Trane fan "On" for outside air?

"MNRebecca" <[email protected]> wrote in message
news:ae7fbadc-0c9a-4361-b28f-e95aaad5d4c3@x35g2000hsb.googlegroups.com...
> 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.

Rats. But thanks for the info, everybody.
** Posted from http://www.teranews.com **

"MNRebecca" <[email protected]> wrote in message
news:ae7fbadc-0c9a-4361-b28f-e95aaad5d4c3@x35g2000hsb.googlegroups.com...
> 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.

"MNRebecca" <[email protected]> wrote in message
news:ae7fbadc-0c9a-4361-b28f-e95aaad5d4c3@x35g2000hsb.googlegroups.com...
> 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

On Jun 29, 8:56 pm, MNRebecca <[email protected]> wrote:
> 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.

You already got the 'bad' news that it only circulates house air but..

The good news is that running it 'on' will significantly delay the
start of the AC. Much cheaper to run that fan than the AC. In my
case, when it becomes a bit uncomfortable in the house, putting it
"on" will keep the AC from running for another hour or two if it isn't
too hot outside.

Harry K

On Mon, 30 Jun 2008 07:12:44 -0700 (PDT), Harry K
<[email protected]> wrote:

>On Jun 29, 8:56 pm, MNRebecca <[email protected]> wrote:
>> 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.
>
>You already got the 'bad' news that it only circulates house air but..
>
>The good news is that running it 'on' will significantly delay the
>start of the AC. Much cheaper to run that fan than the AC. In my
>case, when it becomes a bit uncomfortable in the house, putting it
>"on" will keep the AC from running for another hour or two if it isn't
>too hot outside.
>
>Harry K

You are absolutely nuttier than a fruit cake Harry if you think that
is true.
Bubba

On Jun 30, 7:33 pm, Bubba <[email protected]> wrote:
> On Mon, 30 Jun 2008 07:12:44 -0700 (PDT), Harry K
>
>
>
>
>
> <[email protected]> wrote:
> >On Jun 29, 8:56 pm, MNRebecca <[email protected]> wrote:
> >> 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.
>
> >You already got the 'bad' news that it only circulates house air but..
>
> >The good news is that running it 'on' will significantly delay the
> >start of the AC.  Much cheaper to run that fan than the AC.  In my
> >case, when it becomes a bit uncomfortable in the house, putting it
> >"on" will keep the AC from running for another hour or two if it isn't
> >too hot outside.
>
> >Harry K
>
> You are absolutely nuttier than a fruit cake Harry if you think that
> is true.
> Bubba- Hide quoted text -
>
> - Show quoted text -

Harry is right. Turning the fan "ON" will circulate the cooler air
that sinks to the lowest level of the house and cool the upper levels
while heating up the lower levels. So, it depends on where the
thermostat is located. In my 4-level split, the thermostat is on the
third level up, and running the fan "ON" cools it down about 2 degrees
while heating up the lower levels, and does delay turning the
compressor on by an hour or two.

On Jun 30, 10:46 pm, "hr(bob) hofm...@att.net" <[email protected]>
wrote:
> On Jun 30, 7:33 pm, Bubba <[email protected]> wrote:
>
>
>
> > On Mon, 30 Jun 2008 07:12:44 -0700 (PDT), Harry K
>
> > <[email protected]> wrote:
> > >On Jun 29, 8:56 pm, MNRebecca <[email protected]> wrote:
> > >> 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.
>
> > >You already got the 'bad' news that it only circulates house air but..
>
> > >The good news is that running it 'on' will significantly delay the
> > >start of the AC.  Much cheaper to run that fan than the AC.  In my
> > >case, when it becomes a bit uncomfortable in the house, putting it
> > >"on" will keep the AC from running for another hour or two if it isn't
> > >too hot outside.
>
> > >Harry K
>
> > You are absolutely nuttier than a fruit cake Harry if you think that
> > is true.
> > Bubba

> Harry is right.  Turning the fan "ON" will circulate the cooler air
> that sinks to the lowest level of the house and cool the upper levels
> while heating up the lower levels.  So, it depends on where the
> thermostat is located.  In my 4-level split, the thermostat is on the
> third level up, and running the fan "ON" cools it down about 2 degrees
> while heating up the lower levels, and does delay turning the
> compressor on by an hour or two.

On Mon, 30 Jun 2008 19:46:18 -0700 (PDT), "hr(bob) hofmann@att.net"
<[email protected]> wrote:

>On Jun 30, 7:33 pm, Bubba <[email protected]> wrote:
>> On Mon, 30 Jun 2008 07:12:44 -0700 (PDT), Harry K
>>
>>
>>
>>
>>
>> <[email protected]> wrote:
>> >On Jun 29, 8:56 pm, MNRebecca <[email protected]> wrote:
>> >> 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.
>>
>> >You already got the 'bad' news that it only circulates house air but..
>>
>> >The good news is that running it 'on' will significantly delay the
>> >start of the AC.  Much cheaper to run that fan than the AC.  In my
>> >case, when it becomes a bit uncomfortable in the house, putting it
>> >"on" will keep the AC from running for another hour or two if it isn't
>> >too hot outside.
>>
>> >Harry K
>>
>> You are absolutely nuttier than a fruit cake Harry if you think that
>> is true.
>> Bubba- Hide quoted text -
>>
>> - Show quoted text -
>
>Harry is right. Turning the fan "ON" will circulate the cooler air
>that sinks to the lowest level of the house and cool the upper levels
>while heating up the lower levels. So, it depends on where the
>thermostat is located. In my 4-level split, the thermostat is on the
>third level up, and running the fan "ON" cools it down about 2 degrees
>while heating up the lower levels, and does delay turning the
>compressor on by an hour or two.


You and Harry are clueless. As Noon said, it will raise the humidity
level. Also, trying to pull that cool air from the basement will
reduce the ability of your system to be able to remove the warm air
from a first and second floor. Air will take the path of least
resistance and you will remove no warm air from your upper levels.
You two should really get a clue before you start babbling
Bubba