• Easy to Install and Service: The Rheem Marathon is lightweight for one-person, low-cost installation and resourcefully designed for quick maintenance, should problems arise – It’s bowl-shaped tank bottom drains completely and requires no anode rod replacement
  • Designed for Durability and Cleanliness: The Marathon’s seamless, blow-molded polybutene inner tank will not rust or corrode like its metallic counterparts, while the outer tank resists dents, scratches and salt air – This tank provides the best durability, the ability to withstand the harshest environments and eliminates smelly water due to chemical reactions
  • Saves You Money: Save on your energy bill with the Marathon’s 2.5 inches of polyurethane foam insulation – It minimizes stand-by heat loss, allowing only 5-degree (F) loss in 24 hours
  • Yours for Life: Many homeowners replace a water heater every 10 years – Instead, the Rheem Marathon’s durable design is backed by a free warranty upgrade from 10 years to lifetime, if you register online*
  • Built to Last:
    • Brass union connections provide easy installation or re-installation
    • Polyurethane insulation reduces energy consumption
    • Rugged polyethylene jacket resists shipping damage and won't rust
    • Oversize element covers for easy sediment removal
    • Recessed brass drain valve
    • Factory installed T&P relief valve and vacuum relief valve
    • Water-tight outer jacket delivers dependable service in challenging environments
    • Thermally fused upper element provides protection against dry-firing
    • Titanium lower element means superior resistance to lime build-up*
    • Bowl-shaped bottom for easier, more complete draining
    • *MHD models offer titanium upper and lower elements

*Tanks manufactured after November 15, 2015 must be registered for Rheem to honor the warranty. Second, the Warranty is transferable to a second owner but from that point, the tank is only covered under the Rheem Warranty for 10 years from date of transfer.