Photo of two furnaces.WI 11007 – Furnaces, Heat Pump AHUs

  • Includes electric, LP, fuel oil and natural gas furnaces, as well as water source and air-air heat pump blower coil units

  • Unit of measure is "each"

  • May need replacement to increase system efficiency

  • Typical life expectancy is about 15 years for heat pumps and 20 years for furnaces