Top 10 Best RV Tankless Water Heater In 2019 Reviews & Buying Guide

If you’re an avid RV traveler, you know it’s a tough choice to find the best RV tankless water heater.

You need one that’s not only energy-efficient, but also safe, durable, and affordable. Thankfully, there are plenty of options that will help you find the tankless water heater for your RV without causing a headache.

In this article, we’ll talk about each tankless water heater available. You’ll be able to compare based on your plans and find one that’s perfect for your next trip. Whatever your specific needs are, we will help you find the top tankless water heater for your RV to suit them.

 Tankless Water Heater

Top 10 Best RV Tankless Water Heater On The Marrket 2019 Reviews

NamePower SourceHeightWeightRating
Power Source
Propane
Height
26 inches
Weight
61.7 pounds
4.7 out of 5 stars (4.7 / 5)
Power Source
Natural Gas

Electric
Height
21 inches
Weight
21 pounds
4.7 out of 5 stars (4.7 / 5)
Power Source
Propane

Electric
Height
14.25 inches
Weight
32 pounds
4 out of 5 stars (4 / 5)
Power Source
Propane
Height
20.3 inches
Weight
38 pounds
4.3 out of 5 stars (4.3 / 5)
Power Source
Electric
Height
26 inches
Weight
27 pounds
3.5 out of 5 stars (3.5 / 5)
Power Source
Electric
Height
22.5 inches
Weight
21.2 pounds
3.9 out of 5 stars (3.9 / 5)
Power Source
Natural Gas
Height
17 inches
Weight
14 pounds
4.4 out of 5 stars (4.4 / 5)
Power Source
Propane
Height
26 inches
Weight
28 pounds
4.7 out of 5 stars (4.7 / 5)
Power Source
Propane
Height
17 inches
Weight
14 pounds
3.5 out of 5 stars (3.5 / 5)
Power Source
Propane
Height
14.8 inches
Weight
14 pounds
3.6 out of 5 stars (3.6 / 5)

1 Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater

When you’re looking for a water heater for your RV, it’s a good idea to make sure that it is energy efficient.

Why?

Because not only is it better for the environment, it also saves you money. You don’t want to be wasting water and power that will drive your expenses up.

The Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater has Energy Star certification. It uses 120 volts with a flow rate of 9.8 GPM.

What does this mean?

It means that you are running hot water to your RV without leaving a massive carbon footprint or driving up your own costs.

That’s just one reason why plenty of people call this the best RV tankless water heater. It may be a bigger investment than some, but it makes up for it with quality and durability.

It also is designed to take up as little space as possible. This is perfect, since it is installed inside your RV. It might be small, but that doesn’t mean it isn’t powerful.

The Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater comes with a controller to let you make easy adjustments. It also promises super low NOx emissions, keeping you and your family safe in your RV.

If you’re willing to make a slightly bigger investment for a tankless water heater that last, this one may be a good choice for you. Its features put it at the forefront for tankless water heaters.

Pros
  • The water heater is energy-efficient and cost-effective.
  • It is compact and easy to fit inside an RV.
  • It is installed inside the RV for easy reach and repair.
Cons
  • It is a larger initial investment than some water heaters.

2 RV Atwood 6 Gallon Gas/Electric GC6AA-10E Water Heater DSI

The RV Atwood 6 Gallon Gas/Electric GC6AA-10E Water Heater DSI is a great choice for a mid-range priced water heater that still works well and lasts for years.

It comes completely equipped with direct spark ignition, a temperature gauge, and a door for easy repair.

But that’s not all.

It’s known as one of the best water heaters for more reasons than one. With an input of 8,800 BTU or 1400 watts, it is a high-performing heater that is made to last a long time.

The outside is made of aluminum, which offers extra protection from rust and damage without the need for extra parts.

What’s the best part?

The RV Atwood 6 Gallon Gas/Electric GC6AA-10E Water Heater DSI’s door isn’t just for aesthetic purposes. It makes repairs and replacements super easy. In fact, almost any repairs can be made through this door.

That also means that if you need a professional repair job, repairmen can access the heater from outside. You get an easy repair job without sacrificing any privacy.

The water heater also has a full range of gauges to help keep you safe. These include a high temperature limit switch as well as temperature adjustment and pressure relief.

And that’s not all.

It also comes with different capacity options for gas and electric power. Whatever power source you’re using, you can make adjustments for the best usage and power levels.

It’s options like these that land the Atwood solidly at the top of the list for RV water heaters.

RV Atwood 6 Gallon Gas/Electric GC6AA-10E Water Heater DSI
Our rating:4.4 out of 5 stars (4.4 / 5)

Pros
  • This water heater is made of weather- and damage-resistant materials for a long life.
  • Its door allows for easy outdoor repairs.
  • It is customizable for your power source.
  • It comes with temperature and safety gauges.
Cons
  • There are a few repairs that cannot be done through the door, which means more complex repairs.

3 PrecisionTemp RV-550 Tankless Water Heater

The PrecisionTemp RV-550 Tankless Water Heater is a particularly compact heater, which is good news for those who are looking to install in an RV. It is half the size and one-third the weight of most standard water heaters, while still maintaining its power.

Compact sizing is the name of the game for RV utilities, so its size is good news. It fits easily inside RVs without taking up valuable living space.

But that’s not all!

The PrecisionTemp has another claim to fame. It is incredibly efficient, cutting propane usage by as much as 50 percent.

In fact, the PrecisionTemp uses Reliable VariFlame technology control, letting it save both water and energy.

What’s the full story on that?

The PrecisionTemp manages this level of conservation by only functioning when you turn the hot water tap. This is a huge energy saver. You reduce your carbon footprint while saving money.

With that level of conservation, a 20-pound propane tank is enough to supply 940 gallons of hot water. In temperate weather, it needs less than 1.5 amps to run normally.

What else makes the PrecisionTemp such a popular choice?

Its gas levels automatically adjust in conjunction with the level of water usage and temperature. That means that you can rely on the water being the same temperature in every season.

The PrecisionTemp also supplies protection during the winter months with added freeze protection. This ensures that your water heater won’t freeze in frigid temperatures.

PrecisionTemp RV-550 Tankless Water Heater
Our rating:4 out of 5 stars (4 / 5)

Pros
  • It is extremely energy-efficient and saves energy and propane.
  • It supplies 50 percent more power than standard water heaters (while consuming less energy).
  • It automatically adjusts to supply steady heating and gas conservation.
Cons
  • It requires gas, not electric power.
  • To use freeze protection, you must continue to run gas supply and 12 volt.

4 Takagi T-KJr2-IN-NG Indoor Tankless Water Heater

The Takagi T-KJr2-IN-NG Indoor Tankless Water Heater is one of the best water heaters you can get for the price. Made for natural gas hookup, it is one of the most environmentally-friendly water heaters available.

With 140,000 BTU and a 6.6 GPM max flow rate, it is a powerful water heater that won’t eat up power or cash.

The Takagi is made for indoor installation. It has an Energy Star to attest for its environmental friendliness.

So what’s the full story?

The Takagi constantly regulates temperature with inlet and outlet thermistors. By monitoring and keeping temperature steady, it saves energy.

That’s what makes it so energy-efficient and cost-effective. With quality, durable materials and a lower carbon footprint, the Takagi earns a place as one of the best water heaters

It is small, compact, and perfect for radiant heating installation. What’s more, it can be changed into a direct-vent unit.

The Takagi falls into the medium price range, making it a great water heater for the price. It also has options for stainless steel venting, which can be bought separately.

These vents are also available online, but it’s up to you to install them separately.

Takagi T-KJr2-IN-NG Indoor Tankless Water Heater
Our rating:4.3 out of 5 stars (4.3 / 5)

Pros
  • The Takagi is extremely energy-efficient, which saves propane and money.
  • Constant temperature regulation means no overheating and reduced costs.
Cons
  • Some pieces like venting tools need to be bought and installed separately.

5 Eccotemp L10 Portable Outdoor Tankless Water Heater

The Eccotemp L10 Portable Outdoor Tankless Water Heater has some unique aspects to it. These land it in another category but still make it a great water heater.

What exactly does this mean?

For one thing, the Eccotemp is battery-powered. It only ignites the water heater flame when it detects water running from the tap. This means there’s no danger of overheating. It also means that you save a lot on heating costs.

What’s more, it comes equipped with an automatic safety shut-off timer, which cuts hot water flower after 20 minutes. This further reduces energy usage and utility costs.

It operates at 2.6 GPM flow capacity, making it perfect for locations with limited power access. In spite of that, it provides between 20 and 80 PSI water pressure.

It also supplies enough water to run hot water through two separate appliances simultaneously, at a temperature between 80 and 145 degrees Fahrenheit.

This combination of low-energy consumption and high output is what makes the Eccotemp a solid choice for your RV water heater.

But that’s not all.

The Eccotemp runs on liquid propane, but it relies on the battery to turn it on when the tap runs. Though natural gas is the engine that keeps it running, the battery is the ignition that sparks it.

This is a great way to divide energy sources for a powerful output.

Another perk of the Eccotemp is that it comes with a hose and showerhead. The latter can be adjusted for the kind of flow you prefer. This includes direct flow, mist, and scattered flow.

Eccotemp L10 Portable Outdoor Tankless Water Heater
Our rating:3.5 out of 5 stars (3.5 / 5)

Pros
  • The Eccotemp is highly energy-efficient, making it environmentally friendly and cost-effective.
  • It has a high output in spite of its low consumption.
Cons
  • Some users may find the 20-minute water safety shut-off inconvenient.

6 Girard 2GWHAM On-Demand Tankless Water Heater

The Girard 2GWHAM On-Demand Tankless Water Heater is one of the top water heaters for more reason than one.

This mid-priced water heater is a great choice for your RV. It is energy-efficient, cost-effective, and equipped for freezing temperatures.

So how does it achieve all this?

The Girard is equipped with a burner regulator. This lets it constantly adjust water temperature to a preset degree. This means you waste less energy and save more money.

All this means that it can run below three amps at all times.

What’s more, the Girard is made for RVs. It runs at 42,000 BTUs, the exact level perfect for RV plumbing systems.

If you’re planning on hitting Yosemite National Park in the dead of winter, the Girard will have you covered. It’s completely outfitted with freeze protection.

This will make sure that your pipes are warm and safe in subzero temperatures. You won’t be dealing with burst or frozen pipes. And you will always have water, no matter what the weather outside.

The Girard has something else that makes it a hugely popular choice for RV water heater. Users can preset water temperature.

The microprocessor constantly regulates water temperature based on rate of water flow and combination of hot and cold water. All this means that you can have highly-customizable, energy-efficient water flow.

The Girard also comes equipped with a special quiet motor. Your RV will be fully equipped without extra noise from running water regulators.

Girard 2GWHAM On-Demand Tankless Water Heater
Our rating:3.9 out of 5 stars (3.9 / 5)

Pros
  • The interior microprocessor allows for preset water temperature regulation.
  • There are no specialty hook-ups required — just those already available.
Cons
  • Freeze protection only provides for the unit itself. It does not cycle through all the RV pipes to heat them.

7 Tankless LPG Gas Water Heater

The Tankless LPG Gas Water Heater is a propane-powered water heater with a lot of special features.

So what is this all about?

For one thing, the Tankless LPG Gas Water Heater does not need the pressurized pump that many other water heaters do. Water flow starts with only 2 PSI. Most water heaters need a much higher PSI to kick into gear.

This is because the Tankless LPG contains an Excel Low Pressure Startup unit. This has a magnetic flow sensor that is one of the top pieces of tech for RV water heaters.

What exacty does this mean?

It means that the water heater will work even when you have extremely low water pressure. This is perfect if you will be camping in rural campsites far from urban water supplies.

The Tankless LPG also has a special Oxygen Depletion Safety Shut-off feature. This means that there is no need for any vents, flues, or special ductwork.

This saves you money while keeping you safe with vent-free technology.

The Tankless LPG is fitted with a copper heat exchange. This makes heat transferral easy and effective.

It also saves energy and propane by only turning on when the hot water tap is turned. This is yet another way this water heat is energy-efficient and cost-effective. It’s also one more thing that makes the Tankless LPG such a great choice.

Tankless LPG Gas Water Heater
Our rating:4.4 out of 5 stars (4.4 / 5)

Pros
  • The Tankless LPG is energy-efficient and cost-effective.
  • It has the capability of running with water pressure as low as 2 PSI.
  • Its ventless technology means there is no ductwork installation.
Cons
  • In order to flow, water temperature must be at least 40 degrees Fahrenheit. For the best flow, it must be at least 60 degrees.

8 Portable Propane Tankless Water Heater – EZ 202 – EZ Tankless

The Portable Propane Tankless Water Heater EZ 202 is battery-powered. This makes it a perfect choice for places that are far from electrical hookups. If you are planning on camping in a rural area without power, this might be your best RV tankless water heater.

The EZ 202 is small and compact. It’s perfect for indoor installation and won’t take up too much space. Its small size and weight also make it easy to transport.

So what’s the best part about the EZ 202?

This portable propane water heater is meant to be straightforward. It is designed to be easy to install and easy to use while still supplying heat and keeping you safe.

Just because it is small does not mean it doesn’t do the job of bigger water heaters. The EZ 202 supplies more than three gallons a minutes. It also allows for a rise of 45 degrees Fahrenheit.

So what does all this mean?

It means that if you want a straightforward, easy-to-use unit, the EZ 202 is a perfect choice Since it is battery-operated, it does not require any electrical hookups.

It also does not require a pilot light. Instead, ignition starts automatically when the hot water faucet is turned.

This makes for a water heater that is incredibly energy-efficient. Not only will you save energy, you will also cut back on utility costs.

The EZ 202 also works great with low water pressure. It can supply water with less than 2.9 Psi with its low water pressure ignition.

Portable Propane Tankless Water Heater - EZ 202 - EZ Tankless
Our rating:4.7 out of 5 stars (4.7 / 5)

Pros
  • The EZ 202 is incredibly energy-efficient.
  • It is battery-powered, which means it does not require electrical hookups.
Cons
  • Some users might prefer more advanced water heaters with specialty features.

9 EZ 101 Tankless Water Heater – Propane LPG

The EZ 101 Tankless Water Heater combines battery power with propane for efficient water heating. Its small size makes it easy to transport and install.

Like the EZ 202, the EZ 101 is made to be easy to use and easy to install. It uses a regular propane tank — the same kind you see powering barbecues.

Without the need for an electrical hookup, it is a great choice for camping in rural areas. If your trips will take you into the wilderness, this might be a good choice for you.

The EZ 101 is designed to keep you safe. It constantly draws cool air in to maintain a cool surface and prevent burns.

It does not have a pilot light. These run constantly, eating up fuel (and therefore, your money!). Instead, it uses an automatic ignition that turns on with the hot water faucet.

Saving propane and power also reduces your carbon footprint. The EZ 101 makes it easy to be energy-efficient, doing good for both the planet and your wallet. If you are looking to stay a little greener and save money, this could be a great choice for you.

It can also be hooked up to a standard garden hose hookup to function. Water hookups are straightforward and electrical hookups aren’t needed. All this means that the EZ 101 is a great basic water heater without any frills.

It is meant exclusively for outdoor use. It should not be installed anywhere inside your RV.

EZ 101 Tankless Water Heater - Propane LPG
Our rating:3.5 out of 5 stars (3.5 / 5)

Pros
  • The EZ 101 is extremely simple to install and use.
  • It is energy-efficient, saving you money and fuel.
  • It allows for power usage even without exterior hookups.
Cons
  • Without a ventilation system, users are responsible for ensuring they supply their own ventilation.

10 Camplux 5L 1.32 GPM Ventfree Outdoor Portable Propane Tankless Water Heater

Camplux 5L 1.32 GPM water heater is a hugely energy-efficient unit. It operates on water pressure as low as 2.5 Psi.

This makes it the water heater that can function with lower water pressure than any other.

Users can also pair it with the Camplex 12V 1.2 GPM Water Pump for even better results.

But what’s so great about this water heater?

There are tons of features on the Camplus water heater that make it a solid choice. For one, it is compact and comes with a folding handle. This makes it incredibly easy to install inside or outside.

It also allows for a temperature rise as high as 114.8 degrees Fahrenheit. It has a minimum required rise of 46.4 degrees to work properly with 1.32 GPM.

But that’s not all.

The Camplux also comes with tons of other special features that make it really one-of-a-kind. It has a flame failure unit to provide extra safety. It also comes with anti-freezing protection for cold weather camping.

What’s more, it also has an oxygen depletion safety shut off. This means that it is safe to install inside your RV. You can be sure that this feature will provide for safe ventilation inside your camper.

It’s features like these that keep the Camplux one of the best RV water heaters available!

Camplux 5L 1.32 GPM Ventfree Outdoor Portable Propane Tankless Water Heater
Our rating:3.6 out of 5 stars (3.6 / 5)

Pros
  • The Camplux functions with lower water pressure than any other water heater around.
  • It provides tons of special features like a flame failure unit, anti-freezing protection, and oxygen depletion safety measures.
Cons
  • The Camplux should not be used to heat drinking water.

Tankless Water Heaters For Your RV Buying Guide

So what are all the things you need to take into account when you’re comparing RV tankless water heaters?

After all, it’s not just a question of quality. It’s also a question of safety. You need to make a great choice so that you can heat your water efficiently while keeping your cabin ventilated.

Best RV Tankless Water Heater

Energy Efficiency

Of course, you want to make sure that your RV trips aren’t hurting the planet. But that’s not the only thing we mean by “energy efficient”. A good water heater is energy efficient to save you energy and fuel costs.

Just like any other home, temporary homes like RVs pay utility bills. Whether you’re heating water with propane, electricity, or natural gas, you will pay for those services.

So it makes sense to make sure that the best RV tankless water heater for you is one that saves fuel.

Whether this is through automatic ignition (only starting up when the hot water tap is turned on) or by decreased voltage, compare your options. Supplying hot water in an energy-efficient way is an absolute must for RV water heaters.

Thankfully, finding a water heater that’s energy efficient doesn’t mean paying more. There are plenty of options available to help you find one that will work well without burning extra fuel.

Durability and Quality of Materials

Of course, you’ll also need to think about the quality of the materials of your water heater.

This might depend of your definition of the best RV tankless water heater. Does that mean one that is installed inside the cabin? Or is it a traditional one that hooks up on the exterior?

If it’s the latter, having durable materials is even more of a priority. Every RV water heater has to stand up to the elements. This means everything from rain and snow to subzero temperature or blazing summer sun.

You never want to be stuck somewhere without hot water because your materials couldn’t keep up.

So what are some concrete things to look for in your water heater?

Make sure that the exterior of the water heater is made of weather-resistant material. This should include an anti-corrosion coating.

An RV water heater should be able to withstand lots of moisture without rusting. Having rust on your water heater isn’t just a recipe for materials breaking down. It’s also a safety hazard if it lets rust or other contaminants into the water supply.

RV Tankless Water Heater

Of course, moisture isn’t the only weather condition to worry about. A good water heater should also be prepared for extreme weather.

Frozen pipes are a problem even in traditional homes. Without freeze protection, you could find yourself looking at an expensive repair. Or you might just find yourself without hot water in very cold weather.

These things aren’t just a matter of convenience. They’re also a matter of safety. That’s why a good water heater is prepared for weather of any type.

Safety Features

RV water heaters also need to prepare for another concern: safety.

One safety concern is keeping people safe from burns when they need to touch the water heater. This might be because of repairs, maintenance, or even minor part installation. Ideally, water heaters should have a protective coating to keep you safe.

Even more important, though, is making sure your water heater is well-ventilated. Keeping the air inside your RV clean is incredibly important to the safety of everyone who lives there.

That’s why a water heater should ideally have some measures in place to ensure that. An oxygen failsafe unit is a great feature. It will notify you if the air in your RV becomes unbreathable. It may also increase ventilation efforts.

Of course, you should also make sure your water heater has a great ventilation system in the first place. Prevention rather than solution is always the best ways to address problems.

Conclusion

When it comes to choosing the best RV tankless water heater, there is a lot to think about. Thankfully, this list should be able to help you on the way.

Now that you have all the information, you’ll be able to make an informed choice about the best RV tankless water heater for your RV.

Maybe you’re planning on taking a trip out into the wilderness away from the world. Or maybe you want to hit a national forest in the dead of winter. Whatever your next adventure, you’ll have everything you need to enjoy your trip comfortably and safely.

Top 10 Best RV Tankless Water Heater In 2019 Reviews & Buying Guide
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