A brand new lennox furnace installed in a basement.

Why Does Our High-Efficiency Gas Furnace Vent Hot?

Do You Need to be Concerned if Your Furnace Exhaust Pipe is Hot? Older style furnaces had their exhaust run up through the home and then up through the roof. Because the chimney is out of reach, most people have no idea how hot it can become. Whether the furnace is a standard (a conventional furnace 50-70%), mid-efficiency (70-80%) or a high-efficiency furnace, the provision for combustion air and flue gas vent systems is very important. Mid-efficiency furnaces have an […]