Furrion RV Tankless Water Heater With Black Door for Grand Design Momentum 21G
Updated 11/03/2025 | Published 01/03/2025
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Question:
what best furion tankless water heater replacement for momentum 21g with a 6 gallon tanks and black door
asked by: Bill R
Expert Reply:
Hi Bill; all of the Furrion RV Tankless Water Heaters like the # FR92TD are the same with the exception of the door size. This water heater fits cutouts that are 12-3/4" - 12-13/16" wide x 12-5/8" - 12-3/4" tall with a minimum depth of 23-1/2". You will need to choose the correct one based on the door size you need. We have the following available:
-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
Product Page this Question was Asked From
Furrion RV Tankless Water Heater - Propane - Auto Pilot - 60K Btu - 16" x 18" Door - Black
- RV Water Heater
- Tankless Water Heater
- Propane
- 55001 - 66000 Btu
- 12 Volts
- 12-3/4L x 12-5/8W x 23-1/2D Inch Cutout
- 12-5/8L x 12-5/8W x 19-1/4D Inch
- Black Door
- Furrion
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Robin H.
11/3/2025
Hey Bill, did you end up finding the right Furrion tankless water heater and door size for your Momentum 21G? Knowing which one fit best could really help others trying to replace their 6-gallon tank setup.