Best Replacement Water Heater for a Atwood GC6AA-10E  

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Expert Reply:

Hey Gary. Atwood was bought out around 10 years ago by Dometic and then discontinued. While there's not an identical replacement for your Atwood GC6AA-10E water heater we do have a comparable option size wise. It is the Dometic RV Water Heater item # DMC74FR.

The Dometic item # DMC74FR has a 6 gallon tank, produces up to 12 gallons per hour, and fits cutouts measuring 12-3/4" tall x 12-3/4" wide x 19-7/8" deep. The 15" x 15". You will also need the Replacement Door for Dometic Water Heater item # DMC58FR.

If you would like to upgrade to a tankless water heater, I highly recommend the Furrion RV Tankless Water Heater item # FR92TD with a 16" x 18" Door or item # FR42TD with a 18" x 18" Door. This unit is capable of producing 144 gallons of hot water making it virtually endless. The Furrion fits a cutout measuring 12-3/4" to 12-13/16" wide x 12-5/8" to 12-3/4" tall x 23-1/2" deep so you will need to make sure you have enough space if you want to go this route.

If you enjoy taking long hot showers or have multiple people with you, I recommend going with one of the Furrion tankless options item # FR92TD or item # FR42TD.

What kind of motorhome or trailer do you have?

You can add this information and any other questions you have where it says Reply to Jerred H and I'll be happy to answer them.

expert reply by: Jerred H

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Dometic
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Furrion
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Gary I.

11/2/2025

I have a 2022 Jayco Eagle. 26 ft. I will have to measure my opening. I am not interested in the tankless heater. I will get back with you. Thanks

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Jerred H.

11/2/2025

@GaryI Sounds good! The Dometic RV Water Heater item # DMC74FR is going to be the way to go then!

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