That depends on whether you have a standard efficiency or a high efficiency furnace.
Venting gas furnace through wall.
Side wall venting saves costly materials and labor on two three or more story runs.
So which type of venting system should your furnace have.
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.
These ventilation pipes should be isolated from the furnace combustion chamber and made airtight to eliminate the possibility of combustion gas leakage.
The fix was to use double wall b vent with an external power venter.
For clean comfortable heat when and where you want it the gas flame is completely sealed inside away from all contact with room air.
Gas or oil fired side wall power vents are provided by several manufacturers listed at the end of this article.
Direct venting or side wall vent chimney and flue systems are a method of venting the exhaust gases from a heating appliance directly out through the side wall of a building while eliminating the need for a vertical chimney of any sort.
The diameter of the vent pipe should always be larger than that of the gas furnace flue ensuring that no gas escapes from the pipe.
Should my furnace flue pipe go through the roof or the side of the house.
Adhere to them even if you are building the vent on your own.
The basement ceiling is about 6 1 2 or 7 feet high.
Gas furnaces usually come with their own specifications.
The space saving direct vent furnace design mounts to an exterior wall and the adjustable vent assembly adjusts to fit walls from 4 1 2 in.
It also increases living space by cutting out interior chases.
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 vent pipe must overlap at each joint to prevent gas from leaking.
If it went out the chimney it would leave more headroom.
Proper sidewall venting requires installing separate vent pipes horizontally so that they vent to the outdoors through a wall of your home.