Hi, I live in a house, have all electric central heat and air. Currently it is set to heat, the switch which is for auto, or fan on is set to auto, and heat is on. Here's what I noticed, just because I happened to be standing under one of my air intakes earlier. I noticed a sort of back draft, of air going up through that intake, but the unit was not currently running. I noticed it happened a couple of times. What causes that? Seems like it would be sucking warm air out of my house and/or causing these cold drafts inside and I don't care for that idea. Is that normal? Do I need to check something? NO windows should be open in the house, and this intake I noticed this problem with is the one inside the house itself. The main unit is up in the attic, and we have two intakes. One is actually in the garage because I have a vent out their to keep it somewhat heated and cooled as a shop.
Thanks, Matt [Non-text portions of this message have been removed]
