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Intake air for 90 plus NG furnace
My brother in law had a new 90 plus NG forced air furnace installed, old furnace was exhausted up the chimney. The installer neglected to pipe outside air to the furnace, he said "didn't need to, furnace sits in middle of basement". A PVC pipe that was supposed to carry out side air just runs into the open basement.
I thought this was odd, my furnace pipes outside air into the furnace.
Of course it was a after hours installer and no permits pulled .
Is the installer correct???