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Marathon Point-of-Use 20 Gallon Electric Water Heater with Limited Lifetime Warranty

Model # MR20120
Marathon Point-of-Use
Marathon Point-of-Use

Marathon Point-of-Use 20 Gallon Electric Water Heater with Limited Lifetime Warranty

Model # MR20120
  • Featuring the same unique design as the Marathon, but in smaller capacities
  • Ideal for condos, cabins and light-duty commercial applications
  • 15 and 20 gallon capacities


Marathon Point-of-Use non-metallic electric water heaters are durable, lightweight,easy to install and offer a longer warranty

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 and standby heat loss
  • Recessed drain valve is out of the way of brooms and scrubbers
  • High temperature polysulfone dip tube
  • Tough molded polyethylene outer shell resists dents, scratches, and salt air
  • All plastic tank eliminates the need for an anode rod

Easy Installation & Service

  • Marathon point-of-uses lightweight tank is easy to maneuver and position
  • Bowl shaped tank bottom allows complete sediment draining
  • Water tight grommets keep out overhead moisture and condensation
  • 3/4-Inch inlet and outlet connections
  • Built for applications where larger water heaters won't fit, such as apartments,recreational property, and restrooms in offices and commercial buildings

Element Wattage and Voltage

  • 15 and 20-Gallon with a 2,000 watt element and 120-voltage; 20-gallonwith a 3,000 watt element and240-voltage


  • Thermally fused element to protect against dry-firing; low watt, density for long life
  • Full-flow, brass drain valve
  • Temperature and pressure relief valve
  • Low Lead compliant
  • Standard replacement parts

Product Info

Product Depth (in.) 23.5"
Product Height (in.) 30.5"
Product Width (in.) 23.5"
Fuel Type Electric
Voltage 120
Kilowatts 2000
Install Location Indoor
Primary Warranty LLW
Max Single Shower Minutes
Number Of Back To Back Showers
Tank Capacity 20
Primary Warranty LLW

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