Marathon Point-of-use
Unmatched Durability
15- and 20-Gal. Capacities
Ideal for condos, cabin and light-duty commercial applications
2.5″ polyurethane insulation reduces heat loss for greater energy efficiency.
Marathon Standard
Unmatched Durability
30-, 40- and 50-Gal. Capacities
High efficiency design and a lightweight tank that won't corrode
The Marathon water heater features a seamless, blow-molded plastic inner tank, so it won’t rust or corrode.
Thermal Storage Tank
Unmatched Durability
50-, 85- and 105-Gal. Capacities
Marathon® thermal storage tanks feature a lifetime limited tank warranty and a 6-year limited parts warranty
The Marathon water heater features a seamless, blow-molded plastic inner tank, so it won’t rust or corrode.
Multiple layers of filament wound fiberglass give the tank unmatched strength.