The Top 10 Best RV Tankless Water Heater

Why do you need the best RV tankless water heater? Try to imagine this. You are on a camping trip and you are back to your trailer after a long day. Everything that you can think of now is a hot shower. That will be possible thanks to the reliable work done by your water heating appliance. Therefore, you need to choose your heater carefully.

We tried to sum up everything you need to make the right choice in one article. Start by looking at an in-depth guide on how to choose a tankless water heater and then move on to the reviews of the top units on the market. By the time you finish reading, you will know precisely what unit is ideal for you!

NameWater Output Power / VoltageDimensionsWeight
EcoSmart ECO 27 Electric Tankless Water Heater3 gallons per minute27 KW, 240 Volts, 112.5 Amps3.6 x 17 x 17 inches16.8 pounds
Bosch Tronic 2.5-Gallon Electric Mini-Tank Water Heater6.8 GPH120 volt, 1440 watts13.8 x 10.8 x 13.8 inches22.2 pounds
Camp Chef HWD5 Triton Water Heater1.5 gallons per minute12 x 4 x 15 inches
Stiebel Eltron 224196 240V, 1 Phase, 50/60 Hz, 12 kW Tempra 12 Plus Whole House Tankless Electric Water Heater0.37-3.0 GPM12 KW, 240V19.5 x 21.5 x 8.5 inches13.5 pounds
Eccotemp L10 Portable Water Heater w/ EccoFlo Diaphragm 12V Pump and Strainer2.9 GPM12 Volt, 4.4 Amp28 x 17 x 6.5 inches31.4 pounds
Eccotemp FVI-12 Liquid Propane, 3.5 GPM, High Capacity Tankless Water Heater3.5 GPM120V28 x 17 x 10.5 inches33 pounds
Camp Chef Triton 10L Portable Water Heater2.6 gallons per minute31 x 16 x 9.2 inches27.6 pounds
Camplux 5L 1.32 GPM Outdoor Portable Propane Tankless Water Heater1.32 GPM12V, 3W11.4 x 5.5 x 14.6 inches10.8 pounds
Takagi T-T-KJr2-OS-LP Outdoor Tankless Water Heater, Propane6.6 GPM6.7 x 13.8 x 20.3 inches38 pounds
Girard 2GWHAM On-Demand Tankless Water Heater2 GPM12V, 3 amps15.5 x 22.5 x 12.5 inches22 pounds

EcoSmart ECO 27 Electric Tankless Water Heater

6 used from $230.55
Amazon Amazon.com
Last update was in: September 9, 2019 9:25 am

Product features :

EcoSmart is the company offering us the first candidate for the best electric heater for RV. Their Eco 27 Electric Tankless Water Heater weighs only 11 pounds and measures 17 x 17 x 3.6 inches. Although the unit is compact, it can handle two applications at the same time. As for the heating output, it depends on the water temperature. However, the unit can heat up to 3 gallons per minute even if the water is extremely cold (around 37F).

You have total control over the heater since you can adjust the temperature in 1-degree increments. When it comes to materials used, the manufacturer decided for a combination of stainless and copper elements. That increases durability and efficiency of the product.

You will get a lifetime warranty, but keep in mind that customer support is poor. Also, do not forget that utility bills are higher than if you are using a propane heater, which is expected from an electric unit. When it comes to the electrical requirement, it needs 27 kW at 240 volts and maximum power is 112.5 AMP.

Pros:

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    Compact and lightweight
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    Adjust the temperature in 1-degree increments
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    Can heat up from 3 – 6 gallons per minute

Cons:

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    Poor customer support
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    High utility bills

Bosch Tronic 7738004996 2.5-Gallon Electric Mini-Tank Water Heater

2 used from $99.90
Free shipping
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Last update was in: September 9, 2019 9:25 am

Product features :

If the aesthetics of your RV matter, you should definitely consider Bosch Tronic 7738004996 Electric Mini-Tank Water Heater. It weighs only 15 pounds and its measurements are 13.75 x 13.75 x 10.75 inches. You have three options for mounting this unit – you can place it on the wall (comes with a bracket), shelf, or mount it on the floor.

The capacity of the tank in the Bosch Tronic 3000T is 2.5 gallons. The trick is in the recovery rate, which is about 6.8 gallons per hour. You might not think this is a lot, but you should keep in mind the competitive price of the product because you will get excellent value for money. The unit can raise the temperature of the water up to 145F, which is pretty impressive. The water fittings are ½” male NPT and you can simply plug the unit into a 120V outlet.  

The pressure relief valve is included, but keep in mind that it might become prone to leaking after a while. Also, this is a small heater and it is not adequate for entire families.

Pros:

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    Mount it on the wall or the floor
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    Can increase water temperature up to 145F
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    Simple installation

Cons:

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    Cannot serve entire families
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    Pressure relief valve prone to leaking

Camp Chef HWD5 Triton Water Heater

1 used from $125.81
Free shipping
Amazon Amazon.com
Last update was in: September 9, 2019 9:25 am

Product features :

Camp Chef HWD5 Triton Water Heater might be the best RV tankless water heater for those with a limited budget. If you do not want to spend too much money or you go solo on your camping trips, this unit will suit your needs. It was designed of steel and it weighs 15 pounds including the stand. The heater runs on propane, which means you will also save some cash on utility bills. Just a single tank is enough for more than 10 hours of continuous use.

The water flow is limited to max 1.5 gallons per minute. However, decreasing the flow is recommended so that the unit can heat the water better. It is estimated that it can raise the temp for 100F if you use 0.5 GPM. Camp Chef provided a shower head with four settings with the packaging, including jet, shower, and mist, as well as an 8-inch long water hose.

Do not expect wonders from this unit, especially in terms of durability. However, if you are looking for a compact heater that can do a solid job and one that you don’t plan to use often, Camp Chef Triton can be a good choice.

Pros:

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    Affordable price
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    Multiple settings for the shower head
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    Runs on propane to save on utility bills

Cons:

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    Limited performance
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    Cannot provide for more than 2 persons

Stiebel Eltron Tempra Plus 12 kW, Tankless Electric Water Heater

2 used from $299.25
Free shipping
Amazon Amazon.com
Last update was in: September 9, 2019 9:25 am

Product features :

Stiebel Eltron Tempra series has ten different variations in strength, but we find the Plus 12 kW Tankless Electric Water Heater to be an ideal combo of performance and cost. The installation is simple since no venting is required for electric heaters. The unit works in total silence and it won’t disturb your activity. You have excellent control over heat thanks to the digital temperature display.

The heating chambers are made of solid copper to increase efficiency and durability. This is a 100% German product and it complies with strict EU quality standards. Those are reasons enough to consider Stiebel Eltron Tempra Plus a premium heater. It has a compact design and weighs only 13 pounds. It can heat up to 3 gallons of water per minute, which ensures a constant output at all times.

The only issues that this heater has are related to money. It is one of the priciest models on the market and things do not get cheaper once you purchase it. In fact, you can also expect high utility bills. However, if you are ready to cover the costs, you can expect an excellent and durable product in return.

Pros:

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    Impressive durability
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    Compact and lightweight
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    Total heat control
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    Simple installation

Cons:

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    High initial cost and utility bills

Free shipping
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Last update was in: September 9, 2019 9:25 am

Product features :

This heater runs on gas with battery ignition and it has an automatic shut-off timer. If the water hasn’t been running for 20 minutes, it will automatically stop and start again once you turn it on. Eccotemp L10 Portable Outdoor Tankless Water Heater is also intended for outdoor use. If you want to leave your trailer for a camping trip, you can take the unit with you. You can use the included hose to connect it to a standard 20-LB grilling tank.

The rectangular design fits with any décor. The measurements of the unit are 35.5 x 13.6 x 7 inches. Combined with the weight of 27 pounds, they make this product portable, but you can’t help but feel that it could weigh a bit less. Fortunately, it overcomes that with performance. The increase of water temperature goes to 145F. The unit can serve two faucets at a time, but it works better with just one.

The manufacturer used a mix of high-quality and cheap materials. The rain cap on top is of stainless steel and resists rain and corrosion. On the other hand, the temperature knobs are cheap and might fall off quickly. Unfortunately, the customer support is non-existing despite the included warranty.

Pros:

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    Automatic shut-off timer included
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    Can be used outdoors
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    Comes with a hose to connect to 20-LB tank

Cons:

  • Could weigh a bit less
  • Temperature knobs are cheap

Eccotemp FVI-12-LP High Capacity Propane Tankless Water Heater

3 used from $206.35
Amazon Amazon.com
Last update was in: September 9, 2019 9:25 am

Product features :

You might that this is the best RV tankless water heater with large capacity. You can control the heat output yourself, choosing from 25,000 to 74,000 BTUs. When it comes to flow rate, it can go up to 4.8 gallons per minute. However, keep in mind that it will only increase the water temperature by 45F. If you want an improved increase, you should decrease the flow.

What attracts you to this model is an elegant design. You can see that the manufacturer wanted to make a modern-looking unit and Eccotemp FVI-12-LP is the result of that. The digital display with two separate knobs for controlling water and gas is located on the front panel of the unit. Aside from running on propane, you can also plug this unit into a standard 120V outlet.

The downside of this product is that it cannot provide for multiple applications at the same time. Once you realize that, you see that the high capacity claim is nothing but a myth. However, if you are not looking for a product to use full-time, it is still a reliable heater.

Pros:

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    The heat output goes up to 74,500 BTUs
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    Modern and elegant design
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    Can utilize both gas and propane

Cons:

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    Cannot provide for multiple applications
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    Need to decrease water flow for optimum heat rise

Camp Chef Triton 10L Portable Water Heater

Free shipping
Amazon Amazon.com
Last update was in: September 9, 2019 9:25 am

Product features :

The manufacturers usually go for white as the dominant color, but Camp Chef Triton 10L Portable Water Heater is for fans of silver. Other than that, it is a classic rectangular design with a water hose and shower head with multiple functions.

The performance is something more users care about than looks. Camp Chef Triton has a minimum water flow of 1.1 GPM and you can elevate it up to 2.6 GPM. In case of the maximum flow rate, you can expect the temperature of water to increase by around 40F. The good news is that you can continuously use it for six hours with a standard propane tank.

The unit weighs 25 pounds and that doesn’t make it as portable as the manufacturer claims. And if you plan to take it outdoors, keep in mind that it doesn’t perform well in windy conditions.

Pros:

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    The maximum flow rate of 2.6 GPM
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    Silver color dominates the design
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    Six hours of continuous use with a single tank

Cons:

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    Could weigh a bit less
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    Doesn’t perform well in windy conditions

Camplux 5L 1.32 GPM Outdoor Portable Propane Tankless Water Heater

4 used from $103.41
Free shipping
Amazon Amazon.com
Last update was in: September 9, 2019 9:25 am

Product features :

Camplux 5L 1.32 GPM Outdoor Propane Tankless Water Heater is the definition of portability. The product weighs only 10 pounds and you can take it anywhere with you. It has a folding handle so that you can carry it comfortably. It runs on propane but the ignition batteries are purchased separately.

Now, let’s talk performance. You cannot expect too much with such a compact unit. However, it is capable of increasing water temperature to 118F. As for the flow rate, you can get at most 1.32 GPM and at that rate, you shouldn’t expect more than 46F temp rise. The good news is that it only needs water pressure of 2.5 PSI to start and it is packed with safety features.

Camplux offers a low-costing product, which means you need to sacrifice some things. One of them is the shower attachment which was made of poor quality materials. Aside from that, you cannot expect it to serve multiple faucets. Regardless, if you need an affordable unit, this is the best RV tankless water heater you will find.

Pros:

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    Affordable price
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    Extreme portability
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    Low water pressure needs to start

Cons:

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    Can only be used with a single faucet
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    Shower attachment is of poor quality

Takagi T-KJr2-IN-LP Indoor Tankless Water Heater, Propane

Free shipping
Amazon Amazon.com
Last update was in: September 9, 2019 9:25 am

Product features :

If you are splashing your cash to enjoy the comfort of your RV, you want to know that it is money well-spent. The positive reviews of hundreds of users around the web speak in favor of Takagi T-KJr@-IN-LP Indoor Tankless Water Heater. It has incredible heat output that goes up to 140,000 BTUs.

The maximum flow rate it can push is 6.6 gallons per minute. In other words, this heater will have no problem serving multiple faucets at the same time. Many people even use it in their small residential homes, which would mean they should be more than suitable for a trailer.

Copper is the choice material for heat exchangers and Takagi made a good call to choose it. Since venting is required, the installation might be a bit tricky. The heater runs on propane, but it can also be plugged into 120V outlet. You control the heat via a digital display, which gives you optimal temperature control.

Pros:

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    Extremely durable
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    Excellent flow rate
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    Impressive heat rise
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    LCD display included

Cons:

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    Installation is a bit tricky
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    A bit pricey

Girard 2GWHAM On-Demand Tankless Water Heater

2 used from $461.78
Free shipping
Amazon Amazon.com
Last update was in: September 9, 2019 9:25 am

Product features :

Why would you consider Girard 2GWHAM On-Demand the best tankless water heater for RV? First of all, it is a unit of premium quality. It has a bunch of safety features, including the anti-freezing one that makes it adequate to use during the winter. It has a motor that runs silently and it spends fairly little power for an electric heater.

However, we expected the product to perform better for a price. Even the manufacturer admits that the maximum heat output is only 42,000 BTUs. While that might be okay during normal weather conditions, cold and snowy days will also mean no hot water.

The unit weighs 22 pounds and its dimensions are 15.5 x 22.5 x 12.5 inches. The box-like design doesn’t take up a lot of room.

Pros:

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    Compact box-like design
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    Silent motor
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    Anti-freezing safety feature

Cons:

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    Hefty price tag
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    Limited BTU output
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    Cannot heat water on cold days

How to Pick the Best RV Tankless Water Heater

We will start with the reviews soon, but before we do that, let’s take a moment to focus on how to select the best RV water heater. This will be particularly important if you are a newbie and it is the first time purchasing this type of product.

Here Is Why Size Matters

Best RV Tankless Water Heater

The first thing you want to consider is how many people will use the water heater. If it is only you and your partner going on a camping trip, a compact unit will fulfill your needs. However, if you are taking your entire family, you should think about purchasing a large model.

Please consider two things. The first one is the location of the heater. You need to make sure that there is enough room in your RV for it. Apart from that, keep in mind that a small unit takes less time to heat up the water than a big one. For example, it will only take about 30 minutes for 6-gallon heater to get the water hot. On the other hand, you might have to wait for more than an hour with a 10-gallon model.

Finally, please acknowledge that small units are not capable of handling multiple users at the same time. In other words, the hot water can only run through a single faucet. If you want to increase that number, you will need a large unit.

What Type of Fuel Do You Want to Use?

In most cases, you will have two options at your disposal:

  • Electric tankless water heaters
  • Propane tankless water heaters

Each option has a distinct advantage and you should pick based on your preference. When it comes to electric heaters, they require minimum effort for maintenance. They should be your choice if you don’t want to go through a hassle of maintaining your boiler on a regular basis. However, gas tankless heaters cost less per unit, which means you will spend less money if you use them. So, if you are looking to save some dollars to spend them on something else, the fuel choice you should go with is propane.

You Need Extra Accessories

Trust us on this one – the best RV tankless water heater will have all the extra equipment included. These additional features include showerhead, hoses, fittings, and maybe even a digital display or remote control. You do not want to have to buy these accessories separately as it will just be a hassle.

Check out the Safety and Warranty Features

When it comes to safety, there is not much to worry about as long as you buy your heater from a reputable brand or a well-known online store, such as Amazon. On the other hand, the warranty is often an indicator of whether the manufacturer has trust in the product they created. The general rule of thumb is the longer the warranty the better. However, you also want to check its features and if they include replacement of broken parts without any cost or any kind of refund policy.

Consider Your Budget

Many of us do not talk about this gladly, but the price is a factor that you need to keep into account. In fact, perhaps it should be on top of your list unless you decided to splash your cash on a water heater. The truth is that the cost of these units largely varies. You can get a unit that can do a solid job for up to $200. However, if you want a reliable and durable unit, you should think about setting aside $400 to $600. The good news is that more money usually means more features and improved efficiency and performance of the product.

Do You Think You Can Handle the Installation?

Best RV Tankless Water Heater

Most RV water heaters come with an installation manual that thoroughly explains the process. However, if you are a newbie or you are not good at DIY stuff, you should go with non-complex units. You can try to find online instructions for setting up your desired model. Alternatively, you can just call a friend or a professional and ask them to install the heater for you.

What Is the Best RV Tankless Water Heater on the Market?

We are getting to the core section of this article now. Our team of experts singled out top 10 tankless water heater units for your trailer. The only thing you should do is focus and find the model that perfectly fits you.

​​​​Conclusion:

It seems that we have nothing else to say when it comes to the best RV tankless water heater for your needs. We hope that at this point you picked your favorite unit. In case you didn’t, we would suggest for reading the buying guide again. The first thing you should focus on is how often you will use the heater and how many people should it provide hot water for. Then move on to choosing the desired features and select one of the phenomenal units from this review. Whichever model you choose, you will have hot water for all your RV showers while on a camping trip!

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