How To Vent A Furnace Through The Roof

Should my furnace flue pipe go through the roof or the side of the house.

How to vent a furnace through the roof.

A conventional natural gas furnace will vent the dangerous combustion gases through a simple vertical exhaust system that is attached to the furnace. This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner. What to know before you install b vent furnace pipe. Go into your attic.

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. If your furnace has an afue rating below 90 percent it will most likely have a flue pipe that goes up through your roof. To do this you need a duct that is the same size diameter as the vent flange on your heater.

Run the vent pipe up through the roof and install a metal or pvc flashing collar over it. The penetration will be oval to have a round pipe exit vertically through a pitched roof you need an oval hole in the roof. So which type of venting system should your furnace have. What to know before you install b vent furnace pipe.

The exhaust system typically uses metal venting often routed into a chimney stack to exhaust the combustion gases created in the furnace fire chamber. The vent outlet must be installed a minimum of 12 in. A conventional furnace vents these combustion gases through a vertical exhaust system that is attached to the furnace. The furnace may be vented vertically through the roof.

Above the air intake inlet. Position the vent pipe up to the bottom of the roof. A high efficiency furnace uses a different type of venting system because it extracts the heat that remains in those combustion gases before venting the resultant mixture of water and carbon dioxide. Twist the roof s vent pipe clockwise one half turn with one hand while holding the gas furnace s vent pipe still with the other hand.

The outlet inlet of the vent and air intake terminations shall be a minimum of 12 inches above highest anticipated snow level. With the pipe in a vertical position trace around the pipe using a pencil. Push the male end of a new vent pipe up through the bottom of the roof flashing and set its female end on the male end of the vent pipe that connects to the gas furnace. One of the most common methods of venting your garage heater is by running the vent through the roof.