Roof Vent For Gas Furnace In Attic

Soffit vents may leave air trapped at the top of your attic.

Roof vent for gas furnace in attic.

The furnace has a stack which penetrates the flat roof and is about 3 4 above the roof plane. There are many possible parts of the roof potentially leaking but one of the most common ones is the area around the roof vent. 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. 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.

Separate the two sections of vent pipe using the same method used to remove the termination cap from the roof s vent pipe. The roofers installed 4 passive roof vents 3 being in the area of the furnace in the attic. It s made of zinc coated galvanized steel for durability and reliability. Match the vent pipe to the furnace maker s recommendations either sheet metal or vinyl.

Gable vents may circulate air through only a small percentage of your attic. A furnace in the attic is a design that works for all homes. Enter the attic area and locate the vent pipe joint nearest the roof flashing. The master flow 4 in.

This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner. When the vent is withdrawing air from the house it expels the gas outside through the vent. 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. There is no soffit or ridge venting.

Slide the vent pipe out of the roof flashing and into the attic. 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. The vents consist of circular or oblong pipe that attaches to a flange on the furnace and extends.

Fresh combustion air for the furnace is coming from the soffit vents from both roofs. I just had a new roof put on my 1910 home. 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. This vent is designed to be used on 4 in.

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.