Frozen furnace exhaust pipe. If ice continues to build up the vent pipe can become blocked causing the furnace to shut down. Vent terminations positioned too close to the ground. A furnace exhaust pipe otherwise known as the furnace flue pipe is used to help vent harmful gases such as carbon monoxide outside of your home. Thats why they newer furnaces are so efficient. The furnace exhaust pipe typically made of galvanized metal tends to run from the furnaces combustion chamber and up to the attic where it is.
Thats a scary thing. Blaine Stephan – Guardian Plumbing Heating We are taking all the heat out of the exhaust and heating our homes. Thats why they newer furnaces are so efficient. Take a mental note of where they exit the building and head outside. If your furnace is blowing cold air or if the temperatures are colder than minus 20 outside check your vents and clear them if need be.
If the temperature outside remains below freezing for a few days in a row its time to inspect the furnace pipe vent on the outside of your house. You can extend the pipe along the outside wall away from the neighbors vent to prevent it from causing the freeze. Concentric pipes with the exhaust air pipe outside of the intake pipe would warm the intake pipe so freezing could not occur. If a furnace is installed in a vented crawl space or attic the condensate lines and trap can freeze if temperatures drop low enough.
Its the high humidity exhaust that freezes throughout exhausting. The trick would be. They should be near where your furnace is on the inside. Can You Thaw a Frozen Condensate Line.