Question about Heating & Cooling
Generally, the furnace must be at least 90+ efficiency to be able to use PVC pipe. In addition, high efficiency gas furnaces require a condensation pump, to pump excess moisture out of the furnace. If yours has always been venting up a vent pipe, then NO, you can't use PVC pipe.
Hope this helps you.
Posted on Mar 14, 2011
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Posted on Jan 02, 2017
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