Skipping the manufacturer's instructions during installation may result in a furnace that fails within six months or less. For example, heat exchangers can crack from improper venting, and gas valves ...
The average cost of a new furnace in the U.S. is about $4,800, according to HomeAdvisor.com, with a range from about $2,900 to $6,900. When you need a new furnace during the winter ...