Rheem MR50245 50 Gallon Tall Electric Non-Metallic Water Heater Residential

- Item #: BCI2143103

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Marathon Collection Residential Electric Non-Metallic Water Heater with Tall 50 Gallon Tank

The Marathon electric water heater. This water heater's main feature is its non-metallic tank. Why would you want one of these? To start, how about easy installation and service? Marathon's lightweight tank is easy to maneuver and position. The tank bottom is bowl shaped, allowing it to drain completely. Want a tank that is impervious to rust and corrosion? The seamless, blow-molded, polybutene tank delivers. Is it durable? This tank's unmatched strength comes from its multiple layers of filament wound fiberglass. Lightweight? Check. Reduce energy consumption? The Polyurethane insulation helps there. Tough? How about a tough outer shell of molded polyethylene that resists dents, scratches and salt air. Dip tube? Made of high temperature polysulfone. Brass drain valve? Try full-flow brass drain valve, recessed so it is out of the way of brooms and scrubbers. Temperature and pressure relief valve? Standard. Even the heating elements benefit from Rheem's years of water heater experience. The upper heating element is thermally fused to protect against dry-firing while the titanium lower element brings superior resistance to lime build-up. Rheem brings all this together and backs it up with a limited lifetime warranty that's "...warranted not to leak as long as you own your home."* And while it may not be bullet proof, the man a steel could retire knowing there's a superhero in your home.


  • Non-metallic polybutene tank
  • Unmatched tank strength from layers of filament wound fiberglass
  • Recessed brass drain valve
  • Tough polyethylene outer shell
  • Polyurethane insulation
  • Thermally fused upper element
  • Titanium lower element
  • Pipe wrap energy saving kit included
  • Temperature and pressure relief valve
  • Standard replacement parts


  • Tank Capacity: 50 Gallons
  • Energy Factor: 0.94
  • Performance:
    • First Hour Rating: 61 gallons
    • Recovery at 90 degree rise: 20 Gallons/Hour
  • Warranty: Lifetime Limited Tank - 6 Year Limited Parts

Rheem has been manufacturing water heaters since the 1930's, with coast to coast distribution by 1936. Their product offerings cover commercial and residential heating, cooling, solar water heating systems, conventional storage-style water heaters, tankless water heaters, replacement parts and accessories. Rheem's manufacturing facilities are ISO 9001 certified, with four facilities in the United States. Choose an industry leader that is respected for reliability. Choose Rheem.

Additional Rheem Links

Our SKU: Rheem MR50245

This product is listed under the following manufacturer number(s):

  • Rheem MR50245

*Denotes a finish or option that has been discontinued

Rheem MR50245 Product Specifications

Specification Sheet
Installation Sheet
ANSI Approved Yes
Capacity (Gallons) 50
Diameter 23.5
Energy Factor .94
First Hour Rating 61
Fuel Type Electric
Recovery 20
Series Marathon
Shipping Weight 100
Tank Height 62.75
Tank Style Tall
UL Listed Yes
Voltage 240
Warranty 6 Year Limited Parts, Lifetime Limited Tank
Water Connection 3/4"
Water Connection Center to Center 5.75
Water Connection Height 66.75

Installation Resource Center

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