Discover a World of Innovative Comfort
Did You Know?
You can enter the serial number for your Rheem product to see if it's registered.
Standard gas tank water heaters last an average of 10 years, and standard electric water heaters may last a bit longer. However, if you’re looking for a water heater that can last longer, would you believe that there is a water heater you won’t need to replace?
A Rheem® Marathon® Electric Water Heater will be the last water heater you’d need to buy for your home. If you register your product online, its 10-year warranty is upgraded to lifetime at no additional cost.
Its unique construction not only gives it a unique capsule-like shape, it brings benefits. The unit has a seamless, blow-molded polybutene inner tank that will not rust or corrode. The polyethylene outer tank resists dents, scratches and salt air.
Whether you need a little hot water or a lot, Marathon has you covered.
See Marathon from the inside.
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