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Marathon Water Heater  
The Marathon electric water heater features a technologically advanced design that offers superior efficiency and is guaranteed not to leak for as long as you own your home. The tank is made of a seamless Polybutylene that will never rust or corrode and is wrapped in 4 inches of Envirofoam® insulation. The inside is designed with a bowl-shaped bottom and an offset drain, creating a whirlpool effect that prevents sediment buildup. It’s clearly the most durable water heater made, and has a warranty to match.

Features of the Marathon Water Heater:

• Seamless blow molded Polybutylene tank for a corrosion free life
• High-temperature, commercial-grade dip tubes for greater durability
• Offset dip tube to prevent sediment buildup
• Bowl-shaped tank bottom to allow more complete tank draining
• Standard ¾” brass nipple for easy, professional installation
• 4 inches of Envirofoam® insulation for superior efficiency with no ozone-depleting chemicals
• Replaceable brass drain valve
• Conduit-contained wiring
• Lifetime Warranty against corrosion and leaks