Furnace Vent On Roof

The vents consist of circular or oblong pipe that attaches to a flange on the furnace and extends upward through an attic and passes through a roof flashing.

Furnace vent on roof. This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner. Match the vent pipe to the furnace maker s recommendations either sheet metal or vinyl. That depends on whether you have a standard efficiency or a high efficiency furnace. The exhaust system typically uses metal venting often routed into a chimney stack to exhaust the combustion gases created in the furnace fire chamber.

A gas furnace uses a double wall flue pipe for its vent. Also known as the type b this vent is operating on the natural air convection. Run the vent pipe up through the roof and install a metal or pvc flashing collar over it. When the vent is withdrawing air from the house it expels the gas outside through the vent.

A conventional natural gas furnace will vent the dangerous combustion gases through a simple vertical exhaust system that is attached to the furnace. The inner liner carries the furnace s exhaust fumes outside and the outer liner insulates and protects the inner liner. Should my furnace flue pipe go through the roof or the side of the house. So which type of venting system should your furnace have.