I have a ducane 90% furnace...My dad and his HVAC buddy installed it for me about 7 years ago. Question I have is that I was looking over it the other day and it has two 3" pvc pipes running out of it. I know the is for the exhaust and the other is for ???(fresh air). It has plenty of returns coming in. Question is do I need to leave this hooked up? It doesnt make too much sense to me that I am heating 15 degree outside air. Can I put a shutoff or something on it or better off to leave it alone.
Furnace Question
- Thread starter Yamaha101
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paul52446m
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The other 3" pipe is not fresh air, it is burner air and it has to be there for the burner to, Leave it be. Later Paul
