorhome. It uses less than 1.5 Amps in regular operation, or up to 3 Amps when its cold weather protection system is activated.

Highly effective and energy-efficient, the RV-550 keeps your water temperature constant regardless of your inlet temperature and flow rate, with its optimal operation at 1 GPM. Weighing just 32 pounds, it is considerably lighter than a standard-sized water heater tank, saving you plenty of money on fuel costs.

Designed for four-season use with its freeze-protection system, just make sure that your 12V and gas are on, or it is also easily winterized if you only use your RV seasonally. Self-modulating, this RV tankless water heater self-adjusts its gas use based on your usage for consistent temperature control and improved energy efficiency.

Hand-assembled and tested in the USA, the RV-550 is a great choice for your motorhome. Installation is easy with the unit conveniently venting through your sidewall. If you are looking for unlimited hot water in your RV, this model is well worth the extra cost given its high performance levels and RV-specific design.

Marey Propane Gas Tankless Water Heater

Primarily designed for residential use, the Marey Tankless Water Heater can be fitted to your RV provided you vent it externally and leave enough clearance around it.

Available in a choice of two models, running off either propane or natural gas, this 10L tankless heater can provide up to 115 degrees F depending on your water inlet pressure and temperature.

Less suitable for northern states with colder climates, you’ll want to have a minimum water inlet temperature of 57 degrees F to be able to use it for your RV shower. It is not recommended for use in areas where the inlet temperature is under 47-degrees F.

With its compact, space-saving design, this unit is a popular low cost choice. Hardware is included, however, you will need to purchase ventilation pipes separately. You will also need to pick up two D-cell batteries for the ignition system, as it is not designed to run off your RV’s 12V DC power.

If you have good water pressure and a fairly warm supply, you can use this RV tankless water heater to supply two to three points of use simultaneously with its maximum output of 3.1GPM. This makes it a good choice for larger trailers and motorhomes, especially if you like to take your whole family RVing .

With a good five year warranty, if you are looking for an inexpensive propane or natural gas tankless water heater, this model makes a great budget choice.

Compare the Best RV Tankless Water Heaters

Buyer’s Guide to Buying the Best RV Tankless Water Heater

Finding the best RV tankless water heater can seem like a never-ending quest. With so many models to choose from, mostly aimed at the residential market, don’t make the mistake of purchasing an RV-incompatible model.

Read through our buyer’s guide and make sure you make the right choice of tankless water heater for your RV.

As with any major RV upgrade, it is important to carefully plan your budget. While there are a lot of cheap residential tankless water heaters around, they aren’t always compatible with RV use. RV models are more expensive as they are designed to resist the stresses and strains of being installed in a moving vehicle.

Purchasing a residential model at a reduced price can save you money, but even if it is compatible, who’s to say it won’t break after a few trips, or that installing it on an RV will invalidate your warranty. Paying out more for an RV-specific model can lead to savings in time and money on installation.

Your average RV tankless water heater from a reputable brand will come in at around $1,000. Alternatively, cheaper residential versions start at around $250. Portable RV tankless water heaters for use as outdoor camp showers can be found for under $200.

Power Source

You’ll find electric, propane, and natural gas tankless water heaters. Let’s take a look at the benefits and drawbacks of each.

Electric tankless water heaters tend to be cheaper than gas or propane models. However, they are less suitable for use off-grid. Be careful when selecting an electric tankless water heater for your RV, some residential versions are not compatible with your average RV electrical systems and hookups, requiring over 5,000 Watts to operate.

Propane is a good choice for hot water in your RV if you like to spend time off-grid. While a propane tankless water heater will cost you more than an electric model, you’ll have more freedom of where you can use it. Bear in mind that if you are installing a propane model inside your RV, it will need correctly venting.

RV-specific versions usually install and vent conveniently through your sidewall. Your installation will also need annual maintenance checks. RV specialists in tankless water heaters, such as Giraud, provide models that run off propane and your 12V DC power. Other styles may require D-cell batteries.

Natural Gas

Fewer natural gas models are available, but they could be a better choice for you if natural gas is more readily available where you RV. Like propane, you’ll need to make sure that your RV natural gas tankless water heater is sufficiently vented and perform annual maintenance checks.

Water Heater Size

RV tankless water heaters are designed to fit neatly into the same space that your previous water heater occupied. When looking for a new model be sure to take the existing dimensions into account, or else you may end up having to cut out a larger space. Doors, to cover your tankless water heater, are often sold separately.

The flow rate is how much hot water your heater can provide per minute. For reference, a water-saving shower head typically utilizes around 1.5 GPM, with a kitchen sink half-on using around one GPM. Bear in mind that your heater’s flow rate will be impacted by your water inlet pressure and temperature.

Your water heater may be able to supply your shower and kitchen sink simultaneously in a warm climate but when used in a cold climate, you may struggle to get a decent shower.

BTU’s Per Hour

One BTU (British Thermal Unit) is the amount of energy that you need to heat one pound of water by one degree Fahrenheit. Basically, the higher the number of BTUs your tankless water heater has, the faster it can heat up your water. Higher BTU ratings are essential if you RV in colder areas with a much lower water inlet temperature.

Ease of Installation

Most RV tankless water heaters are fairly easy to fit provided you read through the manufacturer’s instructions carefully.

Most RV specialist tankless water heater manufacturers have developed their products for an easy install with your RV, by using their extensive knowledge of RV plumbing, 12V electrics, and LP gas.

To install an RV tankless water heater, you won’t need any special plumbing or gas lines.

Tank Vs Tankless Water Heater

When you replace your tank water heater with a tankless version, you no longer have such a high energy consumption keeping that water hot and ready for when it’s needed. We’ll go over the benefits of an RV tankless water heater in the next section, here are some reasons you may prefer a tank set up:

Purchase price – the cost of replacing your tank water heater with a tankless model is going to be quite a bit more than replacing it with another tank version.

Boondocking – If you frequently boondock, you may find that a tank version works better for you. When you’re out in the wilderness and every drop of water counts, you won’t want to waste precious amounts waiting for the hot water to run through, even if we are only talking about seconds.

High elevations/cold climates – propane tankless water heaters are less efficient in colder climates or when used at elevations over 2,000 feet.

Preset water temperature – if your control panel is outside and you like to shower hotter than your significant other, it can be annoying when you forget to alter it before you get undressed and under your shower.

Benefits of an RV Tankless Water Heater

Having unlimited hot water is the main advantage of an RV tankless water heater, with standard tanks only holding around 10 gallons, if you like a long shower or are RVing with your family, it’s pretty much impossible to get by without using campsite facilities. Here are the main benefits you can look forward to with your new RV tankless water heater:

No more running out of hot water – you can get the dishes clean and take a relaxing shower as your reward afterwards.

Hot showers for everyone – no more arguing over who gets a shower on your family vacation.

More energy efficient – do your bit for the planet and save energy with a tankless water heater.

Save money – you can also save money on fuel for heating water as you will only pay to heat it up as and when you need it.

Lower weight – you will also save money on your fuel costs, tankless models are lighter than factory-installed water heaters.

No more waiting around for hot water – have a hot shower when you need/want to.

If you are RVing as a family, or just love spending time under a hot shower relaxing, a tankless water heater is a must for your RV. It also makes RV life much more convenient, especially if you are living in your RV full time.

Top RV Tankless Water Heaters Video

Frequently Asked Questions about RV Tankless Water Heaters

As you explore the world of RVing and seek to enhance your on-the-road experience, finding the best water heating solution for your recreational vehicle is essential. RV tankless water heaters offer numerous advantages over traditional tank-based systems, providing an efficient and continuous supply of hot water during your adventures. To help you make informed decisions and address common queries, we have compiled a list of frequently asked questions about RV tankless water heaters. Read on to discover valuable insights and guidance as you navigate the world of on-demand water heating for your RV.

What is a tankless water heater for RVs?

A tankless water heater for RVs, also known as an on-demand water heater, is a compact and efficient water heating system that provides hot water on-demand without the need for a storage tank. It heats water instantly as it passes through the unit, offering continuous hot water whenever needed.

Why should I consider a tankless water heater for my RV?

Tankless water heaters have several advantages over traditional tank-based systems. They provide hot water on demand, which means you never run out of hot water during your RV adventures. They are more energy-efficient, compact, and lightweight, helping you save space and reduce fuel consumption.

How does a tankless water heater work?

A tankless water heater uses a heat exchanger to heat the water as it flows through the unit. When you turn on the hot water tap, the cold water enters the heater, where it is quickly heated by a gas burner or electric heating element. The heated water then flows out of the unit, delivering hot water instantly.

Are tankless water heaters suitable for all RV sizes?

Yes, tankless water heaters are available in various sizes and capacities to accommodate different RVs. It’s important to choose a unit that matches the hot water demand of your RV. Smaller RVs may require lower capacity heaters, while larger RVs with multiple bathrooms and appliances may need higher capacity units.

Can I install a tankless water heater myself?

While some DIY enthusiasts may be able to install a tankless water heater themselves, it’s recommended to hire a professional for proper installation. Installing a water heater involves knowledge of electrical or gas connections, venting requirements, and plumbing, which can be complex for someone without experience.

Are tankless water heaters compatible with all RV plumbing systems?

Most tankless water heaters are compatible with standard RV plumbing systems. However, it’s essential to check the specifications and requirements of the specific model you’re considering to ensure compatibility. Some units may require certain plumbing modifications or additional components for proper installation.

Are tankless water heaters more expensive than traditional RV water heaters?

Tankless water heaters generally have a higher upfront cost compared to traditional tank-based heaters. However, they are more energy-efficient, which can lead to long-term cost savings. Additionally, tankless water heaters have a longer lifespan, reducing the need for frequent replacements.

Can tankless water heaters work with both propane and electric power?

Yes, there are tankless water heaters available that can be powered by either propane or electricity. Propane-powered units are common in RVs and are suitable for boondocking or dry camping where electrical hookups are not available. Electric-powered units are suitable for RVs with access to shore power or campsites with electrical connections.

Do tankless water heaters require regular maintenance?

Tankless water heaters generally require minimal maintenance. It’s recommended to flush the system periodically to remove any mineral deposits or debris that can affect performance. Consult the manufacturer’s guidelines for specific maintenance requirements for your chosen unit.

Can I use a tankless water heater in cold weather conditions?

Tankless water heaters can be used in cold weather conditions, but you should choose a model specifically designed for such environments. Some tankless water heaters have freeze protection features or are designed to operate in low temperatures. Ensure that the unit you select is suitable for the climate conditions you’ll encounter.

Final Thoughts

There are an increasing number of RV tankless water heaters on the market. Like any big decision, don’t rush in too quickly. Take your time to consider which model is best for your needs and RV.

If you have a small camper or trailer without a shower, we recommend taking a closer look at the budget-priced Camplux Portable Propane Water Heater . Ideal for exploring away from developed sites, it even comes complete with a showerhead so you can set up your very own private camp shower.

On a budget? Take another look at the affordable Marey Propane Gas Tankless Water Heater . Much cheaper than RV-specific models, this propane-powered version has a high maximum output of 3.1GPM, enough to simultaneously heat several faucets.

Looking for the very best tankless water heater for your RV? The RV-550 by PrecisionTemp is designed for four-season use in your RV. Easy to install, this special RV version weighs 32 pounds and runs off propane and your 12V DC system.

Thanks to its high 55,000 BTU output, your shower will stay nice and hot for as long as you want it to. What’s more, as it’s specifically designed for RVs, installation is nice and easy.

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Karan Riley

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RV Trips & Travel

Advise to Keep you and your RV in Good shape

RV's · October 20, 2021

How Do I Know If My RV Water Heater Is Gas Or Electric?

Knowing whether your RV water heater is gas or electric is not only smart, but it can save you a lot of money. (Why run your heater on gas if it also is electric and you’re already hooked up at a site that provides electricity?)

Many water heaters with tanks these days are a hybrid gas/electric combination. You can find out if your RV water heater is gas or electric by checking the model number on the side of the system.

Because the model number can be difficult to decipher unless you know what you’re looking for, we’ve broken it down below. 

Deciphering Your RV Water Heater Model Number

Most RV water heaters with tanks are manufactured by Atwood or Suburban. Atwood also manufactures the brand Dometic.

If you have a tankless water heater, this article won’t be much help. Girard is the main manufacturer of tankless water heaters.

This article breaks down the various types of water heaters if you’re just starting out and trying to figure out which one to choose.

Below is the breakdown for both Atwood and Suburban RV water heater model numbers:

Keep in mind when looking at this table that these model numbers do not correspond to every letter or number listed in the rows below. Those example models are just that: examples.

Additional letter definitions are provided for when you do have them in front of you.

In these examples above, our Atwood water heater is strictly gas, while our Suburban water heater is a hybrid of both gas and electric.

Where to Find Your RV Water Heater Model Number

Typically, your RV water heater model number will be on the front or back of your heater. You should not need to remove your heater from your rig to view the model number – it should be visually accessible. 

Your RV water heater will typically be stored on the side of your rig, however, this can depend on the make and model of your rig. 

Differences Between Gas and Electric RV Water Heaters

The main difference between these two types of water heaters is the type of power being used to conduct heat and subsequently heat your water.

Gas/Propane-Only RV Water Heaters

This is the original type of RV water heater that is designed to run anywhere at any time. The beauty of this type of water heater is that you don’t need electricity to run it. So, if you’re camping out in an area where electricity is not accessible, a gas water heater may be the best choice for you.

These heaters work in a similar way to residential water heaters. A spark ignites a small gas flame that heats up the water in your water tank. A tiny bit of electricity from your battery is used to ignite and maintain the flame until your water is heated, however, this is negligible. 

Electric RV Water Heaters

Typically, electric RV water heaters are a combination of gas and electricity. This type of RV water heater can be especially beneficial if you are one that likes to both boondock (camp out in the middle of nowhere) and hook up at a local campground. 

These types of water heaters usually cost a bit more upfront than a gas/propane water heater, however, maintenance and upkeep costs tend to be the same.

Electric and gas hybrid water heaters can heat your water up much more quickly than a typical gas/propane RV water heater. This is because you can use the electric and gas elements at the same time. If you are only using the electric feature, your water will take longer to heat up than a gas RV water heater.

Electric water heaters will draw from your battery energy in order to run, so it’s usually best to be hooked up to an electric source when using your electric RV water heater. Many campgrounds have included electricity.

Final Thoughts

If you have a gas-powered RV water heater you can purchase kits online to convert it to both gas and electric — you don’t have to have one or the other, too, with a hybrid model!

You can easily figure out your model number and what it means using the table above. 

Remember to keep your water tank clean, and to drain your tank in the winter or when not traveling. You don’t want your lines to freeze or to have any mold grow up in there.

Happy traveling!

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All About RV Water Heater (9 Things You Should Know)

If you have used an RV for going on minimalistic road trips, you should know how the RV water heater works. People tend to have mixed reviews about this heater. However, you can’t deny its practicality. 

Unlike most similar appliances, RV water heaters are powered by propane. This gives it a unique setting in the form of a six-gallon to ten-gallon tank. While most of these tanks work only on propane, many also support electricity. 

So, did we catch your interest yet? In this article, we will be covering some of the most interesting nine facts about the RV water heater. So, whether you are cooking or taking a shower, you will know how to use them.

9 Things You Should Know About RV Water Heater

If you are going to use the water source included in the RV, you might have to face a lot of problems. In this section, we will be covering nine important facts that you might need to know when using the RV water heater.

Fact 1: Power Source of Water Heaters

Typical RV water heaters make use of three types of energy- electricity, propane, or heat from the engine. Most RVs commonly tend to use electricity as their main source of energy to heat up the water. 

Once the water has been heated up, the electricity is turned off to conserve energy for the future. While both propane and heat from the engine work in the same way, heat from the engine is the most economical option. 

Fact 2: There Are Two Main Manufacturers

If you are going to use RV water heaters, you are going to obtain yours from two main manufacturers. These are wood and suburban. Most RV brands acquire their heaters from these two manufacturers. 

Once acquired, they are authorized to install them in the RV so that you can use them later on. 

Fact 3: Tanks have a very limited size

Tanks come in sizes ranging from 6 to 10 gallons. This will depend on the unit that you buy. This is because RV makers tend to install tanks by the size proportion of the RV itself.

Fact 4: The Tanks are smaller than the ones used in homes

The water tanks that you get in your houses usually vary from 40 to 50 gallons. However, RVs have a more minimalistic setting that can only allow a compact 6 to 10-gallon tank capacity. 

Fact 5: An anode rod is needed to avoid corrosion.

If the heater of your RV water supply runs on electricity, it is highly prone to corrosion due to electron discharges. Using an anode rod sucks in the excess electrons so that they do not cause any corrosion on the tank.

Anode rods are relatively expensive, and most luxurious RVs even come packed with them beforehand.

Fact 6: Turn off  Propane heaters if you are going out

Let us say that you are going out for some time with your RV packed away in your garage. In these cases, we advise you to turn off your propane supply beforehand. 

Not only will this increase the life expectancy of your heater, but this should also help you not waste any propane when not in use. 

Fact 7: Warm Water Is Always Available

Unlike the ones that you use in your homes, RV water heaters are much quicker, providing a warm water supply as soon as possible. All you need to do is turn on the switch that activates the heater. 

Most people tend to keep the heater on at all times unless they are getting out of the RV. This is kept for the sake of convenience. 

Fact 8: Regular Maintenance is Needed

For best performance and longevity, it is advised that you run maintenance checks at regular intervals. Do note that once there are any specific problems with your RV water heater, it won’t be easy to repair. 

Although maintenance is no easy task, you should always consider paying as much attention as possible when running a diagnosis. 

Fact 9: Drain Water From Tanks

If you are not going to use your RV during the winter, you should drain all the water from the tank. If you do not drain your tanks, the heater valves might start freezing. This can be incredibly inconvenient later on.

Read Also:   What Size Socket Is The Best For Water Heater Element

Types of RV Water Heaters 

If you are going to consider the technical side of RV water heaters, there are three main categories that exist. Depending on the RV unit that you own, your water heater tank would be one of these three types.

Propane (LP) Only RF Water Heater

These are the oldest types of water tanks that run on propane gas to heat up the water in the tank. Propane works similarly to gas stoves by creating a small flame using sparks. The flame then heats up the tank. 

For this propane to work, it requires some activation energy from an external 12V power supply. This is typically drawn from the batteries. 

This is operated via a switch that also provides safety features such as not allowing gas flow when the system detects an ignition failure. 

Gas + Electric Water Heater

These types of heaters work on both gas and 120V electric supply or even on one of the two solos. RV water heaters included in this category tend to be much more expensive to both buy and maintain.

There are certain drawbacks to this system, which mainly include the fact that it takes some time to heat up the water tank. In addition, they will use a significant amount of power from the batteries, often causing any other appliances to lose power. 

Tankless RV Water Heater

A tankless water heater is a very modern invention that hasn’t been in use until a few. 

Tankless water heaters operate by heating up the water that moves within your pipes. This gives it the moniker of ‘heat from the engine. Not only is this process quite quick, but it also helps in preventing the water from running out. 

However, do note that these types of heaters are relatively very expensive and can also be sensitive to pressure changes. As such, frequent maintenance is advised for long-term usage.

Read Also:   How to Know Your RV Water Heater Switch On or Off?

How Does RV Tankless Water Heater Work?

The RV tankless water heater or RV-instant-hot-water-heaters can be very pricey. However, no one can deny its usefulness and how convenient it can be. 

Tankless water heaters work by automatically heating up the weather as soon as you turn up the water faucet. Rather than the conventional way of heating the water tank, tankless heaters heat up the water as it moves through the pipes. 

This makes the process incredibly quick and functional. Additionally, you can also set up the water temperatures quite conveniently by making use of control panels. 

Pros of Tankless Water Heater

• Does not waste any energy
• A virtually endless supply of hot water
• Occupies less space than most other tank heaters
• Doesn’t use much propane or electricity to run processes
• Very quick supply of hot water

Cons Of Tankless Water Heater

• Incredibly expensive
• Size may not fit into your RV

Read Also:   5 Common Reasons Why Your RV Water Heater Won’t Shut Off

How To Turn On An Electric Rv Water Heater?

If you’re going to use the electric water heater in your RV, you will need to follow the following procedure. While some deviations exist depending on the models, the general process has similar steps. 

Step 1: Preparations

The first step is the preparatory step that you will need to follow to ensure that the water runs smoothly. Run a visual inspection of the components and ensure that there is enough water in the tank. 

Step 2: Access Panel

Locate the access panel which is outside of your RV. Once you have located it, make sure to remove the cover.

Step 3: Switch Heater On

You will find the on and off switch inside the heater control panel. Turn on the heater by flipping the switch. This should activate your electric RV water heater.

Read Also: 8 Common Causes of a DSI Fault Light on RV Water Heater

RV Water Heater Maintenance Guide

There are several points that can be good to remember when running maintenance on the water heater. We have compiled some of the most common must-dos that you can follow. 

Regular Maintenance

It is advisable that you run regular maintenance on the water heart of your RV. This is because these heaters can be quite delicate and are especially prone to damage during weather changes.  

You can consult your manual for regular maintenance. In addition, you can also contact a mechanic to help you out. 

Flush Out The Water Twice A Year

You should flush out the water twice a year at the minimum to remove a buildup of minerals such as zinc, iron, and calcium. 

In addition, if you carry out the flushing during the winters, it will prepare the heater in the tank to survive through the winters without freezing. This should improve its overall performance while ensuring longevity. 

Check Heating Element

The heating element is the most important part of the entire heater. This is the reason why the heater is able to heat up the water in the first place. 

When cleaning the tanks, you should also clean up the heating element. Make sure that no dust or water droplets can accumulate since they can interfere with the heat transfer. 

Check The Vents

Another important component that is responsible for keeping the heater working is the vents. If the vents are clogged, air will not be able to pass properly, thus reducing the heating efficiency. 

That is why you should always clear away the vents whenever you’re running maintenance on the RV water heater.

Read Also:   RV Water Heater Anode Rod: Everything You Need To Know

By now, you might have a lot of questions and confusion in your mind. While we can’t provide answers to all of them, we will try our best to answer some of them.

What Is The Life Expectancy Of An RV Water Heater?

An RV water heater typically has a lifespan of 10 to 15 years. However, it can last for five more years if it is well taken after. 

Do All RV Hot Water Heaters Have An Anode?

No, not all water heaters in an RV have an anode. Generally, only the ones that run on electric energy have an anode rod. This is to prevent the charge from corroding the steel.

How Long Does It Take A 6 Gallon RV Water Heater To Heat Up?

A 6-gallon water tank should be fully heated in 58 minutes or less. However, do note that this is only a rough estimate which is not the most accurate.

How Do I Know If My Rv Water Heater Anode Is Bad?

You can know when your rod has gone bad when more than 75 percent of the total rod has dissolved in the water. Other signs may include when the steel tank starts showing signs of corrosion. 

How Much Propane Does A RV Water Heater Use?

For a 6-gallon of water rated at 10,000 BTUs, it would take about 20 pounds of propane to heat it. This is usually within a time frame of 42 minutes.

RVs are not only known to be appropriate for traveling, but they can also be your partner if you prefer a minimalistic nomadic lifestyle. The only catch is that you should always be prepared if something goes wrong. 

In addition, as well as you have made measures while running maintenance, you shouldn’t run into problems any time soon. Hopefully, this article has been able to help you out in making these countermeasures.

Read Also:   Common Jayco Water Heater Problems & Solutions

Zayan is an accomplished author and a go-to expert for all things RV and camper-related. With a passion for adventure and a knack for problem-solving, he has spent years exploring the open road and fine-tuning his knowledge of recreational vehicles.

Zayan’s writing is a testament to his expertise, offering readers practical solutions to common RV dilemmas. Whether it’s troubleshooting mechanical issues, optimizing space, or planning the perfect road trip, Zayan’s insightful advice and engaging storytelling make him an invaluable resource for both seasoned travelers and newcomers to the world of RVing.

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8 Best Water Heaters of 2024

Water heaters are about as essential to a functioning household as the doors, windows, and walls, and nothing makes life miserable quite like cold showers caused by a broken or subpar unit. Most water heaters use a 30-60 gallon tank while tankless models are increasingly common, and others still are a hybrid between the two. But no matter the type, you need one that delivers on your water demands, is convenient to use and maintain , and keeps your efficiency high and bills low .

Below you’ll find our picks for the best water heaters to suit different purposes. We chose the GE RealMAX Premium for our best overall slot because it’s a well-rounded product suited to a wide range of scenarios with a reputation for reliability. However, that doesn’t necessarily mean it’s right for you, so with that in mind, our recommendations for the best water heaters span a range for different needs.

Table of Contents

• Best Water Heaters
• Things To Consider When Buying
• How We Chose

GE RealMAX Premium 50-gallon Tall Water Heater  »

The best options for most homes

Renowned reliability

Somewhat large

No smart features

It should come as little surprise that GE took our best overall slot. The company has led in the field for decades with good reason. The water heaters work reliably, require little maintenance, and can easily last for decades. More likely than not, you grew up in a house that had one.

The company’s RealMAX Premium line is a good example of why GE has such a good reputation. Its 40,000 BTU burner heats water fast. A safety system shuts the unit off in the unlikely event of overheating. And an anode rod prevents corrosion and a robust 10-year warranty ensures peace of mind. It doesn’t have any smart, app-synchronized features, but that’s not an issue for most people.

While it’s available in several tank sizes, we’re recommending the 50-gallon, tall variety because that will dependably meet the water demands for just about any situation while having the smallest possible footprint. It’s still somewhat large, but if you have the space for it, it’s a reliable water heater.

A.O. Smith Signature 100 40-gallon Short Water Heater  »

Reliable performance

Double burner

Some buyers report inconsistent temperature settings

It isn’t easy to find a quality full-sized water heater for under $500, but A.O. Smith’s Signature 100 is one of the few. Its dual 4,500 BTU burners reheat water fast, and the temperature can be adjusted easily to suit different tasks. It’s intuitive to use and requires very little maintenance, typically functioning for years without issue, and an anode rod prevents corrosion. A few buyers have reported inconsistent temperature settings, but these cases seem to be few and far between. Here again, there are no smart features, but if you’re looking for a low-cost water heater you can count on, you don’t need such bells and whistles.

It’s available in a few formats, but we’re recommending the 40-gallon short version, which keeps the price down and makes it a great option for installation beneath stairs or other low spaces. That 40-gallon capacity is enough for a two- to three-person household, but if you have a larger family you may want to step up to the 50.

Rheem ProTerra 50-gallon Smart Water Heater  »

Superior efficiency

Tracks energy usage

App connected

Many features to learn

If you’re trying to squeeze the utmost efficiency out of your home, the ProTerra series from Rheem reduces your gas use by leveraging an electric heat pump to draw warm air from around the unit, aiding with heating. This makes it substantially more efficient, and the pump uses less power than a 100-watt light bulb. What’s more, you can track the efficiency in real-time via an app, which lets you also see how much hot water is remaining in the tank and set a vacation mode. A high-demand mode cranks up the burner when the situation calls for it.

Thanks to its ENERGY STAR certification, homeowners are eligible for tax credits up to $2,000. We recommend the 50-gallon version to keep the price down (it certainly isn’t cheap), but larger sizes are available if needed. With all its settings and apps, it is a relatively complicated water heater, but if greater sustainability is your goal, it’s worth the extra effort. Plus, it’s backed by a 10-year warranty.

Stiebel Eltron DHX 15-2 Tankless Water Heater  »

Very compact

Good flow rate for tankless

Highly efficient

Supports a limited number of fixtures

No app monitoring

There’s no better solution to limited space than going tankless, and the DHX 15-2 from Stiebel Eltron is about as good a tankless water heater as there is. While it’s very compact – roughly the size of a couple of shoeboxes –it produces instant hot water at the flick of the faucet, and it’s significantly more efficient than most tank options.

While it’s realistically not going to support more than two to three faucets at a time, it still has a much better flow rate than the majority of tankless models of comparable size, and its Advanced Flow Control ensures a balance between faucets when demand is high.

It’s also relatively easy to install and has a reputation for requiring little maintenance over time. It’s self-cleaning and limescale resistant so it won’t gunk up with use. There are no smart features, which is kind of surprising, but all-told, it’s an excellent way to fit hot water into a small space.

Rheem Performance 75-gallon Water Heater  »

Huge capacity

Moderate price

Great heating performance

If you have a family of five or more, you need to look upwards of 60 gallons if you want a water heater that you can depend on no matter how many people are showering at once. The Rheem Performance 75 provides the oversized capacity you need, and it does so at a surprisingly reasonable price. Beyond its large capacity, it also cranks out a whopping 76,000 BTUs to ensure that it has the power to actually heat all that water, which it does and then some.

It’s a fairly large, bulky unit, so it will take up more space than the average water heater. It doesn’t have any smart functions, though it does have all the safety features you would want for your family’s home. The durability is great, and you have the option of either a six or 12-year warranty. If you expect to provide hot water to many taps at once, this heater is up to the task.

Rheem Performance Platinum Super High-Efficiency Condensing Tankless Gas Water Heater  »

Outstanding tankless performance

High flow rate

App monitoring

Not for high water demands

The Rheem Performance Platinum line is considered by some as the best tankless water heater money can buy. With its flow rate of 8.4 gallons per minute, it’s one of the most powerful tankless models around, capable of reliably providing ample hot water for up to five faucets. It’s highly efficient, using roughly half the gas of a typical 50-gallon tank, and smart connectivity allows for easy monitoring and settings changes. The durability is excellent, with the vast majority of buyers reporting years of issue-free use, and the 15-year warranty is one of the best we’ve found.

You’re paying for its excellent performance, because it’s certainly not cheap. And keep in mind that like all tankless water heaters, it’s not really designed to provide a massive amount of water across a whole house. If you have a large house with more than four residents, you’ll likely want a smaller support unit under a bathroom sink to reduce the potential for water pressure to dip during showers or other high-water demand situations. But with that in mind, this tankless water heater outpaces the competition.

Bradford White AeroTherm Heat Pump Water Heater  »

Superior hybrid performance

Lightning-fast heating

Very expensive

Difficult to find

The Bradford White AeroTherm is so well designed it looks like something built for space travel. Its hybrid heat pump performance is almost unmatched, with the ability to heat its massive 80-gallon capacity to 90 degrees in just 15 minutes. That’s more than enough for a family or house of any size. Several modes allow you to tailor its performance to your needs, and a vacation mode keeps things chill (but not frozen) while you’re away. The durability seems to be good over time, and the availability of a 10-year warranty is nice. By every metric, this is a superior hybrid water heater.

That being said, it’s not exactly easy to get. It’s extremely expensive, and flat-out difficult to buy. Not sold in or shipped to several states, for many the only way to get it is to physically drive to a provider in another region and then transport it back home themselves. But if you’re truly looking for the best hybrid water heater around, this is it, so it might be worth the extra effort.

EcoHome SmartHome 6.8 GPM Indoor Natural Gas Tankless Water Heater  »

Full smart home integration

Modest flow rate

Lots of settings to learn

While there are a lot of water heaters that offer a limited range of smart functions, few offer full smart home integration. With the EcoHome SmartHome Tankless Water Heater, however, you get full voice command integration as it connects with Amazon Alexa and Google Home. That means you can adjust any of its settings by speaking, and can even tell it to heat your bath to a specific temperature.

It also syncs to an app that allows you to monitor operation and efficiency, and for such a tech-savvy unit, it’s surprisingly affordable. What’s more, the tankless design makes it easy to install in any space.

Its biggest drawback is the 6.8 GPM flow rate, which is perfect for an apartment or small house, but won’t quite cut it for a full house with more than one bathroom. If that’s your situation, you can bolster its operation by installing a second smaller tankless unit somewhere in the house.

It’s also pretty heavy on settings to learn, so the less tech-inclined might find it tricky. But the features should come as no surprise considering how seamlessly it integrates into a smart home system.

The Bottom Line

Our research determined that a water heater can be as tech-heavy or light as you want it to be. But most homeowners are looking for a straightforward model they can install and more or less forget, which is why the GE RealMAX Premium took our top spot. Others want appliances that will integrate into their smart home ecosystem or offer especially high efficiency, and we’ve included those too.

Things To Consider When Buying Water Heaters

Capacity: According to Brandon Walker, a 20-year veteran of the home contracting industry, no other consideration is as essential as capacity. If the capacity is too low in relation to your household water demands, it’ll run out of hot water partway through someone’s shower. If the capacity is too high in relation to the BTUs, it will take forever to heat.

Typically speaking, a household of under four people can get away with a 40- to 50-gallon tank. With four or five people you’ll want to lean toward 50 to 60 gallons. Upwards of five people, and you should consider getting an oversized tank of 75, 80, or even 90 gallons.

Fuel Type: Nearly all water heaters run on natural gas by connecting to your home gas line, though depending on where you live, propane may be more available, and some heaters run on that too. Some run entirely on electricity. Hybrid models typically use a combination of gas and an electric heat pump, allowing them to use less fuel and oftentimes heat significantly faster than gas-only units.

In theory, hybrid heaters are the better option thanks to their improved performance and efficiency, but they also tend to be much more expensive than gas-only models.

Longevity and Durability: Water heaters are not only expensive, but having them break down can put a serious damper on your day, or even week, depending on how long it takes for repair or replacement. A quality water heater should last for six to 10 years without any serious maintenance, and its lifespan should be at least 10 to 15 years. It’s impossible to tell the durability of a particular model just by looking at it, so consider a brand’s reputation for longevity.

Warranty: A water heater is an investment that you need to protect. Never buy a model that only offers a warranty of one to two years. If a manufacturer doesn’t have confidence that their product will hold up at least that long, you shouldn’t either. Most reputable brands offer warranties of at least six years, but oftentimes you can find them for 10, 12, or even 15.

Your Home: According to Walker, you need to make sure you’re getting the appropriate unit for your home. “This can mean a variety of different things,” he explains, “from getting a unit with the proper voltage for your electrical supply [to] getting one with enough capacity to provide for your entire home. Do calculations and make sure of everything before you purchase and attempt an install. This means knowing how much water you will need, the energy requirements, and the space requirements.”

How We Chose the Best Water Heaters

At U.S. News 360 Reviews, we understand the importance of being comfortable in your own home, and few things can impact that like quality appliances – especially those that ensure hot showers. To select the best water heaters, we spoke with expert Brandon Walker, who has spent 20 years building homes and is the Construction Manager at ASAP Restoration .

We then researched the top brands and models across a range of price points, water demands, and household situations. We also checked our findings against the reviews of buyers on outlets like Home Depot and Amazon, and with all this in mind, select the best water heaters for a variety of scenarios.

WHY SHOULD YOU TRUST US?

Nick Hilden , the author of this piece, has been researching and reviewing home appliances for top consumer publications for over a decade. A home DIY project enthusiast himself, he’s previously reviewed a variety of home improvement products for U.S. News 360 reviews, such as the best above-ground pools , sump pumps , and water filtration systems .

David Dritsas also has extensive experience with online commerce, DIY topics, and home improvement. He’s spent more than 20 years curating buyer’s guides and more for online shoppers looking to find the best products for their money.

That depends entirely on the brand quality, but you should expect a new water heater to last at least 10 years, and maybe as many as 15. Tankless water heaters can last even longer, between 15 and 20 years. The key to making your water heater last (besides buying a good one in the first place) involves performing regular maintenance and making repairs promptly if the need arises.

Tankless water heaters, also known as “point of use” or “on demand” water heaters, work by superheating water instantly via a gas burner as water passes through it. There are several benefits to going tankless, such as saving space, reduced need for maintenance, and greater control over water temperature. Their primary drawback involves their typically lower flow rate.

Water heaters should be flushed at least once a year to remove sediment that builds up over time which may impede function. Beyond that, maintenance typically involves checking for unusual noises, leaks, or fluctuations in temperature. If you live in a place where the temperature may drop below freezing in the winter, you should insulate your pipes and heater faucet each year before it gets cold.

About Our Team

Nick Hilden

Contributor

David Dritsas

Editor, Home Goods

U.S. News 360 Reviews takes an unbiased approach to our recommendations. When you use our links to buy products, we may earn a commission but that in no way affects our editorial independence.

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How to Turn Up Hot Water Heater

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Water heaters are familiar fixtures in most homes because the water coming into your home makes a journey through a system of pipes, and it's usually cold or cool, depending on the time of year. To have water warm enough to take a shower or bath or wash clothes, you need a water heater.

If your water heater's temperature is off, you'll want to learn how it works, including how to turn up your hot water heater .

Modern Hot Water Heaters

Inside a water heater, heating the water, tankless and alternative water heaters.

Hot water heaters typically look like big metal cylinders and they're often confined to a utility room or basement. Newer styles have some interesting features, like tankless water heaters that provide endless hot water on demand.

But the old, reliable water heater design that's most widely used in the U.S. today is really a pretty simple appliance: It's basically a drum filled with water and equipped with a heating mechanism on the bottom or inside.

Common energy sources for heating up water include electricity, burner oil and natural gas. Some modern applications have also moved to solar and geothermal heat for increased efficiency.

What makes water heaters interesting is that they exploit the principle that heat rises to deliver hot water right to your faucet with minimum fuss.

Don't let the simple shape shrouded in its wooly insulating blanket fool you. Water heaters have an ingenious design on the inside for something that looks so ordinary on the outside.

Let's take a quick look at the inner components that work together in your water heater to make your morning shower so satisfying.

• Tank : The inner shell of a water heater is a heavy metal tank containing a water-protective liner that holds 40 to 60 gallons (151 to 227 liters) of hot water at around 50 to 100 pounds per square inch (PSI), within the pressure range of a typical residential water system . The exterior of the tank is covered in an insulating material like polyurethane foam. Over that, there's a decorative outer shell and possibly an additional insulating blanket.
• Dip tube : Water enters the water heater through the dip tube at the top of the tank and travels to the tank bottom where it's then heated.
• Shutoff valve : The shutoff valve stops water from flowing into the water heater. It's a separate component from the heater located outside and above the unit.
• Heat-out pipe : Suspended toward the top of the tank's interior, the heat-out pipe allows the hot water to exit the water heater.
• Thermostat : This is a thermometer- and temperature-control device. Some electric water heaters have a separate thermostat for each element. You can change the water heater temperature by adjusting the thermostat.
• Heating mechanism : Electric water heaters have heating elements inside the tank to heat the water. A gas water heater uses a burner and chimney system instead.
• Drain valve : Located near the bottom of the exterior housing, the drain valve makes it easy to empty the tank to replace the elements, remove sediment or move the tank to another location.
• Pressure relief valve : This safety device keeps the pressure inside the water heater within safe limits.
• Sacrificial anode rod : Made of magnesium or aluminum with a steel core, the sacrificial anode rod is suspended in the water heater tank to help retard corrosion.

If your electric water heater is taking longer to bring water to temperature than it used to, the bottom heating element inside the tank may have burned out. It may also be time to use your tank's drain valve to remove accumulated sediment.

Let's take a close-up look at what's going on inside a water heater's tank to see how it does its job.

A water heater's thermostat controls the temperature of the water inside the tank. Normally, you can set the temperature anywhere between 120 and 180 degrees Fahrenheit (49 to 82 degrees Celsius).

The water temperature setting recommended by most manufacturers is between 120 to 140 degrees Fahrenheit (49 to 60 degrees Celsius). This is hot enough to be sufficient for household use, but not hot enough that it can pose a scalding risk.

Benefits of Lower Temperature Limits

If there are children living in your home, it's wise to stay closer to the lower end of the range.

Setting your water heater to a lower temperature saves energy, too, and if you remember to dial back the heat when you go on vacation, you'll experience even more energy savings.

Usually, the thermostat is located underneath a protective cover plate and has a knob or dial you can turn to set the desired temperature.

How a Water Heater Heats Water

The dip tube feeds cold water from your home's water lines to the bottom of the tank's interior, where the water starts to warm up. The heating mechanism — either a burner or an element — stays on until the water reaches temperature.

As the water heats, it rises to the top of the tank. The heat-out pipe is located near the top of the tank. Water exiting the water heater at the top is always the hottest in the tank at any given moment because it's the nature of hot water to rise above denser, cold water.

The secret to a water heater's design for separating cold, incoming water from hot, outgoing water is that it relies on the principle that heat rises to do the hard part. The position of the heat-out pipe at the top of the tank does the rest.

Hot Water Heater Maintenance

Home improvement experts recommend performing preventative maintenance annually on tank-style water heaters, which a professional technician can help you with. Components such as the pressure release valve and anode rod should be inspected to ensure effective operation.

Over time, the tank can also fill up with natural sediment and minerals from your water source. These contaminants clump together at the bottom of the heater, reducing its efficiency and potentially shortening the service life of the system.

To stop this from happening, the technician can drain the tank and flush out any collected sediment.

Although tank-style water heaters are still very popular, especially in the U.S., tankless water heaters are gaining in popularity.

Where a tank-style water heater continuously heats the water to make it available when you need it, a tankless system creates hot water on demand. Tankless heaters sit idle most of the time and are automatically switched on whenever hot water is needed.

Advantages and Disadvantages of Tankless Water Heaters

Tankless water heaters provide fewer gallons-per-minute of hot water than typical heaters and can take a while to warm up. However, they also use nearly zero energy when hot water is not needed.

By comparison, the traditional system will keep switching itself on to maintain the heat in its tank, even when no one is home.

Although this can mean big energy savings, a tankless system can initially cost up to three times as much as a standard water heater setup. Multiple water heaters will also likely be required to effectively provide hot water for multiple bathrooms and appliances.

On the other hand, energy savings will go back into your pocket in the long run, and there are often incentives like tax rebates that go toward the installation of high-efficiency heaters.

Other Types of Water Heaters

Other types of efficient heaters are used in more niche applications, such as solar heating systems. These use a series of water-filled pipes installed along the roof of a building.

These pipes collect the natural heat of the sun and then transfer the hot water into an insulated collection tank using pumps or gravity flow. In the process, the system uses very little energy, but it requires a warm, sunny climate and a lot of roof space.

There are drawbacks, as cold weather can cut off the whole hot water supply. It also takes a long time to replenish the storage tank if it is drained completely. Many solar water heaters will also include an electrical or gas heating method as a backup, which helps mitigate the disadvantages.

Geothermal water heaters work similarly to their solar counterparts but instead use pipes buried underground. In areas of volcanic activity, geothermal heaters can take advantage of the reliable and practically infinite heat that radiates from the Earth's core.

Water Heater FAQ

How do you turn up a hot water heater, is a tankless water heater worth it, are electric water heaters good, can a homeowner install a water heater themselves, which is better: a regular water heater or a tankless water heater, lots more information, related articles.

• How Tankless Water Heaters Work
• How Hybrid Water Heaters Will Work
• How Home Thermostats Work
• How Water Towers Work
• APEC. "Water Pressure Explained." (June 14, 2011). http://www.freedrinkingwater.com/water-education3/8-water-pressure.htm
• Vila, Bob. Franco, Micheal. Carrick, Tony. "Which Type of Water Heater is Best for Your Home?" Bob Vila. (June 28, 2022) https://www.bobvila.com/articles/types-of-water-heaters/
• Energy Star. "Equipment Tax Credits for Primary Residences" (June 28, 2022) https://www.energystar.gov/about/federal_tax_credits/non_business_energy_property_tax_credits
• Klenck, Thomas. "How It Works: Water Heater." Popular Mechanics. (June 14, 2011). http://www.popularmechanics.com/home/improvement/interior/1275141
• Marques, Lance. "Water Heater Maintenance Tips" This Old House. (June 28, 2022) https://www.thisoldhouse.com/plumbing/21016402/how-to-maintain-a-water-heater
• Novate Media."Tankless Hot Water. (June 14, 2011). http://www.novativemedia.com/green-articles/tankless_water_heater.php
• U.S. Department of Energy. "Selecting a New Water Heater" (June 28, 2022) https://www.energy.gov/energysaver/selecting-new-water-heater
• U.S. Department of Energy. "Solar Water Heaters" (June 28, 2022) https://www.energy.gov/energysaver/solar-water-heaters
• U.S. Department of Energy. "Storage Water Heaters." (June 28, 2022) https://www.energy.gov/energysaver/storage-water-heaters
• U.S Department of Energy. "Tankless or Demand-Type Water Heaters." (June 28, 2022) https://www.energy.gov/energysaver/tankless-or-demand-type-water-heaters
• U.S. Department of Energy. "Heat Pump Water Heaters." (June 28, 2022). https://www.energy.gov/energysaver/heat-pump-water-heaters
• U.S. Energy Information Administration. "Geothermal Explained" (June 28, 2022) https://www.eia.gov/energyexplained/geothermal
• University of Georgia Cooperative Extension and the U.S. Department of Agriculture. "Choosing a New Water Heater." July 2006. (June 14, 2011) https://www.fcs.uga.edu/docs/Energy_Water_Heater_HACE-E-60-06.pdf

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The best RV tankless water heater in 2024

Autoblog may receive a share from purchases made via links on this page. Pricing and availability are subject to change.

Glamping in an RV can completely change a person's experience of the great outdoors. RVs provide plenty of creature comforts that you just can't get with a traditional tent setup, not the least of which is running water. While most RVs have water tanks, you'll likely have to do a bit more accessorizing if you want to heat that water up enough to do something like shower. An RV tankless water heater can do exactly that. There are plenty of options out there, so we've wrangled up some of the most popular and accessible heaters in this list below.

RecPro RV Tankless Water Heater - $429.95 (14% off)

Key features.

• Provides instant hot water with no wait
• Features a forced exhaust structure and dust net to keep the air clean as it moves through the tankless water heater
• Utilizes low water pressure startup
• Heated with propane
• "Flame Out Protection" automatically turns off the unit if the flame gets snuffed out
• "Water & Gas Linkage Control" turns off the heat if you run out of water, so you don't use up all your propane or damage the heater
• "Frost Protection" automatically heats the water if the temperature is 43°F or less
• Temperature range from 95°F - 123°F
• Applicable water pressure from 14.5 PSI - 116 PSI

The RecPro option has lots of great features such as a forced exhaust structure and dust net for keeping the air clean as it moves through the heater, low water pressure startup, "flame out protection" and more. It'll even automatically turn off the heat if you run out of water so you don't use up your propane or damage the heater. This unit can provide heat from 95°F - 123°F with water pressure from 14.5 PSI - 116 PSI.

Camplux Tankless Water Heater - $292.12

• 2.64 GPM (Gallons Per Minute) of instant hot water are produced
• Only heats the water when it's being used - no need for preheating
• 6-in-1 multiple protection includes flame-out protection, anti-freezing protection, over-heating protection, air flow pressure switch protection and more
• Utilizes an electronic ignition system and plugs into a standard 120V outlet
• Compact design made for saving space
• Features a digital temperature display
• Camplux offers 24 hour customer service

This Camplux heater provides 2.64 gallons per minute of hot water. Like all tankless water heaters, there's no need for the water to pre-heat, which means it provides instant hot water whenever you need. This one features six types of protection including flame-out protection, anti-freeze protection, over-heating protection and more. It even has a digital temperature display built right in!

FOGATTI RV Tankless Water Heater - $599.99 (28% off)

• Features a high altitude suitability mode, providing usability as high as 9,800 feet
• Staged combustion technology prevents water from getting too hot in the summer and saves on propane
• Produces 2.9 GPM (Gallons Per Minute) of hot water. The supply of hot water lasts over 20 minutes
• Includes a built-in pressure release valve
• Features a wired (2 meters) remote controller
• CSA certified with multiple protection features: built-in forced exhaust fan, stable combustion, automatic gas shut-off and anti-freeze

If you're looking for an RV water heater that'll stay consistent in high altitudes, this Fogatti option is worth a look. It provides usability as high as 9,800 feet. It also features staged combustion technology to prevent water from getting too hot in warm days and will also save you propane. It produces 2.9 gallons per minute of hot water, has a built-in pressure release valve and even features a (wired) remote controller.

Furrion 2.4GPM Tankless RV Gas Water Heater - $650.00

• 2.4 GPM (Gallons Per Minute) capacity
• Delivers hot water on demand "even when the ambient temperature drop to 32°F"
• Built-in sensors automatically turn the heater off if the water temp goes above a safe limit
• " Specially designed for retrofit applications and use(d) as a replacement door for Suburban 4/6 Gallon Water Heater models. This door fits the required dimension of 16.14-inches x 16.14-inches"
• Utilizes Furrion VibrationSmart technology to be able to withstand vibrations caused by rocky or uneven terrain
• Covered by Furrion's 2-year warranty

If you're planning an extra rugged trip, this Furrion tankless water heater is worth a look. It features VibrationSmart tech to help it withstand vibrations caused by rough terrain. It has a 2.4 gallon per minute capacity, can deliver hot water even when the ambient temperature reaches freezing (32°F), and it's specifically designed for retrofit applications and can be used as a replacement door for Suburban 4/6 gallon water heater models. The best part? It's covered by a 2 year manufacturer warranty.

Girard RV Tankless Hot Water Heater - $479.99

• Features an onboard microprocessor to control things like flow rate and outgoing hot water temperature to keep it consistent
• Consumes half the propane gas that a six-gallon tank water heater would 
• Includes a digital user control panel that allows the user to adjust the temperature from 95°F to 124°F and displays error codes
• This water heater "fits in any tank water heater cut-out opening and weights 32 lbs"

The Girard water heater could be a great choice if you're trying to save on propane. This model consumes only about half the propane than a six-gallon tank water heater would. The onboard microprocessor helps to control things like flow rate and outgoing hot water temp and it also has a digital control panel that allows the user to adjust the water temperature from 95°F to 124°F. It also displays error codes if there's ever an issue.

What is an RV tankless water heater?

An RV tankless water heater is just like it sounds. Rather than heating water in a tank, tankless water heaters heat the water instantly as it's moving through the system so no tank is needed. In theory, this system can offer an unlimited supply of hot water (or, at least, it can heat as much water as you have available in your RV).

Why do you need a tankless water heater?

While it's certainly not a necessity to have a hot water heater for an RV, it can definitely make your trips a lot more pleasant. Sure, it's possible to shower with cold water, but it's certainly not fun. As for what makes a tankless water heater more desirable than a traditional heater, the big benefit is that they're often smaller than traditional heaters, which is extremely helpful in a space as compact as an RV. Also, as mentioned above, they heat water instantly rather than requiring the user to wait for a tank of water to heat up.

How does a tankless water heater work?

Water is heated on its way through the pipes of the heater, rather than in a large tank like a traditional water heater.

How do you use a tankless water heater?

First, you'll need to get it installed. How do you install a tankless water heater? Well, unfortunately it can vary depending on the heater. If you're uncomfortable doing this yourself, we recommend speaking to a mechanic familiar with tankless water heating systems.

Pros and cons of using a tankless water heater?

Of course the biggest pro of using a tankless water heater is that you'll have hot water on your excursions! Going the tankless route ensures an "unlimited" and instant supply. However, tankless water heaters can be expensive and a pain to install, so you'll have to weigh the convenience against your budget and your comfort level with moderate-lift DIY projects. 

How much is a tankless water heater?

As you can probably tell from our selections, you'll be able to find water heaters available in a wide range of price options. In general, you can probably find one anywhere from $100 for a budget option to $1,200+ for something a bit more high-end.

See our other guides to the best RV products 

• Best RV covers
• Best RV battery options
• Best RV roof sealants 
• Best solar panels for an RV
• Best RV generator options
• Best RV mattress options

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The best RV tankless water heater in 2024 originally appeared on Autoblog on Tue, 23 Jan 2024 10:20:00 EST. Please see our terms for use of feeds .

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Electric Tank Water Heater-8 Gallon Under Sink Instant Hot Water for RV, Camper, Kitchen, Food Truck, 120V 1500W, Wall or Floor Mounted

Purchase options and add-ons

About this item.

• [Instant Hot Water & Rapid Reheat] Feelrogast electric mini tank water heater rapidly heats water, minimizing your wait time and efficiently meeting your hot water needs. The 316 stainless steel heating element achieves up to 99% heat utilization. Temperature is adjustable from 86-167°F for simple, convenient operation.
• [High quality and durability] This product is CE, ROHS, and FCC certified, ensuring safety and reliability. The 1.88mm thick stainless steel tank is pressure-resistant and explosion-proof, with a 500-800μm enameled layer using a unique double process to prevent cracking, rusting, and leaks, for long-lasting performance.
• [Safety Protection] Electrical insulation on inlet/outlet. Leakage protection plug. High-quality insulation. High-temp limiting device and auto temperature control. Multiple layers of protection for safety.
• [Convenient Installation] Wall-mount, rack, or floor options, with hidden install. 1/2" NPT water connectors. 110/120V, 1440W. Max 109 PSI pressure. 59-inch power cord with plug. Use 15-amp breaker for electrical safety.
• [Compact and versatile design] The streamlined design allows efficient space-saving, enabling under-sink installation. Highly suitable for RVs, camping, and other locations needing hot water supply, like kitchens, bathrooms, garages, food trucks, offices, and salons.

Product Description

Why Choose Feelrogast Electric Tank Water Heater?

Safety guaranteed.

• Leakage protection: Inlet and outlet electric shock protection
• IPX4 waterproof: Protection Against Splashing Water
• FCC & CE & ROHS certified

Reliable Durability

• Built-in magnesium rods: Protect the tank from rust and corrosion.
• Metal hose and 316 stainless steel heating tube: Ensure high thermal efficiency and resist wear over time.
• Dual porcelain enamel coating: Enamel coating adds protection against cracking and extends tank lifespan.

Product Features:

• Rated Current: 12.5A
• Rated Voltage: 110V-120V
• Rated Power: 1500W
• Temperature Range: 86℉-167℉
• Power Cord Length: 59″
• Water Pipe Length: 39.3″

Easily Mounted & Space Saving

Product information

Technical details, additional information, warranty & support, looking for specific info, important information, customer reviews.

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Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.

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Waiting for hot water to warm up can be frustrating. You turn on the tap, eager for a hot shower or to wash dishes, but you end up wasting time and water. This common problem affects many households. Your solution could be an instant hot water system. Make sure to check out our list of the best Instant Hot Water System !

Instant hot water systems offer a solution. These devices heat water on demand , providing hot water immediately when you need it. They’re compact, energy-efficient , and can save time and money.

This article provides information about instant hot water systems. We’ll cover the types available, their benefits, and key factors to consider when choosing one. You’ll have the information to pick the right system for your home by the end.

Are you interested in eliminating cold showers?

Benefits of an Instant Hot Water System

Instant hot water systems offer quick comfort and save energy. They heat water on demand, reducing waste and cutting utility bills.

Immediate hot water access

Instant hot water systems provide hot water right when you need it. These systems heat water as it flows through, giving you endless hot water . You don’t have to wait for a tank to heat up.

This saves time and cuts energy waste from keeping a big tank hot all day.

Electric and gas models offer quick hot water access. They work well in homes, apartments, and businesses. Users enjoy hot showers without running out of hot water. These systems also take up less space than traditional water heaters.

Energy efficiency

Instant hot water systems save energy by heating water only when needed. They also eliminate standby heat loss from storage tanks, which means lower utility bills and less energy waste. Electric tankless heaters, backed by ENERGY STAR , are especially efficient.

They use power only during active use, reducing overall energy demand.

These systems also help the environment. By lowering energy use, they decrease greenhouse gas emissions , making them a smart choice for eco-conscious homeowners. The energy savings add up over time, making instant hot water systems a wise investment for wallets and the planet.

Space-saving design

Instant hot water systems save space in homes and buildings. These compact units don’t need large storage tanks, freeing up room for other uses. You can install them in tight spots like closets or under sinks.

Their small size makes them perfect for apartments, tiny houses, or any place where space matters.

These systems hang on walls or fit in small cabinets. They heat water as needed, so no bulky tank is required. This design allows for more flexible placement options , and you gain extra floor space and storage areas in your home.

The sleek look of these units also adds a modern touch to any room.

Types of Instant Hot Water System

Instant hot water systems come in three main types. Each type offers unique benefits for different home setups and user needs.

Electric Tankless Water Heaters

Electric tankless water heaters offer on-demand hot water without a storage tank. These units heat water as it flows through using electric coils, saving space and energy compared to traditional tanks.

Airthereal makes several models, ranging from 8 kW to 27 kW. Prices start at $159.99 for the 8-kW version and go up to $299.99 for the 27-kW model .

These heaters work well for homes with 240-volt electrical systems. The right size depends on how much hot water you need at once. Larger units can handle multiple faucets or appliances at the same time.

Electric tankless heaters are easy to install and maintain. They also last longer than tank-style water heaters.

Gas Tankless Water Heaters

Gas tankless water heaters offer on-demand hot water without a storage tank. These units heat water as it flows through, using natural gas or propane. They save space and can be more energy-efficient than traditional tanks.

But there’s a catch. These heaters emit twice as much unburnt methane as standard gas storage models. This matters because methane has 86 times more warming power than carbon dioxide over 20 years.

Despite their benefits, gas tankless heaters make up only 2% of U.S. gas water heater sales. Their higher upfront cost and installation needs may slow adoption. Users must also consider flow rate needs and gas line capacity.

While they can cut energy use, their methane emissions raise questions about their environmental impact.

Point of Use Water Heaters

Point-of-use (POU) water heaters offer quick hot water access right where you need it. These compact units fit under sinks or in closets near fixtures. POU heaters store 2.5 to 20 gallons of water and heat it on demand.

According to the U.S. Department of Energy , they cut energy use by up to 50% at each outlet.

POU systems cost $400 to $800 to install. They last 10-15 years for tank models and up to 25 years for tankless versions. These units save space and energy while giving instant hot water.

For homes with spread-out fixtures, POU heaters offer a smart solution.

Key Considerations When Choosing a System

Choosing the right instant hot water system depends on your needs and home setup. Learn about flow rates , energy sources, and installation requirements to make the best choice.

Flow rate needs

Flow rate is key when picking an instant hot water system . It measures how much hot water the unit can provide at once. Most homes need 2-5 gallons per minute (GPM). Showers use about 2.1 GPM, while dishwashers need 1.5 GPM.

Gas units offer higher flow rate s, up to 5 GPM, than electric models at 2-5 GPM.

Your home’s size and habits affect flow rate needs. Large families or homes with multiple bathrooms require higher GPM. Consider peak usage times , like mornings when several people shower.

Match the system’s flow rate to your household’s demands for the best performance.

Energy source availability

Energy source availability is key in choosing an instant hot water system. Your home’s current setup affects your options. Homes with natural gas lines can use gas-powered units.

These often heat water faster than electric models . Homes without gas access may need to stick with electric systems. Some areas offer propane as an alternative fuel source .

Cost and efficiency matter, too. Electric units are often cheaper upfront but may cost more to run. Gas systems can be pricier to install but usually have lower operating costs. Solar-powered options work well in sunny climates and can save money in the long term.

Fuel oil and geothermal energy are less common but might suit certain homes. Pick a system that matches your home’s energy sources and budget needs.

Installation requirements

Installing instant hot water systems needs care and skill. A qualified contractor should handle the job to meet local codes and safety rules. They’ll check your home’s power supply, water pressure, and venting needs.

Proper ventilation is key to removing exhaust gases from gas units. Electric models may need upgraded wiring to handle the high-power draw.

The installer will also pick the right spot for your unit. It should be close to where you use hot water most, reducing wait times and heat loss. They’ll connect water lines, install shut-off valves, and set up the control panel.

Regular upkeep based on the manual helps keep your system running well for years.

Instant hot water systems offer comfort and savings. They heat water on demand, cutting energy use and costs . These compact units fit in small spaces, making them great for any home.

Choose the right system based on your needs and energy source. With proper care, these systems provide years of reliable hot water service.

1. What is an instant hot water system?

An instant hot water system, a tankless water heater, heats water on demand without storing it. It uses a heat exchanger to warm water quickly as it flows through the unit.

2. How do electric instant water heaters work?

Electric instant water heaters use heating elements to warm water rapidly. When you turn on a hot water tap, cold water enters the unit and is heated instantly by electric coils.

3. Is an instant hot water system energy-efficient?

Yes, instant hot water systems are energy-efficient. They only heat water when needed, reducing energy waste. This can lead to lower energy bills compared to traditional storage water heaters.

4. Can instant water heaters supply enough hot water for a whole house?

Larger instant water heaters can supply hot water for an entire home. The key is choosing a unit with enough British Thermal Units (BTUs) to meet your household’s peak demand.

5. Does an instant hot water system require special installation?

Installing an instant hot water system often requires a professional plumber. Depending on the model, these units may need upgraded electrical circuits or gas lines.

6. How does an instant hot water system differ from whole-house systems?

An instant hot water system is a small unit typically installed under a sink. It provides hot water for drinking or cooking. Whole-house systems heat water for all fixtures, including showers and clothes washers.

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