What is a high efficiency condensing furnace?
What is a high efficiency condensing furnace? Condensing Furnace:A high-efficiency furnace (90% AFUE or higher) utilizes a second heat exchanger to heat the air from condensed exhaust gases in order to reach higher efficiencies. A high-efficiency condensing furnace requires specialized venting. What efficiency should my furnace be? A gas furnace with an AFUE of 90 or higher is considered a high-efficiency furnace, though furnaces today can reach efficiencies of up to 98.5 percent. To qualify for the Energy Star label, a furnace must have an AFUE of 90 percent or higher. Typically, the more efficient the furnace, the higher the...