Can You Vent A Gas Furnace Through A Wall

You cannot just take the vent off an 80 efficient furnace and run it out a side wall.

Can you vent a gas furnace through a wall.

I think don t it is possible to vent a 95 efficiency furnace up through an existing chimney. Gas furnaces usually come with their own specifications. Adhere to them even if you are building the vent on your own. The vent pipe must overlap at each joint to prevent gas from leaking.

I believe high efficiency furnances must be vented horizontally through a wall. I would be very leary of a hvac contractor would not do this. So what does this mean. Only units designed for it can have a vent go thru the wall and end there without a vertical stack.

I have not heard of high efficieny only lasting 10 13 years. These ventilation pipes should be isolated from the furnace combustion chamber and made airtight to eliminate the possibility of combustion gas leakage. 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. 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.

Distances pertaining to the furnace combustion air intake and exhaust vent distances from the indoor furnace cabinet itself and nearby surfaces materials or combustibles. The exhaust gas is too cool for it to rise. The answer is yes and no.