A furnace distributes warm air through vents and the ductwork. A blower circulates both cold and heated air through the house. The furnaces are usually powered by gas. It comes with a combustion module, as well as a vent connector for exhaust and ducts used to circulate heated air throughout the home. Electric furnaces can be a great alternative to gas-powered heating systems. Cost The cost of purchasing a new air conditioner furnace depends on the model and efficiency rating. The SEER ...