Roof Vent For Gas Furnace In Attic

Fresh combustion air for the furnace is coming from the soffit vents from both roofs.

Roof vent for gas furnace in attic.

Soffit vents may leave air trapped at the top of your attic. A furnace in the attic is a design that works for all homes. It s made of zinc coated galvanized steel for durability and reliability. Goose neck vent the master flow 4 in.

Run the vent pipe up through the roof and install a metal or pvc flashing collar over it. Unless you have a slab where the equipment would likely be in the garage venting can go directly through the roof instead of routing through an exterior wall making it much easier to install the duct work along the upper floor. Also known as the type b this vent is operating on the natural air convection. Furnace vents remove fumes and combustion air that are generated by gas and oil fired furnaces.

Gable vents may circulate air through only a small percentage of your attic. The roofers installed 4 passive roof vents 3 being in the area of the furnace in the attic. The roof vent pipe is installed cut through the roof and around the pipe attached to the roof is surrounded with rubber boot as insulation for the gap between the pipe and roof. There are many possible parts of the roof potentially leaking but one of the most common ones is the area around the roof vent.

Separate the two sections of vent pipe using the same method used to remove the termination cap from the roof s vent pipe. Goose neck vent in black can be used to cover exhaust pipes extending through your roof or for attic ventilation. Enter the attic area and locate the vent pipe joint nearest the roof flashing. Match the vent pipe to the furnace maker s recommendations either sheet metal or vinyl.

However the furnace is in an attic space which has no venting for warm humid air from house from soffits from hot roof etc to escape. I just had a new roof put on my 1910 home. There is no soffit or ridge venting. This vent is designed to be used on 4 in.

Previous to this new roof there was no attic ventilation and 2 years ago a gas furnace ah was installed in the attic for hvac on the second floor. When the vent is withdrawing air from the house it expels the gas outside through the vent. This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner. The vents consist of circular or oblong pipe that attaches to a flange on the furnace and extends.

The master flow 4 in. The furnace has a stack which penetrates the flat roof and is about 3 4 above the roof plane.