Specifications
Element/Electrical Data
Warranty Information
Installation with Heat Pumps
Solar Applications
High Temp. Applications
Parts Listings
Trouble Shooting Guide
Tank Draining
Tank Cleaning
Testing Electric Components
Thermal Expansion





The Marathon water heater is the only
water heater to be built to last a lifetime!
Residential Warranty
YOUR MARATHON TANK IS WARRANTED NOT TO LEAK FOR AS LONG AS YOU OWN YOUR HOME*…
Marathon offers this no-leak promise because of its superior, non-metallic PermaGuard tank construction - a seamless blow molded polybutylene tank with a filament wound fiberglass outer tank for maximum strength. Superior performance, high-efficiency, and low operating cost…for a lifetime*!

* See Warranty Information Brochure for complete warranty information

Agricultural, Business and Utility Lease Warranty
THE MARATHON WATER HEATER IS THE MOST DURABLE WATER HEATER AVAILABLE FOR HIGH TEMPERATURE, EXTREME USE APPLICATIONS.
When you buy a Marathon water heater for these demanding applications, you are buying long term efficiency and peace-of-mind. Whether you are dealing with the high moisture and demand of agricultural applications, temperature extremes of commercial sites, or the multiple installations of a lease program, the Marathon is the long distance performer. With a proven track record in these environments, Marathon water heater's blows away the competition with a 10 year warranty.*

* See Warranty Information Brochure for complete warranty information

Parts Warranty
Component parts of the Marathon water heater such as the thermostats and elements are warranted for a period of six years from date of manufacture for all residential applications, and for three years from date of installation for agricultural applications. *

* See Warranty Information Brochure for complete warranty information