How To Install The Electric Tankless Water Heater In Your RV?

Electric tankless water heaters are a convenient way to have a hot water supply while camping in an RV, but the limited duration of the water in the tank can be a problem. Replacing an ordinary tank water heater with an electric tankless one can provide an on-demand, non-stop hot water supply. Install The Electric Tankless Water Heater In Your RV can ensure that a lack of hot water does not ruin your RV adventures.

How To Install The Electric Tankless Water Heater In Your RV?

Take control of your hot water supply on the go with this easy guide to installing an electric tankless water heater in your RV.

Disconnecting water and electricity connection:
Before installing a new tankless water heater, you must remove the older water geyser. As we started the procedure it’s necessary to make sure that we are turning off our propane supply. We want to make sure that we are turning off our electrical and water supply. This is necessary to turn off these supplies so that, we may avoid a big mess and damage while exchanging our systems.
Removing the old unit:

Once we have turned off all of our propane, water, and electricity supplies, now we can start disconnecting and pulling off our old unit. You can use a screwdriver or drill machine for unfastening the bolts. Now cut around the seal where the old water heater is present, you can cut it easily by using an electric saw or electric cutter. After cutting the seal gently pried around the hole to pop out the old unit. Remove the older unit at this point.

We can go ahead and start disconnecting:

After the successful removal of the old unit, we have a hole for the installation of a new tankless water heater. It’s good to scrape off all the old sealers that were present on the sides. We can use a seal-removing solution to remove the residues of the sealer and stains.

Measuring for new unit:

On the drain line, we want to measure our hole to make sure that either our opening is the proper size to fit in the new unit. Once you have the right size hole for your new instalment, you can go ahead and slide the unit into place. In case the hole is greater than the newly installed tankless water geyser then before going ahead to the next step we will caulk around it to fill the empty spaces and gaps.

Install door seal:

After covering all the gaps, we will use our door as a seal on the tankless electric heater. We position our door and after we put it in place, we will line up the holes in the door. These holes should match the holes in the water tank. Screw that into place, we secure the holes well. Then we screw this door around on the outside to secure it to the trailer.

Applying a bead of silicon:

After securing the door go ahead to the next step and put a bead of silicon around the door. So, that you can seal it against any kind of moisture and water from outside.

Making electricity connection:

We will move to the next step which is the electricity connection-making step. We will connect the tankless water heater wires to RV electrical connections, after this, we will do a water connection with the tank and set the control panel.

Temperature setting:

Before setting the temperature, we will mount the control panel to the base. We will mount this control panel in an accessible place. After this, we will be able to turn it on and change the temperature according to our requirements.


After setting the temperature tankless instant water heater is as easy to use as just turning on the hot water and it’s on and working. We are using this tankless water heater for 15 days while travelling and camping. But this product has not still disappointed us at all. It’s much better than our older water heater.

Features of tankless water heater that makes it shine:

  1. Energy efficiency: Tankless water heaters only heat water as needed, rather than constantly keeping a large tank of water hot. This saves energy and reduces your energy bills.
  2. Unlimited hot water: With a tankless water heater, you can have an endless supply of hot water, as it heats the water on demand. This is especially useful for households with high hot water demand, such as large families or those with frequent guests.
  3. Compact size: Tankless water heaters are much smaller and more compact than traditional tank water heaters, making them a great option for small homes or tight spaces and RVs.
  4. Long lifespan: Tankless water heaters tend to have a longer lifespan than traditional tank water heaters, which means you may not need to replace them as often.
  5. Environmentally friendly: Tankless water heaters produce fewer greenhouse gas emissions than traditional tank water heaters, making them a more environmentally friendly option.


Can I replace my RV water heater with a tankless one?

Yes! placing a tankless water heater in your RV is always a better option. It is a space and energy-saving product due to the absence of a storage tank for hot water, and on-demand water supply. The best thing about this water tank is you can enjoy a luxury hot shower whenever you want it.

Can I install an electric tankless water heater myself?

Well, it’s not a tough job to install a tankless water heater if you have some experience regarding electricity appliance adjustments. But it's not a job for inexperienced yourself. There is a variety of tankless water heaters sizes and styles with different installation techniques that a professional can know best.

Why do RVs not use tankless water heaters?

Although there are lots of benefits while using tankless water heaters that are greater than their drawbacks, still RV manufacturers do not use tankless water heaters as they are higher in the cast, a bit complicated to install, and lower in output


To Install The Electric Tankless Water Heater In Your RV , follow these steps.

  • Disconnecting the water and electricity supply before installing a new tankless water heater.
  • Removing the old unit and measuring for a new one.
  • Installing the door seal and applying a bead of silicon.
  • Making electricity connections and setting the temperature.
  • Using a tankless water heater while travelling and camping.

Hope this article will help you understand step by step installation of the tankless water heater. Experience the convenience and energy efficiency of a tankless water heater in your Rvs, and never run out of hot water again.


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