You need to make sure your furnace is venting properly.
Venting high efficiency furnace through wall.
To combat this issue a high efficiency condensing furnace uses pvc pipes to extract the acidic water from your home.
When this happens the exhaust gases cool and condense creating a slightly acidic by product.
If you are venting a high efficient furnace with the pvc piping you can go through a roof or wall.
These are connected to the furnace and routed out to the side of your home.
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.
So which type of venting system should your furnace have.
That depends on whether you have a standard efficiency or a high efficiency furnace.
If your furnace has an afue rating below 90 percent it will most likely have a flue pipe that goes up through your roof.
These pvc pipes are connected to the furnace and expelled outside.
The basement ceiling is about 6 1 2 or 7 feet high.
It is easier to go through the wall next to the furnace and makes it a lot easier to deal with.
They include a second heat exchanger that reclaims additional heat from the system s exhaust gases before they are vented away.
If it went out the chimney it would leave more headroom.
Both types of heating systems can vent horizontally through a building wall but the exhaust products of high efficiency or condensing boilers and furnaces are generally cool and have different venting and combustible clearance specifications.
Don t confuse direct vent heating equipment with the through wall venting and air intake of high efficiency boilers and furnaces.
Should my furnace flue pipe go through the roof or the side of the house.
To avoid this problem high efficiency furnace venting requires the use of pvc pipes instead of metal pipes to remove the acidic condensate from your home.
Condensing gas furnaces achieve their high levels of efficiency by adding another step to the fuel burning and venting process.