Well-Suited for Solar, Geothermal or Hydronic Applications, Non-Metallic Marathon Thermal Storage Tanks are Available in 50-, 85- and 105-Gallon Sizes

Rheem is pleased to introduce the new Marathon Two-Port Thermal Storage Tank.  Its innovative design provides building professionals with a light-weight, energy-efficient thermal storage tank with the installation flexibility to fit a wide variety of applications. A perfect match for today’s solar, geothermal or hydronic water heating systems, its unique construction is guaranteed to match or exceed the longevity of these highly efficient home comfort systems. 

“Since Marathon is the most advanced and longest lasting thermal storage tank available, consumers look to its technology to supplement a variety of water heating systems,” said Jeff Haney, product manager for Rheem Marathon.  “Rheem is committed to the development of innovative air conditioning and water heating products like Marathon that offer new approaches to sustainability and green living.” 

Built to last and virtually maintenance free, the Marathon Thermal Storage Tank comes with a lifetime warranty due in part to the unique construction of the inner tank. The inner tank features the same non-metallic construction as the Marathon Lifetime Residential Electric Water Heater that was recognized with a Consumer Award from the Society of Plastic Engineers. Marathon’s award-winning technologies include:

• Corrosion-resistant inner tank: The seamless, blow-molded polybutene inner tank is wrapped in multiple layers of filament-wound fiberglass, making it impervious to the rust and corrosion that can sharply curtail the operational lives of conventional storage tanks.  The non-metallic tank needs no corrosion-fighting anode rod, averting any potential odor problems due to the chemical makeup of the local water supply.

• Energy-saving insulation: The durable inner tank is encased in 2.5 inches of polyurethane foam insulation, intended to minimize heat loss through the walls of the tank and cut energy consumption.  A pipe wrap kit is also provided to maximize energy efficiency.

• Protective outer tank: The tank and insulation are enclosed within a durable, dent-resistant, molded-polyethylene outer jacket.  Recessed into the bottom of the jacket, a factory-installed, full-port brass drain valve is kept well out of the way of brooms, scrubbers and other housecleaning equipment.

Available in 50-gallon, 85-gallon and 105-gallon capacities with two-port configurations, the Marathon Thermal Storage Tank includes these other key features:

• Bowl-shaped tank bottom to allow complete sediment draining
• High-temperature polysulfone dip tube
• Collector feed and return fittings located at the front of the tank, simplifying installation for solar and geothermal applications
• Thermostatically controlled electrical elements for supplemental heating (on four-port tanks)
• Factory-installed temperature and pressure relief valve and vacuum relief valve

Marathon’s extreme durability is only one part of the story. The 50-gallon stands at less than 67 inches in height and weighs 100 pounds while the 85- and 105-gallon are less than 71 inches high and weigh 134 pounds and 152 pounds, respectively, making them easy to maneuver on the jobsite.

The Marathon carries a watertight lifetime warranty — guaranteed not to leak for as long as the consumer owns his or her home.  In addition, all models are protected by a six year parts warranty.

About Rheem Manufacturing Company
Rheem Manufacturing Company (www.rheem.com) is privately held with headquarters in Atlanta.  In its 82nd year of operation, the company manufactures a full-line of high-quality residential and commercial heating and cooling systems; tank, tankless, solar, and heat pump water heaters; swimming pool heaters and commercial boilers throughout North America and world markets.  The company’s premium brands including Raypak, Ruud and Rheem have been recognized with countless industry and consumer awards for reliability, innovative design, and high quality. Rheem is the official heating, cooling, and water heating supplier to Richard Childress Racing (RCR) and Kevin Harvick, Inc. (KHI) and sponsors the KHI No 33 car in the NASCAR Nationwide Series, KHI's No. 33 truck in the Camping World Truck Series and RCR's No 29 car in the NASCAR Sprint Cup Series.