Marathon Water Heater
CTEC no longer sells Marathon Water Heaters.
Marathon Warranty Process
First please call 1-800-321-6718 and press option 1.
After discussing the warranty issue with the representative, you will receive a call number.
Then contact the CTEC Fredericksburg Headquarters office at 997-2126 or toll free at 1-800-900-2832 and give us the call number.
From there, CTEC will confirm the call number and confirm the replacement of parts or tank.