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Why We Love Our Truma AquaGo On-Demand Tankless RV Water Heater

For most people, the water heater is an afterthought. Something you take for granted – that is, until it stops working. For RVers, the water heater makes a big difference to the camping experience. Running out of hot water or waiting for it to heat up just gets annoying. Fortunately, we found the best solution: the Truma AquaGo Hybrid On-Demand Propane water heater.

As an on-demand water heater, this unit is designed to provide an inexhaustible supply of hot water. In RVer terms, that means LONG HOT SHOWERS!​ Join us as we explain why we love this Truma Water Heater, even after 5 years of use!

A New Kind of RV Water Heater

We discovered Truma at the 2018 Florida RV Supershow in Tampa. We had noticed all of these new RVs with big blue “Truma” stickers everywhere and wondered what the big deal was. Now, Truma is everywhere! Their high-efficiency appliances can be found throughout the new RV market, as well as in the after-market as well. Their most popular products include the AguaGo, the Combi, and the VarioHeat. They also recently introduced a new quiet and efficient air conditioner called the Aventa.

Who Is Truma?

Truma is a German company that came to the USA in 2014. However, it has been around as a company since 1949. In Europe, Truma products can be found in 90% of RVs. Fun fact: they are named after President Truman who implemented the Marshall Plan after WWII, which benefited Truma’s founder and funded them enough to get off the ground.

You can learn more about their company, background, and an overview of their most popular products by watch the following video below. We sat down with Billy DiDonato from Truma to ask him some questions about the company’s origins and products:

Introducing Truma and the AquaGo Hybrid On-Demand Water Heater

Installing the Truma Aquago Water Heater (Video)

Unless you buy a new unit with the Truma AquaGo already installed, getting it installed is part of the ownership experience. We replaced our 12-gallon Suburban water heater with the AquaGo Comfort at their Lakeland, Florida service facility in March of 2018.

In the video below, we show what it was like getting it installed aftermarket (and having our old water heater removed!). We were very pleased with the professionalism and quality of the install.

Installing the Truma AquaGo On Demand Water Heater in our RV

Truma AquaGo Comfort Plus Review (Videos)

After several months of using the Truma AquaGo Comfort Plus Water Heater, we shared our thoughts and experience in the videos below:

Truma AquaGo On-Demand RV Water Heater - Overview and Thoughts
Truma AquaGo On-Demand RV Water Heater Review

How Does the Truma AquaGo Water Heater Work?

The Truma AquaGo water heater is a hybrid on-demand RV water heater that operates on LP gas (propane) and a small source of 12V DC power to run the “brains” of the unit.

The Truma water heater only heats the water you use, which is the advantage it has over standard on-demand units that have a small tank to mix and pre-heat the water. Conversely, other tank water heaters hold 6-12 gallons of water in them all the time. As a result, you’re having to heat all that water up to get hot water. Plus, you’re constantly carrying that extra 50-100 pounds of weight around with you.​

From our experience, we found this technology works very well to minimize temperature spikes, a common problem with other tank and on-demand water heaters. Instead, it provides consistent hot water quickly. While we never had a temperature issue with our Suburban Water Heater, we always had to wait 15-20 minutes for it to heat all the way up before we could use it. Then, we would feel the need to try and use all the water up. As a result, we would try to both take showers and wash the dishes as to not waste the energy.

Now, we only use what we need, when we need it, which has given us back lots of flexibility. Also, we don’t have to wait until the sink is full of dirty dishes to wash them!

AquaGo Comfort Plus “Eco” & “Comfort” Modes

With the Comfort Plus model we have a control panel to click the AquaGo into different modes.  In “Eco” mode, the unit operates like a standard, tankless water heater where the heating unit starts up when water starts flowing. This takes a little bit of time to heat up – maybe about 15-20 seconds – and then you get hot water at your faucet. It saves propane but uses a bit more water.

In “Comfort” mode (2nd option), the small tank in the unit heats water to above 102 degrees Fahrenheit prior to the ask for water. Therefore, it’s already hot when you turn the faucet on! The heating of this tank takes very little time. While, this uses more propane (a little), it saves water usage, which is great if you’re out boondocking.

truma water heater control

“Winterization” and “Clean” are also options. You’ll use the “Winterization” option for operation with the electric antifreeze kit. “Clean” starts an automatic decalcification process that is one-of-its-kind in the industry! We cover these options in a bit more detail down below.

AquaGo Pros and Considerations


First, the Truma AquaGo Water Heater saves us RV weight. Our 12-gallon hot water heater carried an extra 96 pounds of water around with us everywhere. Also, this water heater is energy efficient while still providing power at 60,000 BTU.

Next, the on-demand function means that we have an inexhaustible hot water supply. The innovative hybrid tank design allows for instant hot water in Comfort mode. No more waiting for the heating unit to start up.

One safety advantage is the Truma RV water heater eliminates the scalding issue present with other on-demand water heater models. It provides a constant stream of hot water, even down to low flow rates.

As far as maintenance, the Truma water heater is easy with simple modes, automatic cleaning cycles, and an easy drain lever for winterization. The innovative decalcification process cleans and increases heater longevity.

The Truma Comfort Plus model operates in temperatures down to -4 degrees Fahrenheit as long as your RV is designed for winter conditions and water pipes aren’t iced. Additionally, built-in safety features monitor flame, low-voltage, over-voltage, overcurrent, flue fan, and water temperature.

truma water heater on RV


However, the Truma AquaGo does have a few drawbacks. These were some of our concerns before making the switch. So, we address each one separately in the sections below. Keep reading to learn how we mitigated these drawbacks.

First and foremost, the Truma AquaGo does not have an electric heating option – only a propane one. While it requires 12V DC electrical power to run its electronics, there’s no option to switch the heater completely over to DC or AC power.

Second, the Truma AquaGo Basic model cannot operate in frost conditions (below 45 degrees Fahrenheit).

Third, this water heater isn’t available as DIY install. Unfortunately, dealerships tend to charge a lot for installation. We recommend going to a Truma Service Center if you can!

The total cost is also quite expensive. And finally, there is a slight noise it makes when it is heating and stirring the tank.

Addressing the Considerations

While the “pros” list is much longer, let’s take a closer look at these “considerations” and fully explain what they mean for your RV water heater experience:

No Electric Heat Option – Doesn’t Matter!

​Although the unit doesn’t have an electric heating option like our former Suburban tank water heater had, using it on propane has proven to be far more efficient than using our old one on electricity. You just need to make sure you always have propane if you want hot water (typically, not hard to do).

Frost Temperatures – Stay Vigilant

The Basic Model does not have the internal thermostat that the Comfort and Comfort Plus models have that automatically switches on the burner and circulation pump whenever the temperature in the unit is below 41 degrees Fahrenheit.

If you may experience frost conditions while RVing, we recommend bumping up to the Comfort or Comfort Plus models to reduce the risk of damage to the unit in these cold temperatures.

DIY Installation Not Available

​Truma does not allow the DIY install of these units. This is to ensure that the unit is installed properly.

We’ve heard from our followers that quotes for the Truma AquaGo installation from dealers can be high. The Truma AquaGo Basic retails (at the time of this blog post) for $1099 and the Comfort model retails at $1299.

Installers may charge extra installation fees for the access door color/size desired or needed, as well as a gas connection kit. All costs are higher in Canada. The cost of labor depends on the dealer and how long it takes to install the product. Typically, it takes about three hours to install. Truma says they have found the average hourly charge for dealers is around $120.00 per hour. (subject to change)

Cost is more – but might be worth it for you

The price point of the Truma is a bit higher that your standard tank water heater. At $1100-1300 plus installation, it isn’t the cheapest on-demand RV water heater option on the market. Standard RV tank water heaters cost less than half as much, and other on-demand heaters can be found as low as $800 or less.

However, before you buy, always do your research. Consider safety and quality of life aspects. You’ll also save money on propane in the long run.

Truma Water Heater Noise in “Comfort” Mode

​The AquaGo makes some noise when it is in operation. The most noticeable sound is when it is on the “Comfort” setting and water is not currently being used. It makes a small electronic whirring noise that can be heard when it is quiet.

If you’re a light sleeper like Tom, this is a concern. Therefore, we make sure to turn the unit back into “Eco” mode before we go to sleep at night.

Maintenance and Cleaning

Maintenance and cleaning are a breeze, and we’ve had no problems with the unit for the last 5+ years. You may occasionally need to clean the water inlet filter. Luckily, this is a simple and easy process with the AquaGo. Turn off the unit and the water to it (water pump if not hooked up), drain the water with the drain lever, and pull out the water inlet filter to inspect and rinse.

Why Do You Need To Clean Your Truma RV Water Heater?

Like all water heaters, over time mineral deposits called scale can build up in the unit. If you have the AquaGo Basic, you’ll have to contact a Truma certified service partner to have this done.

If you have the AquaGo Comfort model, you can easily do this yourself with the “Clean” Mode on the unit and using the Truma water heater decalcification tabs. You should run the cleaning process after hot water consumption of approx. 1585 gallons or about every year.

You can also check out the video below to watch on our AquaGo decalcification experience!

How to Clean and Decalcify the Truma AquaGo On-Demand RV Water Heater

Winterizing the Truma AquaGo

We winterized our Truma AquaGo when we put our RV in storage during the Go North expedition and every time we’ve left the RV for extended periods in cold weather.

Winterizing the Truma AquaGo is really easy. All we had to do was pull the lever and drain out the small tank. Next, we emptied the tank into a bucket and stored the filter inside the housing. The whole process took about five minutes.

*Be sure to follow the directions closely, as any damage caused by freezing or an unsuitable winterizing fluid will not be covered by warranty.*

You can watch the process in Go North Episode 3 at the 12:40 mark:

RV Downsizing: Packing the Lance 1172 Truck Camper & Hitting the Road! | Go North Ep 3

Say Goodbye to Short, Sad, RV Showers and Hot Water Anxiety!

The Truma water heater was a game-changer for our full-time RV living comfort. No more waiting and all the hot water we wanted (at least when we are hooked up to water!)

We don’t even feel bad about using more hot water. This RV water heater is just that efficient.

Overall, we found using the AquaGo to be a very pleasant experience! Its operation is very similar to a conventional home water heater. You turn it on and hot water comes out, with the exception that scalding water never does.

Also, we save lots of propane with this unit and absolutely love not having to wait for water to heat up. 

One time, we got back to our stored RV and found it only had an inch of propane in the tank. We decided to see how long it would last heating water only. The result? It took two people using it full-time for over a month before it ran out! We have been extremely satisfied with this unit and think it has been one of our best RV upgrades ever.

Truma AquaGo Rebate Coupon

Don’t forget your Rebate Coupon! Get a $50 back on your Truma AquaGo purchase.

How to earn:

  1. Register your warranty HERE on Truma’s website.
  2. In the Promo Code section, use this code: DLE60C-28110003 
  3. Receive a $50 Debit Card rebate from Truma! We will receive one, too : )​

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About Tom Morton

Tom, a Pacific Northwest native, is our technical genius. Born in Washington and raised in Alaska before settling in Michigan. He's the man who keeps our operation running, both figuratively and literally.

With a background in Electrical Engineering, Tom specializes in RV solar systems and lithium batteries. He made history as the first documented individual to use a Tesla battery module as an RV battery. Tom has personally assisted countless RVers with system installations and has educated thousands more through his videos and articles.

Cinematography is another of Tom's passions, showcased in his work on the Go North series. You can see his camera skills on display in The RVers TV show on Discovery Channel and PBS where he also stars as a co-host.

Tom's mechanical expertise extends beyond RVs to boats, planes, and all things mechanical. He's renowned for taking on maintenance and repair projects single-handedly and is often spotted underneath RVs, making him the technical backbone of our endeavors.

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George T

Tuesday 13th of June 2023

I currently have a on demand tankless, but find it takes quite some time to get hot water to my outside shower....I assume pushing out the cold water in the lines. Does the AquaGo solve that issue by circulating the hot water or some other solution?

Mortons on the Move

Monday 19th of June 2023

Some units circulate hot water, but they are factory only. However the truma does have the mixing tank that keeps water hot so it functions more like a standard water heater in operation but has all the benefits of an on demand.


Friday 1st of October 2021

I am trying to get a truma Combi Comfort Plus for my Four winds camper. Truma won't sell it - they only supply the systems to new campers to be build in as the first heating systems. Where can I purchase the truma Combi Comfort Plus for me to install it? Does anybody know? Alternativly, which Truma Dealer will install it for me? Thank you very much! Peter

Mortons on the Move

Thursday 3rd of March 2022

Hi Peter, the Combi unit is not available for after-market purchase. The Aqua-Go is, and that would be our recommendation to go with. Any Truma dealer will do the Aqua-Go. We wish both the Combi and the Vario Heat were available for aftermarket purchase. As far as we know, they don't allow any self-installs either.


Saturday 31st of July 2021

Just rewatched this, as we're stopping by Elkhart in October to have an AquaGo Comfort installed in our Phaeton, replacing our Suburban water heater. Great stuff. Our Suburban heated the water quickly but it was only good for one shower and then we had to wait a while for the next person to shower. We're really looking endless hot water.

Mortons on the Move

Wednesday 11th of August 2021

Hope you enjoy your new Truma AquaGo as much as we enjoy ours!

Tara Kelly

Friday 26th of February 2021

I had my Truma Aqua Go Comfort installed 2 days ago and have yet to get "hot" water. Its warm but not even close to hot. Truma Service asked if I had a bypass valve open the outdoor shower... checked and it was not on. Has anyone encountered this issue and found the fix?

Mortons on the Move

Saturday 27th of February 2021

Hmm, the outdoor shower issues is a common one, but if that's not the case you could check the bypass valves for the heater... They should have installed bypass valves behind the water heater for winterizing. Its a set of 2 valves with a cross tie hose between them. The both need to be fully open to the water heater or they will mix in cold water through the winterizing line. I suppose it would be possible to have a leaking valve too but they would both need to leak for that to happen. We see 120 degrees out of the Truma but it can cool in the longer runs and will take a bit to get hot.

Bobby Walker

Wednesday 24th of February 2021

This is a really helpful post, thanks a lot for sharing your knowledge. I am considering buying one.

I personalty prefer Gas powered-water heater for RV for its efficiency. I love it specially for its short time Winterizing process. But a little bit disappoints for its higher installation cost.

Mortons on the Move

Thursday 25th of February 2021

Glad you found it helpful! Thanks for reading!