Look no further if you're finding a reliable and efficient tankless gas water heater for your RV. We've compiled the best RV tankless water heater options on the market to help make your decision easier.

Are you looking for an efficient, reliable, cost-effective way to heat water while on the road in your RV? A tankless water heater may be just what you need. Tankless hot water heaters provide hot water without storing it in a bulky tank, saving much-needed space inside your recreational vehicle. They also have energy-saving advantages over traditional models.

If you are wondering which model best suits your RV needs, this post can help you find the right one. We will explore the multiple benefits of owning a tankless water heater and all the available features so that you’ll know exactly which one is perfect for heating your rig!

How We Search For The Best Choice

If you're RVing and looking for a tankless water heater, it's important to do your research. Choosing the right one can be confusing, especially since there are so many options on the market. To make sure you get the best one for your needs, here are some tips on how to search for the best choice of an RV tankless water heater:

Know your budget and stick to it.

When buying a tankless water heater, you must know how much you want to spend. This will help you narrow your choices and ensure you spend your money wisely and buy something that will meet your needs.

Consider size

Tankless water heaters come in different sizes, so it's important to consider how much space you have available for installation. If you're limited on space, then make sure to look for a smaller model that will fit in your RV.

Know your flow rate.

How many gallons per minute (GPM) do you need from a tankless water heater? Knowing this can help you choose the right size and power heater.

Check the warranty

Make sure the tankless water heater comes with a good warranty. This will help ensure that the manufacturer takes care of any defects or malfunctions.

Compare prices and features.

Once you've narrowed your choices, it's time to compare prices and features. This will help you find the best deal for your budget and ensure you get all the needed features in a tankless water heater.

By taking the time to find and compare different options, you can be sure to find the best water heater for your needs. With these tips in mind, you should be able to decide which is right for you. Happy shopping!

Our Top Picks

These are our five top choices among all the hundred different models we looked at and compared:

Our Top Five-Star Choice

Rinnai RU180iN Condensing Heater

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Why It's A Five-Star Choice

The Rinnai RU180iN condensing heater is the perfect way to enjoy unlimited hot water in your RV. Its space-saving design is energy- and space-efficient, conserving power while only heating when necessary.

Though professional installation is recommended, you'll enjoy a steady flow of hot water with this compact yet durable heater that's easy to install. With Rinnai's Condensing Heater, you can enjoy endless hot water for your household. Get yours today!

Things That Are Good To Know

This condensing heater is ideal for those looking for a powerful, instant hot water flow. The heater can reach up to 10 GPM for a constant stream of hot water.

It also features Rinnai's circ-logic technology, allowing users to pair the condensing heater with an external pump and reduce wait time for hot water via scheduled or on-demand recirculation. With the Rinnai RU180iN condensing heater, you can get the optimal performance needed while enjoying all the advantages that come with it!

Fun Story From A Product User

A satisfied user said:

"I recently installed the Rinnai RU180iN condensing heater and am extremely pleased. It was a very easy install, with clear and straightforward instructions. I was concerned about our well-having pressure fluctuations between 50-70 psi.

Still, this heater absorbed them without trouble, providing enough water for multiple showers and a sink or dishwasher. So far, this Rinnai condensing heater performs as promised - an excellent purchase! Highly recommended!"

Best Gas Water Heater

RecPro RV Tankless Water Heater

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Why It's A Five-Star Choice

The RecPro RV tankless water heater is a great solution for anyone who wants to enjoy the convenience of hot water on demand. With no tank required, you will never have to wait for the water to warm up or worry about running out before your shower is complete.

This amazing machine provides an endless supply of hot water at all times so that you can always be sure you have plenty of hot water when needed. With this innovative technology, you can save money and reduce your environmental impact by using only as much heated water as necessary. Enjoy the luxury of having a steady stream of hot water available whenever you need it with RecPro's RV Tankless Water Heater.

Things That Are Good To Know

This water heater also has an overheat protection system that prevents operating temperatures from reaching dangerous levels. It ensures the safety of users and their property while prolonging the machine's life.

The water heater's exhaust structure is designed to ensure clean air and reduce noise levels, providing a comfortable environment. It is also fitted with a dust net to ensure no dirt gets into the tankless water heater while in operation.

Fun Story From A Product User

A satisfied user said:

"I recently installed RecPro's RV Tankless Water Heater, and it was one of the best choices I've made for my camper. The installation process was surprisingly easy, and RecPro provided excellent instructions to help make the process even simpler.

Once installed, I didn't notice a considerable increase in propane usage compared to my old 6-gallon water heater. It also automatically cycles off if the pressure drops too much; you must shut off the water demand and then turn it back on again."

Best Digital Display Water Heater

Tankless Digital Electric Water Heater

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Why It's A Five-Star Choice

This tankless digital electric water heater is the perfect solution for consistent, instant hot water. A 5.5KW heating system provides warm water of at least 116℉ in no time - so you don't have to wait around for it to heat up or worry about fluctuating temperatures.

Perfectly designed to fit under your sink, this Tankless digital electric water heater is sure to be a great addition to any home. Say goodbye to lukewarm showers and enjoy hot water whenever you need it!

Things That Are Good To Know

Tankless digital electric water heaters are the ideal choice for any home or RV. Not only are they convenient to use with digital displays and touch control panels that make temperature settings easy, some models even come with remote control for installation under sinks.

Tankless water heaters also provide safety and durability thanks to their multiple protection devices, strict tests to ensure 100% safety, and separately designed inner water and electricity lines. Tankless digital electric water heaters offer convenience, safety, and durability benefits, making them an ideal choice for any home.

Fun Story From A Product User

A satisfied user said:

"I recently installed an Ecotouch Tankless digital electric water heater for a tiny house/hunting cabin project, and I'm very pleased with the results. Finding an on-demand water heater that would not draw too much power was important, so I opted for the 5.5kW model over the 6.5kW model.

The installation process was straightforward and didn't take me more than a few hours (assuming you're comfortable enough with plumbing, you can install a 30-amp double pole breaker for the 240V supply)."

Ideal for Family Use

FOGATTI RV Tankless Water Heater

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Why It's A Five-Star Choice

The FOGATTI RV tankless water heater is designed to provide an unprecedented experience for caravans traveling at high altitudes. The high altitude suitability mode ensures that the machine runs smoothly even when driving up to 9800 feet in the Denver plateau.

This advanced technology also prevents water from getting too hot and saves propane natural gas, thanks to the staged combustion technology. With this RV tankless water heater, you can enjoy a safe, reliable and efficient hot water solution anywhere you go.

Things That Are Good To Know

This tankless water heater for RVs is perfect for continuous hot showers and multiple people in the caravan. With no need to wait 20-30 minutes for hot water, you can enjoy a long shower without interruption. Its propane fuel ensures you don't have to worry about running out of power in your caravan, saving you both money and trouble.

Plus, Fogatti has included a pressure relief valve in their product, so you won't have to buy one separately - another cost savings! Enjoy all the convenience of this tankless water heater on your next adventure!

Fun Story From A Product User

A satisfied user said:

"I recently purchased this tankless water heater to replace the Atwood 6 gal electric/gas unit in my Nomad trailer. Installation was quick and easy, with only minor plumbing adjustments, and the product fit perfectly into the opening.

Although I made an error by wiring it up to a 110V circuit, which is not recommended, Fogatti's service team responded quickly and with empathy toward my problem. They immediately sent me a replacement control board that was installed easily and worked as advertised!"

Best Portable Water Heater

Camplux Tankless Propane Heater

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Why It's A Five-Star Choice

The Camplux tankless propane heater is the perfect way to enjoy hot water in minutes. This portable water heater is easy to set up and use - connect the included inlet, outlet pipes, and gas regulator, and insert 2 D-cell batteries. With its low water pressure start of 3.6 PSI, you can instantly enjoy up to 2.64 gallons of warm water.

No more waiting for hot showers or long wait times between dishes! The Camplux tankless propane heater offers the ideal solution for all your hot water needs when out on the roads.

Things That Are Good To Know

The Camplux tankless propane heater is a great choice for those looking to enjoy all the benefits of a tankless water heating system. It offers high performance and energy efficiency while providing various safety features to keep your home safe. This model has been tested by the CSA and has multiple protection functions such as flameout protection, anti-freezing protection, and overheating protection.

The drain plug also discharges residual water to avoid freezing in cold areas, making it perfect for long-term maintenance. Additionally, the gas supply will automatically shut off when the high water temperature reaches 167 °F for added peace of mind.

Fun Story From A Product User

A satisfied user said:

"This tankless water heater, then Camplux tankless propane heater, is an excellent option. Not only does it make hot water quickly and reliably, but it also runs on just two D batteries, propane, and proper water pressure. This means no more worrying about having an external power source for your hot water needs.

This product has been built to last with a durable construction that promises years of faithful service. Plus, Camplux offers good customer support if you need assistance or advice. With this machine, you’ll have enough hot water for hot showers or baths without worrying about running out."

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RV Tankless Water Heater FAQs

RV tankless water heaters are a great way to save space and energy, but they can be confusing to install and use. A lot of people don't know how tankless water heater heaters work and what the benefits are.

Our FAQs will answer all of your questions about RV tankless water heaters. We'll help you understand how they work, how to install them, and how to get the most out of your new british thermal units.

How long do tankless water heaters usually last?

Tankless water heaters usually last 15-20 years, depending on how well they are maintained and serviced. With regular maintenance, such as flushing the unit every two to three years, you can extend the life of your tankless water heater even further. Additionally, high-quality units that have been correctly installed by a licensed professional may last up to 20 years or longer with minimal repairs and maintenance.

Tankless models are typically more efficient than traditional tanks and can save money in the long run due to their increased lifespan. Regardless of which type of water heater you choose, having it regularly inspected and serviced will help ensure it operates at peak efficiency for many years.

How does a tankless RV water heater work?

A tankless RV water heater works by providing hot water on demand. Hot water is generated when a cold water flow passes through a heat exchanger within the tankless unit. The heat exchanger then warms the cold water to whatever temperature was set for your RV, thus providing you with an unlimited hot water supply.

Tankless models are also more energy efficient than traditional tank-style models, saving you money in the long run. Additionally, they take up far less space and can be placed in almost any location in your camper or trailer. It makes them an ideal choice for those who want to save space while still having access to hot showers and other amenities while camping or traveling in their RV.

What kind of maintenance does a tankless water heater need?

Tankless heaters have a longer lifespan than conventional tank-style water heaters, but they still need regular maintenance to keep them running smoothly. To maintain your tankless water heater, you should flush it out every six months to remove any built-up sediment. You should also check the filter regularly and replace it when necessary.

Additionally, check the condensate drain for blockages and corrosion and inspect burners for proper operation and ignition. Lastly, follow your manufacturer's recommended maintenance schedule to ensure the best performance from your tankless water heater. By staying on top of these regular maintenance tasks, you can keep your tankless water heater running more efficiently for years.

Do tankless water heaters need more maintenance?

Tankless water heaters do not require more maintenance than traditional tank-style water heaters. They may require less maintenance because fewer parts can wear out over time. However, it is important to regularly check a tankless water heater's inlet and outlet connections to ensure that they are free of debris and corrosion, as this could affect the unit's performance.

Additionally, descaling should be performed every few years with either an acid solution or an electronic descaler, depending on the model of your tankless water heater. These simple steps will help keep your tankless water heater running efficiently and reliably.

Do tankless water heaters use much electricity?

Tankless water heaters generally use less energy than traditional tank-style water heaters. The exact amount of electricity used depends on the size and efficiency of the unit, as well as how much hot water is being used. Tankless heaters can be up to 34% more efficient than tank-style models, saving energy costs hundreds of dollars annually.

However, it's important to note that installing a tankless water heater requires an upfront investment for purchasing the unit plus installation fees, which may offset any savings from lower energy bills. Tankless water heaters offer long-term benefits but require careful consideration when deciding if they are right for you.

What is the benefit of a tankless water heater?

A tankless water heater offers many benefits over traditional storage-tank systems. These include a continuous supply of water, more efficient energy use and cost savings, smaller sizes for easier installation in homes with limited space, and a longer life span.

Tankless heaters provide an endless supply of hot water on demand without needing to heat and reheat a large tankful of stored water constantly. This eliminates standby losses that occur with storage tanks, saving energy and money. They are also much more compact than traditional models, which can benefit properties where space is at a premium.

Can tankless water heaters burst?

The short answer is yes. This is because all water heaters must be able to handle the pressure of the hot water they provide to operate safely and efficiently. If a tankless water heater’s pressure relief valve fails or has not been properly installed, it can cause them to burst. You must have your tankless water heater regularly inspected and ensure any repairs are done promptly by a qualified professional. That way, your system will remain safe and reliable for years.

In addition, the maintenance of your tankless water heater also plays an important role in its safety and longevity. You should always ensure that your unit is free of debris and debris-causing materials, such as minerals.

It is also important to periodically flush out your system to remove any buildup that can lead to corrosion or other issues. These steps will help ensure that your tankless water heater remains safe and reliable for years to come.

What is the best RV tankless water heater?

The best tankless water heater for you depends on several factors, such as your budget, the size of your RV, and how much hot water you need. 

Generally speaking, electric tankless water heaters are more energy-efficient than propane models and can be a good choice if you want to save money on your energy bills. However, a propane model may be a better choice if you use hot showers or other high-demand appliances in your RV.

Can tankless water heaters still leak?

Yes, tankless water heaters can still leak. Tankless water heaters are made up of several parts that must be installed correctly and regularly maintained to remain leak-free. If your new tankless water heater is not properly installed or maintained, it can develop a leak in any of its components, such as the pipes, valves, seals, or other areas.

It is important to inspect your electric tankless water heater for leaks regularly and have it serviced by a professional when necessary. To ensure that your tankless water heater remains leak-free and functioning at its best, follow the manufacturer's instructions for installation and maintenance.

What Is The Best RV Tankless Water Heater For You?

A tankless water heater is an excellent investment for upgrading their RV's water heating system. With a tankless option, you'll enjoy unlimited hot water, more efficient energy use, and a smaller, lighter unit. However, choosing the right one for your RV can be a challenge.

When looking for the best RV tankless water heater, it's essential to consider factors such as flow rate, power source compatibility, and ease of installation. The suitable unit lets you enjoy a comfortable and convenient hot water experience on the road.

We hope that this guide has helped you in your search.

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