Marathon Water Heaters

Rheem Marathon® Electric Water Heater
Durable, lightweight, and warranted not to leak as long as you own your home*
Palmetto Electric is proud to carry Marathon Water Heaters. It’s the best water heater you can buy, and with a lifetime warranty*, it’s the last one you will ever have to buy!

marathonwaterheaterimageNon-metallic tank features

  • Seamless, blow-molded, inner tank – impervious to rust and corrosion
  • Thick foam insulation helps reduce energy use
  • Tough molded outer shell resists dents, scratches, salt air and cleans easy
  • No anode rod means no smelly water that can sometimes occur in water heaters.


  • .95 EF
  • Well insulated for reduced standby heat loss
  • Pipe wrap energy saving kit included to achieve maximum energy savings


  • 50, 85, 105 gallon models
  • FHR: 52-104 gallons, based on gallon capacity
  • Recovery rate: 20 GPH

Easy installation & service

  • Light weight tank is easier to install.
  • Bowl shaped tank bottom drains completely.


  • Lifetime limited warranty on tank and 6 years on parts**See Residential Warranty It’s lifetime warranty* means this tank is built to last for as long as you own your home.
  • Effective November 1, 2015, MHD and MR models installed in residential, single family dwelling application must be registered within 90 days of installation to qualify for our Limited Lifetime Warranty. If the water heater is not registered within 90 days of installation, it is automatically covered by a 10-year Limited Warranty.
    How to Register
    In order to register for a Limited Lifetime Warranty, simply complete the online form with the tank serial number and your contact information.
    To register please visit

Marathon Spec Sheet
Marathon Use & Care
Grid-Enabled Water Heater Notice
H2O Select

Let Palmetto Electric install a water heater through our Turn Key option.