Batsome Report post Posted January 17, 2014 I have a 10 gal Atwood water heater model number GC10A-4E that only heats to warm water. I tried both electric and propane with same result so I assume it is the thermostat. Any help would be appreciated. Share this post Link to post Share on other sites
bomel Report post Posted January 18, 2014 Check your outside shower valve and the bath shower valve to make sure they are off at the valve and not at the head. If they are on it lets the hot and cold mix giving you warm water. Share this post Link to post Share on other sites
desertdeals69 Report post Posted January 18, 2014 Check the tank temp with a infrared thermometer to see if the water is indeed hot. Share this post Link to post Share on other sites
Batsome Report post Posted January 19, 2014 Thanks bomel, it was the outside shower allowing cold water to mix. Problem solved. Share this post Link to post Share on other sites
