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Posted by Ralph Mowery on June 30, 2008, 7:54 am
> Concerning the electric thermostat that controls my Trane furnace and
> air conditioner, if I change my fan switch from "Auto" to "On" (so
> that it runs continuously), is it pulling in air from outside or just
> circulating the air already in the house? In other words, is running
> the fan a good way to cool the house at night when the air temp.
> outside is a good 15 degrees cooler than inside?
>
> Thanks.
It just runs the fan the same as in auto. It recirculates the air in the
house.
It will not change anything so it will not bring any outside air into the
house.
In other words, no.
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