5+ Best Electric Tankless Water Heater For RV In 2022

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Other than having a reliable electric heater, a reliable water heater system is another important thing to have for every RV owner. With this, you can rest assured that you’d get warm water, even when you may not have access to gas or electricity.

Quite a number of electric tankless water heaters are available on Amazon. From the likes of Koldfront 24-volt that can heat up to 3 gallons per minute to the  Rheem RTEX-13 with digital temperature display.

But to make your decision-making process faster, we’ve collated different tankless heaters using factors like ease of use, price and size. We’ll wrap up with FAQ’s where you can find answers to possible questions on using and maintenance of electric water heater.

5+ Best Electric Tankless Water Heater For RV In 2021

If you’re looking for the best electric tankless water heater for your RV, then this blog post is what you need.

We’ll go over some of the top options on the market and give insight on what makes them great and the cons about each one.

Let’s Get Started!

1. Stiebel Eltron Tankless Water Heater

Stiebel Eltron Tankless Water Heater

Stiebel Eltron Tankless Water Heater

Efficient, eco-friendly heaters available. They offer a 0.33 energy factor and come in a variety so that you can get exactly what you need.

Stiebel Eltron is a brand known for producing exceptional devices, and this particular tankless water heater is no exception as it comes with every feature needed to have your water warm whenever you are on an adventure.

No doubt, it comes out pricey. But its performance and features sure justify what is sold at. One of such features is the advanced flow control technology, which ensures that water temperature gets maintained without interference.

One would expect that it’s difficult to get around, but that is not the case every buttons functions are easy to grasp just by looking at the labels on them. – From the digital temperature display to preset buttons and memory buttons.

However, to get the best for your money, it is recommended that you get a plumber and electrician to have it fixed.

What We Like:

  • It can be installed easily as it comes with an easy to follow instructional manual, and you can also decide to hire professionals if you don’t know your way around tools.
  • Easy to use interface and extremely quiet while using.
  • The cover opens on a hinge, which makes it super convenient for maintenance.

What We Don’t Like:

  • The bottom threaded brass fittings can be moved easily.

2. Barbella Electric Hot Water Heater

Barbella Electric Hot Water Heater

 Barbella Electric Hot Water Heater

The Barbella Electric Hot Water Heater is an economical and environmentally friendly and efficient alternative hot water heater for RVs.

Barbella is an electric water heater powered by a battery, hence it is lightweight and easy to move around.  Also, this electric heater is made with green environmental materials in accordance with international standards. – With this, you can be assured that it contains no harmful substance.

Other than its multiple installations methods, Bardella Electric Hot Water Heater is small enough to be installed not only in RVs but also in the kitchen, bathroom, restroom or other places due to ease of installation.

No doubt that nothing stands out about this electric water heater, but its specs and performance are as the manufacturer describes.

What We Like:

  • Automatically shut off.
  • Easy to install and fit under the sink nicely.
  • Lightweight.
  • Perfect for low water pressure.

What We Don’t Like:

  • Threading a compression hose to it is difficult.

3. ECOTOUCH Point-of-Use Hot Water Heater

ECOTOUCH Point of Use Hot Water Heater

ECOTOUCH Point-of-Use Hot Water Heater

Safe, portable, and convenient to use. Eliminates the hassle of using electric kettles and has an automatic shutoff when it is done.

Are you looking for an electric water heater made just for sinks? The  ECOTOUCH Point-of-use heater should come to mind. It can be said to be affordable. However, that is not the only reason we have it on our list of best electric tankless water heaters for RV.

Despite its affordability, this electric heater comes with exceptional features: one of such feature is the adjustments system that adjusts powers input using the flow rate and temperature settings in real-time. – This ensures optimal energy efficiency and power usage.

ECOTOUCH point-of-use hot water heater is equipped with multiple protection systems made up of leakage, dry heating and over-temperature protection, all of which work together to prevent harm of scale and leakage.

Reviews from verified buyers do not only confirm ECOTOUCH Point-of-Use Hot Water Heater to be of good quality but also easy to install, hence you do not need to hire a professional to use it in your RV sink.

What We Like:

  • It is easy to install as the electrical connections are easy to understand.
  • Awesome customer service, so you can always get your complaint attended to.
  • Features a smart self-adjustment system for optimal energy efficiency.
  • Control is seamless as it comes with a touch control panel

What We Don’t Like:

  • Usage is limited to the RV sink.

4. RINKMO Electric Tankless Water Heater 18KW

RINKMO Electric Tankless Water Heater 18KW

RINKMO Electric Tankless Water Heater 18KW

Heats up water as needed instantly on-demand. Energy-efficient and space-saving, the 18kw Rinkmo is one of the ideal solutions for RVs.

This RINKMO electric tankless water heater is an all-around great heater, but it requires a 2 x 40 AMP breaker and 2 x 8 AWG wire. It is designed in a way that you aren’t limited to the quantity of water a tank can hold – It instantly supplies the hot water your lifestyle demands.

Just like the ECOTOUCH Point-of-Use Hot Water Heater, it is equipped with multiple protection systems like electricity lines separate technology that helps in preventing scale and rust from building up inside the tank.

Furthermore, it comes with senor and smart modulating technology which help adjust inputs and temperature using the flow rate and temp setting in real-time.

What We Like:

  • IPX4 certified so there is no need for regular cleaning.
  • It is easy to install and operate.
  • Auto stops heating system for safety and power usage maintenance.

What We Don’t Like: 

  • It is too technical to install without a professional.

5. Rheem RTEX-18 18kW 240V Water Heater

Rheem RTEX 18 18kW 240V Water Heater

Rheem RTEX-18 18kW 240V Water Heater

Rheem’s water heaters are designed to provide long term dependable service, even under the harshest operating conditions, they deliver high-quality service.

This heater, unlike RINKMO Electric Tankless Water Heater, does not require a professional to install. And just like every other best electric tankless water for RV in this list, It comes with an advanced self-modulation system; so be assured that it can meet up with your hot water demand while on-road adventure.

Other than its ease of installation, Rheem RTEX-18 240V Electric Tankless Heater is threaded for easy replacement and has a digital temperature display.

What We Like:

  • It comes with an instruction manual for an easy and faster installation process.
  • Apt temperature control system.
  • Decent customer service.

What We Don’t Like:

  • Slow water flow is needed to maintain even water temperature.

6. Camplux Tankless Water Heater Electric

Camplux Tankless Water Heater Electric

Camplux Tankless Water Heater Electric

The Camplux tankless water heater electric is one of the most popular products because of its durability, efficiency, and ease of use.

Camplux Tankless RV Water Heater is no small contender, with a pressure release valve that makes it possible to drain water after use in winter which has landed it on our best electric tankless water heater for RV list.

This beast, like every other electric RV heater, has a safety mechanism that automatically shut it off when the temperature is too high. It also comes with a remote smart controller, hence you do not need to get close to the heater. – The remote controller has a built-in memory that can remember your favourite temperature.

What We Like:

  • It is less expensive compared to other brands, yet quality.

What We Don’t Like:

  • The wires inlet and connectors are too tiny.

Frequently Asked Questions and Answers

Here we’ve answered common questions on using the best tankless water heater, lifespan, hacks and tips. And you can as well make use of the comment section to ask us questions not included here or section of this blog post.

Can I Put an Electric Tankless Water Heater in an RV?

The short answer is yes, but there are a few things to consider before doing so. For starters, the weight of the unit may be too much for your RV’s electrical system to handle. You’ll also want to make sure that it has enough power running through its outlet and that any wiring does not exceed 15 amps.

If you’re unsure about whether or not your RV can accommodate this type of water heater, consult with a professional who specializes in designing homes for mobile living. They will know more about what kind of needs are necessary when setting up an RV for human habitation – something they do on a daily basis!

Can I put a Bigger Hot Water Heater in My Camper?

Ever wonder if you can put a larger hot water heater in your camper? I did, so I checked. It turns out that if you want to heat up the 40 gallons of fresh water on board, there are two common sizes for RV tanks: 18 gallons and 30 gallons.

You can’t just swap them out because they have different fittings. If you need more hot water than an 18-gallon tank will provide, it’s best to plan ahead by installing a new 30-gallon one when you purchase your RV or trailer. So, yes you can put a bigger hot water heater in your camper.

Is The 6-gallon Water Heater In RV Enough For a Shower?

A 6-gallon water heater can provide hot water for a shower, but you’ll have to wait a little longer than usual. The time it takes the tank to heat up is going to be about 3 minutes.

Can My RV Water Heater Be Replace With a Tankless One?

Tankless water heaters offer a great solution for those who live in small quarters or struggle to find space for an RV water heater. The trade-off is that they are more expensive but could save you money on your long-term utility bill. Should I replace my RV water heater with one of these?

A tankless design will give you unlimited hot showers without having to worry about running out of hot water, and even save some money by only heating the quantity of hot water you need. So, yes you can replace your RV heater with a tankless one if you can afford it.

How Long Does Hot Water Last in a 6-gallon Tank?

The answer to this question depends on how often you use your hot water. If you use it every day for an average of 10 minutes, then it will last about three days before running out.

Why Is My Tankless Water Heater Getting Too Hot?

The first thing worth checking is whether your thermostat is set properly. The dial should be pointing at “comfort” for the winter months and “warm” during the rest of the year.

If you’re still having problems after this, try turning off your heating system entirely for an hour before restarting it again (this will help flush out any impurities). And if all these fails, it is time to get a professional to check it out.

Is 140 Too Hot For a Water Heater?

There’s something to be said for hot showers. We all know that feeling of finally stepping out of the shower and wrapping yourself in a towel, ready to face the day. But what about when you step into a scalding hot shower?

You can’t help but run around frantically trying to find the handle, turn it down, or get out ASAP. It’s torture! Everyone has their own idea on how warm is too warm, but experts recommend keeping your water heater set between 120-140 degrees Fahrenheit (49-60 Celsius). You may think this is too cold for your liking – but just wait until winter comes along.

Can Turn Up the Water Heater In RV Make Hot Water Last Longer?

You might have heard the old wives’ tale that turning up your water heater will make hot water last longer. But does it? Nope! The truth is, high-quality plumbing fixtures and appliances like tankless water heaters can help you avoid wasting too much time waiting for hot water to arrive at your faucet.


No matter what your needs are when it comes to picking one out of the varieties of best electric tankless water heaters for RV out there, there’s always one that fits in. Although, there are cases you need to compromise, especially when you don’t have enough to get that RV water heater that tick all checklist of your ideal heater.

For someone who is on a shoestring budget, yet want an electric water heater that can stand the test of time, you won’t be making a bad decision getting an EcoSmart 11 Electric Tankless Water Heater, Ecosmart ECO 18 Electric Tankless Water Heater, Barbella Electric Hot Water Heater and Stiebel Eltron Tankless Water Heater. 

We hope you enjoy our article covering the best electric tankless hot water heater for your RV! Just getting started with RVing? Visit our RV resource page.

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