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Trane fan "On" for outside air?

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Trane fan "On" for outside air? MNRebecca 06-29-2008
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Posted by MNRebecca on June 29, 2008, 11:56 pm
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.

Posted by KJPRO on June 30, 2008, 2:15 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.

Setting the thermostat "fan setting" to the "On" position runs the blower
24/7, as it circulates indoor air.



Posted by Rebecca Webb on June 30, 2008, 10:04 am
Rats. But thanks for the info, everybody.
** Posted from http://www.teranews.com **

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.



Posted by freckles on June 30, 2008, 9:30 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.

If the outside temperature is that much cooler at night than your home, you
might want to consider getting a window fan to bring cool air in at night.

Don



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