3 Best Electric RV Tankless Water Heaters Review

Posted by David Lee

Last Updated March 1, 2023
Do you love traveling in an RV? Well, if your answer is “Yes” then there is a chance that you enjoy exploring excellent outdoor activities, and you are looking for the best RV tankless water heater. Outdoor activities include hiking, running, cycling, and many more and you will enjoy a nice shower after having fun. While a cold shower is fun during summer, the weather is not always favorable. With winter almost here with us, you surely need to invest in an RV tankless water heater to be able to enjoy outdoor to the fullest. Traditional water heaters with tanks consume a lot of space and installing one in an RV is never a good idea. Luckily, tankless water heaters are smaller and consume less space, and so you will be able to have hot water in your RV even if you have limited space. When it comes to these heaters, there are numerous options in the market. That is why this tankless water heater review will guide you on everything you need to know, from the best models to the RV tankless water heater problems.

TOP Water Heaters Comparison Table

❑1. Portable Electric Tankless RV Water Heater [Stiebel Eltron]+
❑2. Electric High Capacity RV Tankless Water Heater [Girard]+
❑3. 3.6-4.5-7.2-9.5 kW Electric Tankless Water Heater [Bosch]+

1. The Best Portable Electric Tankless RV Water Heater [Stiebel Eltron]

Portable Electric Tankless RV Water Heater [Stiebel Eltron] Picture

Whether you are planning to go camping, spend precious time at the beach, or lounging around the pool, at times all that you need is a hot shower. Well, you can only achieve this by the use of this Portable Outdoor Tankless Water Heater. All you need is to attach the garden hose and a 2.0 lb propane tank and enjoy the luxury of hot water anywhere and everywhere.

Eccotemp l10 water heater is ideal for cabins, campsites, and can also be used around the house.



This excellent water heater works between 50 to 140 degrees Fahrenheit. It includes an electronic ignition that is powered by 2 “D” cell batteries thus making this heater great for areas where electricity is not readily available. The heater is compatible with 12-volt pumps, and it works perfectly with our heater.


The heater is lightweight making it easy to store and to carry anywhere. This makes it great for camping, dog showers, outdoor showers, and any other outdoor activity.


  • Hose and showerhead are not included

2. The Best Electric High Capacity RV Tankless Water Heater [Girard]

Electric High Capacity RV Tankless Water Heater [Girard] Picture

This incredible water heater uses an intense propane flame to heat water as it passes through the unit automatically. This means that as long as you put water into the unit, the hot water will come out. This unit comes ready for installation. With a horizontal vent kit included in the kit, you can easily install it for indoor use right after getting it out of the box. The heater is great for smaller homes and cabins.



The heater is a manual one. This means that you can easily adjust temperatures at the face of the unit with the use of knobs for water flow and gas pressure. It’s easy to read digital temperature display makes it easy for everyone to set the temperature as required for the best results.


The heater is a gas-powered one, and it is rated at 3.6 GPM, and it activates only when it is in use. This makes it an energy saver.


This water heater is the best that you can ever get since it is versatile enough to enable you to use it anywhere and everywhere. It can be used for indoor installation due to its safety features making it perfect for small homes, apartments, and cabins.


  • You will need to adjust the flow of the shower control constantly

  • The unit is susceptible

3. The Best 3.6-4.5-7.2-9.5 kW Electric Tankless Water Heater [Bosch]

3.6-4.5-7.2-9.5 kW Electric Tankless Water Heater [Bosch] Picture

This tankless RV water heater is the best for everyone seeking to get hot water within no time. The heater works well and never disappoints. It comes with this model that offers the optimum performance for an RV’s plumbing. With this heater, you do not need to have a particular LP gas line or special plumbing. The heater regulates the burner to maintain the set hot water hotness/temperatures. The heater also comes with freeze protection, and it is mostly used during winter.



To enjoy hot water, all you need is to turn on the heater and add cold water to the desired temperature. The unit features a microprocessor that monitors the cold water’s temperature, the flow rate, and the temperature of the outgoing hot water. This makes it possible for the unit to maintain a constant and steady flow of hot water.


Girard tankless water heater reviews confirm the fact that this unit is a quiet and brushless motor that makes no noise at all. Its 12V power works at less than 3 amps. With such a unit, you can be sure to get the best water heating results.


  • At times, the heater does not produce enough flow to turn on the heater

Best Branded Water Heaters

The market is dominated by some manufacturers such as: Stiebel Eltron, Girard, Bosch.

Camplux 5L 1.32 GPM Outdoor Portable Propane Tankless Water Heater

Outdoor activities offer enthusiasm and happiness Camplux water heater reviews has that figured out. Camplux water heater seeks to offer you an efficient and easy outdoor experience. This unit is excellent for camping, going to the beach or going for family vacations on horse stables, cabins, and many more.



While most people think that such units are only ideal for outdoors, this Camplux heater is different. While it is ideal for outdoors, it can be installed indoors as long as the room is well ventilated. With such a unit, you can wash your boat, dogs, horses, car, or even use it to shower in the house.


With this unit, you do not have to waste energy when you do not need to use it. It comes with ignition with 2 “D” batteries, and you can turn the ignition on when not in use.


  • Difficult to control the temperature at all

EZ 101 Tankless Water Heater – Propane LPG – Portable – Battery-Powered Ignition – Camping – RV Model: EZ101LPG

EZ 101 Tankless Water Heater comes in a charming design along with simple but efficient features. Just like its name, this tankless water heater works on a propane tank which makes it beneficial when compared to the traditional models since it is convenient and easy to use.

With this Unit, you do not have to buy a battery to maintain the heater’s operation since the operations entirely rely on the battery powered ignition. This means that you do not have to spend money on changing the battery.

As you read through tankless gas water heater reviews, you will notice that the heater does not require an electrical plug-in, making it ideal for camping or going to places with limited or no power. This heater can fit well in RVs, open shelters, cabins, workshops, barns, or sheds.


  • Very easy to install

  • The unit keeps the water hot for long

  • Its battery ignition is very convenient

  • The unit heats the water within no time

  • It is very affordable

  • It is lightweight making it portable

  • Work on low pressure


  • A bit of difficulty to maintain an even temperature


Atwood water heater 6 gallon starts up with just 2psi water pressure and can go up to 120 psi. What makes it different from other heaters is the fact that they require a pressure pump or at least 20 to 30psi to kick-start due to their outdated technology. This unit is ideal for camping, RVs, flats, rural cabins, hunting cabins, and many more.



Atwood heater saves energy and water at the same time by delivering hot water automatically as soon as you open the hot water tab. This heater comes with a magnetic water flow sensor that enables the unit to work under low water pressure and can be beneficial to those living in rural areas.


  • Maintaining an even water temperature can be a little bit hard

Camp Chef HWD5 Triton Water Heater

Whether you are going on a trip with your family, swimming in the pool, or relaxing on the beach, this unit is excellent for everything. From filling a portable pool, cleaning your pets, and taking a shower of the beach, you will eventually need a bath. With the camp chef water heater, all you need is to attach a garden hose and enjoy the hot shower. This hot water unit produces more hot water per minute than any other unit in its category. It can produce 1.5 gallons per minute.



The heater comes with a 4 settings shower head: jet, mist, off, and shower. It can heat 1.5 gallons per minute and also has fully adjustable water and heat flow. This means that you can get hot water whenever you need it without any problems at all.


This heating unit ignites automatically whenever one turns on the water. It uses 2D batteries for ignition. However, the batteries are not included.


  • Batteries are not included, and so you need to buy them.

New Suburban Sw6De 6 Gallon Dsi Electric Ignition/Lp Lp And Gas Rv Motorhome Trailer Water Heater

With the various water heaters in the market today, the look on suburban RV water heater sw6de is noticeable. Even though its flow rate is only 6 gallons, it meets all the requirements for most RV versions.

The suburban Water heater has a faster recovery, which means that you will have enough hot water. The cold water cycles on this unit are few, and so the water will heat very fast. Even if you are in a hurry, you can enjoy a hot shower within no time.

Since the number of gallons is low, the manufacturer covers for this by equipping the unit with a 1440 watt element. This means that you will be able to recover the same number of gallons per hour while camping. This unit comes with unique combinations. It comes with a width, height, and depth that are compatible, 12.75-12.75-19-3/16.

When it comes to the BTU number, you will be able to get 1200 BTUs if you decide to make good use of this unit. Possibly, these BTUs are lower than some other units, but it is very efficient.


  • Easy installation

  • Very affordable

  • Ideal for camping

  • Easy to use and it works very effectively


  • Tankless water heater’s electric elements are not effective

  • Some clients reported issues related to the propane

PrecisionTemp RV-550 Tankless Water Heater – Wall Vented

RV 500 tankless water heater was designed with RVs in mind the unit is only 13.5 inches wide, 13.5 inches thick, and 14.25 high. The unit is so easy to install since the exhaust vent is situated right on the outer panel.

This Precision Temp RV water heater comes with a gas modulation system. Thanks to its built-in sensors, the unit is capable of measuring the incoming water’s temperature as well as the intensity flow. Based on such information, the heater automatically adjusts the burner to ensure consistent water temperature.

The unit’s built-in freeze protection feature is the coolest one on this heater. Tiny 12V heaters protect the internal parts of the unit. This heater also comes with a thermostat that turns the burner on low heat once the external temperature reaches 38 degrees F.


  • The unit is specifically designed for RVs.

  • It is straightforward to install.

  • Portable since it is lightweight

  • Its built-in freeze protection makes it perfect for the winter season


  • Adjusting the temperatures to an exact degree can be difficult

PrecisionTemp RV-550 NSP Tankless Water Heater – Floor Vented

Built to fit outdoor activities, precision temp RV 550 nsp is ideal for a small house, an RV, a trailer, or camps. Your outside experience will be more significant if you carry this water heater to your destination. This unit brings relief to the users because of the design as well as the features the model is a great energy saver as it helps to save both water and energy. The unit will not work until you turn on a hot water tap and this means that whenever you are not using the water heater, it remains dormant and so no energy is in use. Also, since it is a tankless model, it only uses 50% propane.


  • There are no limits on how long you can enjoy the hot shower even if you decide to spend hours bathing; the heater will not let you down.
  • Very efficient – the unit heats the water only when the hot water tap is switched on.
  • Even temperature - this hot water unit has fantastic features to ensure that even temperature remains throughout bath time.


  • The unit is costly
  • It requires 1.5 gallons/ minute, which is not much compared to other units in the same category.

Water Heaters Pros and Cons

Overall, there are the most important things to consider when purchasing best electric rv tankless water heaters. Pay attention to the following unique features:
  • product's quality;
  • price;
  • etc.

What to consider when choosing an RV tankless water heater?

Selecting the right RV tankless water heater is not as hard as many think. As long as you know what you need in a water heater, the experience is just but a walk in the park! Here are some of the considerations.

Electric or gas

With only two types of RV tankless water heaters, the run on propane and the run on electricity, this depends on your taste. Also, you can choose depending on your location and the electric grid you are on. While some electric water heaters come with electric hooks to make them easier to install, you may find that propane versions are more accessible to install too and that in most cases, replacing the propane is better for flow in gas units.


when we all wish to get the best, for those who are not so good in dealing with mechanically advanced units, a tankless water heater is a simpler unit to maintain when compared to a vast, pilot-lit tank of water while purchasing a tankless water heater, it is always good to choose the one with a design that you can operate.


With so many tankless heaters to choose from, you might be able to save your time and effort by going for a unit that needs less or no maintenance. Some models are so complicated that they may end up becoming a headache to you and your family. When buying one, it is good to ensure that the product is tested for leaks and spillage this way you will be able to avoid maintenance cost for a while.


Apart from qualities, a good water heater should be able to minimize energy consumption in general; the best models should consume half the propane when compared to the traditional water heaters remember that the less the energy used, the safer your usage.


Always consider weight when buying an RV water heater this is because a heavy one may turn out to be a burden when outdoors. Heavy ones are also hard to install since you will need help. Also, a lightweight model is ideal for outdoors since you can carry it freely to your destination.


Price is what determines whether you will purchase a product or not. The reason is that you cannot buy what you cannot afford. For this reason, quality tankless water heaters ought to have a reasonable price. Always consider your budget before making a purchase.


Most RV tankless water heaters come with a warranty. When choosing the model to buy, you need to pick the one with the more extended warranty. Besides, if a product has a warranty, it means that the manufacturer is confident with the product.

What can you gain with a tankless water heater?

With the above information, you are now able to choose the best RV heater, however, if you are still feeling undecided, here are some reasons as to why you need to get this unit. In particular, these are the advantages of using a tankless water heater!

Saves space

RVs has limited space and most especially if you are on vacations. If you decide to take a 10-gallon tank, it will consume almost every left space in your RV, and you will not be comfortable. On the contrary, when it comes to tankless models, you can easily install it in your RV and save much space. You do not have to worry; many tankless water heaters are available to fit into your bathroom regardless of the space.

You do not have to wait

With the tankless water heater, you do not have to wait for the water to get hot. Also, you do not have to refill or reheat the tank once the standard models get low since it is a tankless heater, the water heats up automatically.

Saves energy

With this unit, you will not only be saving on space but also on energy. The heater uses less than 50% of propane to heat the water. The number is not as high when compared to the standard units. Even if you decide to use electric models the energy used is less; moreover, the unit is environmental friendly!

Concluding Remarks

In conclusion, choosing RV tankless water heater can be overwhelming; we cannot deny the fact that they are the best.

However, if you find it hard to choose, you can break it down into smaller steps, this can significantly simplify the task, and you will be able to make a more informed decision. While your decision depends on your taste and preference, choose the unit that will suit you, then consider the brand, and finally the model.


Let's go over some frequently asked questions about Water Heaters.

Q: Are these Water Heaters good for any RV type?

A: Yes, any Electric Tankless Water Heater for RV is good for caravan, truck camper, motorhome, camper trailer, campervan, etc. Check please our best electric rv tankless water heaters comparison table.

Q: Where to buy cheap Water Heaters for sale?

A: Take a look at this TOP best electric rv tankless water heaters kits reviewed of 2023 and then press the «Check Price» button to check their price and availability.

Q: What is the best Electric Tankless Water Heater for RV for money?

A: The Portable Electric Tankless RV Water Heater [Stiebel Eltron] is our Editor's Choice as the best model of Electric Tankless Water Heater for RV with its combination of performance, features, quality and price.

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Comments to Review

  1. Thanks for picking this great TOP! Very nice products

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