Can You Vent A 80 Furnace Through A Wall

The barometric damper will prevent pulling additional excess air through the furnace.

Can you vent a 80 furnace through a wall.

The answer is yes and no. Also known as the type b this vent is operating on the natural air convection. It could either go out the unused walled in chimney that the oil furnace was vented through or they could cut a hole in the concrete block wall and vent it out the side of the house. Taking care of the vent on your gas furnace is extremely important but working improperly and damaging your vent can have catastrophic results.

You cannot just take the vent off an 80 efficient furnace and run it out a side wall. Be sure to check the clearance distances required for your particular heater brand and model. You need to use an auxiliary power inducer. The wall mount direct vent gas furnace exhaust vent outdoor clearance distances shown in our illustration below are an example adapated from williams 2018.

Example of outdoor and through wall clearances for a direct vent wall mount gas furnace. So what does this mean. What vent pipe is required on top of a furnace. Replacing a gas furnace whether a wall or forced air furnace requires the appropriate venting to protect your family from carbon monoxide poisoning.

An 80 efficient furnace can be side wall vented per national fuel as code 7 3 4 with the use of a mechanical draft system of either forced or induced draft design. Always go by the manufactures installation instructions in short no even if it had a combustion blower as in some 80 furnaces they need a vertical vent to operate as intended and be to code. This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner. The basement ceiling is about 6 1 2 or 7 feet high.

The combustion air flow through the furnace must be controlled or its efficiency will decline. You cannot just take the vent off an 80 efficient furnace and run it out a side wall.