An indirect water heater uses the main furnace or boiler to heat water that is circulated through a heat exchanger in the storage tank. The energy stored by the water tank allows the furnace to turn on and off less often, which saves energy. Therefore, an indirect water heater used with a high-efficiency boiler and well-insulated tank can be one of the least expensive means of providing hot water.
SupplyHouse.com offers a large selection of indirect heaters, including the popular Triangle Tube Smart and the Burnham Alliance indirect water heaters.
