Marathon® non-metallic electric water heaters are durable, lightweight, and warranted not to leak as long as you own your home

Non-metallic Tank Features
  • Seamless, blow-molded, polybutene tank –impervious to rust and corrosion
  • Multiple layers of filament wound fiberglass give the tank unmatched strength
  • Polyurethane insulation helps reduce energy consumption
  • Recessed drain valve is out of the way brooms and scrubbers
  • High temperature polysulfone dip tube
  • Tough molded polyethylene outer shell resistsdents, scratches, and salt air
  • All plastic tank eliminates the need for an anode rod
  • Efficiency for 30 to 100-gallon models
  • .92 - .93 UEF
  • Well insulated for reduced standby heat loss
  • Pipe wrap energy saving kit included to achieve maximum energy savings
  • Performance for 30 to 50-gallon models
  • FHR: 41 - 85 gallons, depending on model
  • Recovery: up to 21 GPH at a 90° F rise**
  • Easy Installation & Service
  • Marathon’s lightweight tank is easier to maneuver and position
  • Bowl shaped tank bottom allows complete sediment draining
  • Water tight grommets keep out over-head moisture and condensation
  • Plus…
  • Thermally fused upper element provides protectiona gainst dry-firing
  • Titanium lower elementf or superior resistance to lime build-up
  • Full-flow, brass drain valve
  • Temperature and pressure relief valve
  • Low lead compliant
  • Standard replacement parts
  • Specifications

    • The most durable electric water heater ever made
    • High efficiency design and a lightweight tank that won't corrode
    • 30, 40, 50 and 100 gallon capacities

    Energy Guide Details


    ElectricAHRIULCSALEED Points = 1




    Residential Applications

    Lifetime limited warranty on tank and 6-years on parts* 

    Commercial Application

    5-year limited tank warranty and 1-year on parts†

    *Warranty is provided to original customer in a residential application after online product registration is complete. Registration must be completed within 90 days of installation. See Warranty Certificate for complete information

    † See Warranty Certificate for complete information