Furnace Vent Pipe Through Roof

Match the vent pipe to the.

Furnace vent pipe through roof.

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. The black finish helps this vent blend into your home s rooftop. The master flow 6 in. Also no chimney is needed regardless of whether horizontal or vertical installation is used.

How to vent a furnace in a roof 1. With the pipe in a vertical position trace around the pipe using a pencil. Horizontally through the sidewall or vertically through the roof. High efficiency furnaces take advantage of the heat in the combustion gases that are wasted in natural ventilation systems.

If your furnace has an afue rating of 90 percent or above it will have a flue pipe that goes out of the side of your house. Another problem is that flue pipes that go through the roof tend to be less efficient. It s made of zinc coated galvanized steel for durability and reliability. Piping can be set horizontally to allow venting through a sidewall or vertical installation can also be undertaken to allow venting through the roof.

Position the vent pipe up to the bottom of the roof. Go into your attic. Since the exhaust pipe is running on a sidewall the fan works together with the furnace. If your furnace has an afue rating of 90 or lower it probably exhausts the gases though the flue pipe on your roof.

Put a cover on the vent. Installation of direct venting is fairly easy but more costly than the b vent type. Also known as the induced draft fan this one has a fan that is located on the end of the pipe. Goose neck vent in black can be used to cover exhaust pipes extending through your roof or for attic ventilation.

Goose neck vent the master flow 6 in. When compared to the natural vent this one is more flexible although it is also costlier. If your furnace has an afue rating below 90 percent it will most likely have a flue pipe that goes up through your roof. The penetration will be oval to have a round pipe exit vertically through a pitched roof you need an oval hole in the roof.

Locate the spot to install the vent pipe using a tape measure to determine distance from a wall or other. That s because the combustion byproducts are in a gaseous form so the gases can float up through the flue pipe and out of your roof. That depends on whether you have a standard efficiency or a high efficiency furnace. This vent is designed to be used on 6 in.

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. Run the vent pipe up through the roof and install a metal or pvc flashing collar over it.