Replacement Water Heater for a Atwood GC10A-4E
Updated 10/22/2025 | Published 09/21/2025
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Question:
Looking for an ELECTRIC water heater to replace my Atwood model:GC10A-4E 94021 623640 10 gal BTU 10000 18”x18” Please send me the model that will seamlessly replace this and I will purchase it from you on Monday, Sept. 22nd. Thank you
asked by: Brandon G
Expert Reply:
Hey Brandon. To replace your GC10A-4E you'll need to use a gas and electric water heater or a gas only. There's no options for an electric only water heater.
The Dometic RV Water Heater item # DMC33RR, you were looking at, would work as a replacement size wise. However, it's a standard tanked water heater that only has a 6 gallon tank. You'll actually have less hot water and they don't make 10 gallon ones that fit your cutout.
Instead, I recommend upgrading to the Furrion RV Tankless Water Heater item # FR68SR. This tankless water heater can produce up to 144 Gallons of hot water per hour so no more short showers or long waits in between.
The Furrion item # FR68SR will fit easily in the cut out of your GC10A-4E because it is smaller at 12-5/8" wide x 12-5/8" tall x 19-1/4" deep compared to your Atwood's 16" tall x 15-1/2" wide x 20-7/8" deep. It includes a white 18" x 18" door.
What kind of trailer or RV do you have?
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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Jerred H.
10/22/2025
Hey Brandon, how did the swap to the Furrion tankless water heater go for your setup? Your feedback could really help others looking to replace their Atwood units.