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stevkatz14
Dec 28, 2008, 05:05 AM
I have gas heat in my home. Sometimes it seems like there's cool air coming out of the vents through the duct work even though I am heating the house. Is this normal?

Thank you very much.

KC13
Dec 28, 2008, 08:18 AM
At times this would be normal, but those times would normally be limited to the beginning or end of a heating cycle. A unit that short-cycles can run excessively while producing this effect.

MarkwithaK
Dec 28, 2008, 10:40 AM
As would a unit that has a flame sensor failing intermittently.

stevkatz14
Dec 28, 2008, 01:58 PM
Well, I really am an idiot.

The thermostat was set to "circulate" instead of just "heat".

So, my next question: I have it set to "circulate" for spring, summer, and fall, would you suggest I also leave it there for winter, or just leave it at "heat"?

Thanks so much,
Steve