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My house has a 96% eff condensing LP furnace which has the PVC venting. I had to use an 80% non-condensing LP furnace in my garage. Both furnaces have the draft inducer, do I need to vent the exhaust vertical on the 80%, up over the roof, etc, or can I run a metal pipe horizontal through the wall?

Oops.... Not on TV Hi, my name is Lou, and I'm a recovering - oops again, wrong forum for that! Try again, Hi, obviously new to this forum. Just moved to upstate NY, put an addition on my garage. Making it into welding area/shop. 2 story garage, 16 x 26, I added a 14 x 26 bay, and 16 x 8 extra...