Gas Furnace Venting 2 Roofs

A conventional natural gas furnace will vent the dangerous combustion gases through a simple vertical exhaust system that is attached to the furnace.

Gas furnace venting 2 roofs.

The air is then vented outside through a b vent pipe which is set vertically to expel combustion air through the roof. When your furnace burns fuel it produces combustion gases as a byproduct. Oatey retro master roof flashing 1 4 in to 4 in x 8 in epdm rubber vent and pipe flashing. Gases produced during combustion are very hot and as such easily rise through the flue.

This combination of carbon dioxide and water would damage the type of vents used in conventional systems which run vertically out of. It draws air from within the house for combustion. Type b vents are a standard design that most modern gas furnaces use. You should know how to vent a gas furnace and get rid of the harmful gases for the health and safety of anyone living in your building.

Free delivery with 45 order. When the vent is withdrawing air from the house it expels the gas outside through the vent. Match the vent pipe to the furnace maker s recommendations either sheet metal or vinyl. The two systems use different venting systems.

Run the vent pipe up through the roof and install a metal or pvc flashing collar over it. The vent pipe of your gas furnace plays an important role by carrying all toxic gases created during the combustion within the furnace out of the building. Today we re going to help you understand the difference between the two styles of furnace venting by answering the question should a gas furnace flue pipe go through the roof or the side of the house why does your furnace need a venting system. Once a high efficiency condensing furnace removes this excess heat that conventional furnaces vent to the outside of a home the leftover mixture is acidic water.

Also known as the type b this vent is operating on the natural air convection. Find vent pipe flashing at lowe s today. Roof vent kit bath and dryer in bronze model rvk346011 27 97 27 97. It provides a direct intake vent that brings outside air to the sealed combustion chamber with one pipe while a second vent pipe provides sealed venting of exhaust gases back to the outside of your house.

In a direct vent system you can readily see the two pipes emerge through the side of your house. The exhaust system typically uses metal venting often routed into a chimney stack to exhaust the combustion gases created in the furnace fire chamber. Dia aura pvc vent cap exhaust with adapter for schedule 40 or schedule 80 pvc pipe in black model av 4 pvc bl. Vents can also be terminated above the roof.