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Thanks for the input! Glad to hear that it should be okay. The chart for the furnace says with 4 elbows the vent pipe at 2" can be 20ft and 3" can be 82ft, but doesn't address 4" or any oversizing (also doesn't say anything about the air intake sizing, or maybe I just missed it?). Also, I...

Hi, I have a Goodman gas furnace (with an AC above it). From all the literature on the furnace I read, the intake and vent (2 pipe system) can be 2" or 3" pvc depending on how far the pipe goes and turns. What I have installed are 4 inches (which reduce to 2 to connect to the furnace). Are...

Hey, I want to move my radiator back, 2 inches closer to the wall its parallel to. The 1-1/2 pipe out of the floor has a 1-1/4 reducer coupling on it, then a nipple, then the 1-1/4 shutoff angle valve. As a solution: I thought maybe i can put a 90 reducer on the pipe out of the floor that...