Can Tankless Water Heater Replace Water Heater With Tank
Updated 10/30/2025 | Published 09/28/2025
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Question:
Can you replace an existing tank water heater with a tankless in an RV if so what is needed to make the conservsion?
asked by: Brian F
Expert Reply:
Hey Brian! You can definitely replace your existing water heater with a tankless water heater. I recommend the Furrion RV Tankless Water Heater as a replacement. This will use your existing gas and plumbing lines so the only thing you need to do is measure your cutout. The Furrion requires a 12-3/4" to 12-13/16" wide x 12-5/8" to 12-3/4" high x 23-1/2" deep cutout for installation. You can choose from the following based on door color/size:
-Furrion RV Tankless Water Heater - Gas - Auto Pilot - 60,000 BTU - 16" x 16" Door - Black # FR32TD
-Furrion RV Tankless Water Heater - Gas - Auto Pilot - 60,000 BTU - 16" x 18" Door - Black # FR92TD
-Furrion RV Tankless Water Heater - Gas - Auto Pilot - 60,000 BTU - 18" x 18" Door - Black # FR42TD
-Furrion RV Tankless Water Heater - Gas - Automatic Pilot - 60,000 BTU - 16" x 16" Door # FR98SR
-Furrion RV Tankless Water Heater - Gas - Automatic Pilot - 60,000 BTU - 16" x 18" Door # FR48SR
-Furrion RV Tankless Water Heater - Gas - Automatic Pilot - 60,000 BTU - 18" x 18" Door # FR68SR
What water heater do you have now?
(click to enlarge)
Product Page this Question was Asked From
Dometic RV Water Heater - Gas/Electric - Auto Pilot - 120V - 10K Btu - 6 Gal - Black Conversion Kit
- RV Water Heater
- Standard Water Heater
- Gas and Electric
- 10000 Btu or Less
- 120 Volts
- 6 Gallon Tank
- 12-3/4L x 12-3/4W x 19-7/8D Inch Cutout
- Black Door
- Dometic
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Robin H.
10/30/2025
Hey Brian, how did the swap from your Dometic water heater to the Furrion tankless unit go? Did the existing gas and plumbing lines line up the way you expected? Your update could make it easier for others planning the same conversion.