Also since you said it is electric, it won't have a chimney because there would be nothing to exhaust. Chances are what you are noticing is unheated air from the attic making its way into the house. You'd have to do some exploring in the attic to see if there are open areas not closed off by the builder. As I recall it is a fairly new house and you've had some builder related problems. ----- Original Message ----- From: Ron Yearns To: [email protected] Sent: Thursday, January 17, 2008 6:44 PM Subject: Re: [BlindHandyMan] Back drafts up furnis air intake?
What are you referring to as a intake grill? In the normal forced air furnaces systems there is supply grills that blow air out into the room and garage in your case. There is also return air grills. Sometimes one in each room and sometimes one or two larger ones like in a hallway. When a furnace is off normal convection may occur through this ductwork. Which direction it flows depends on where the ducts are located, where heat is being lost and the locations of the grills. If this is a older home this is likely normal. If it is a new tight home you may have something like Dale was talking about. Ron ----- Original Message ----- From: Matt To: [email protected] Sent: Thursday, January 17, 2008 12:38 PM Subject: [BlindHandyMan] Back drafts up furnis air intake? 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] [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
