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02-11-2005, 07:02 PM #1
I have an American Standard single stage freedom 90 gas furnace. It has a power vent, allowing me to vent horizontally.
I want to know what size vent pipe is required. It goes about 40 ft, with a 90 degree elbow in it.
There is 2" pipe now, which I found out was too small for my water heater. So, while I'm at it, I want to make sure I have the correct size for the furnace.