There are water heaters that you can use to replace the Atwood GC6A-7, since they are no longer in business, a direct replacement isn't available. As such, the best option I can recommend is to upgrade to a tankless heater, the Furrion RV Tankless Water Heater - Gas - Automatic Pilot - 60,000 BTU - 16" x 16" Door # FR98SR. view full answer...