Proper Venting For Furnace Into The Roof

Traditional gas fired forced air furnaces produce hot combustion exhaust gasses and therefore need metal vent pipes or chimneys.

Proper venting for furnace into the roof.

Otherwise such vents may be unsafe venting combustion products including dangerous carbon monoxide into the building. In contrast modern high efficiency condensing furnaces exhaust much cooler gasses and need only plastic pipe materials such as pvc cpvc or abs for their exhaust vents some high efficiency furnaces also include a plastic pipe for intake area and all types. The different types of venting. The 3 2 10 rule ensures code compliance and proper venting.

Illustrations of proper gas fired water heater venting using type b double wall vent pipe through a roof above or through a chimney below include details for the flue vent connector such as the requirement of a minimum. A chimney that s too short can result in poor appliance performance. Match the vent pipe to the furnace maker s recommendations either sheet metal or vinyl. Drip edge vents are a two in one installation that promote water shedding at the eaves and rakes of a roof while also allowing for ventilation into the attic.

To guarantee you have enough pipe you must follow the 3 2 10 rule. Proper furnace water heater venting is an extremely important issue which depends on the performance of the house chimney chimney flue or other exhaust assemblies. With offsets tallied and the roof penetration point determined you can calculate how much chimney pipe you need. Example of high efficiency furnace venting on a roof.

If you don t have soffits or your roof style doesn t allow for soffit vents some homeowners will consider a drip edge vent. This combination of carbon dioxide and water would damage the type of vents. Most old gas furnaces use such a mechanism while modern furnaces use the b pipes. Consequences of improperly assembled vent pipes problematic chimney flue deteriorating chimney walls can be sometimes fatal fire and carbon.

The two systems use different venting systems. When venting your gas furnace you need to know the different kinds of vents that can be installed. The conditions explained in this post also apply to the wood burning appliances. Run the vent pipe up through the roof and install a metal or pvc flashing collar over it.

Well making sure that you choose the right venting style will protect them.