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Posted by on June 22, 2006, 11:17 am
I have found that leaving the whole house fan on all the time (instead
of auto position) on the thermostat helps keep the temperature
differential down in my house by a noticable amount.
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Posted by on June 22, 2006, 12:14 pm
scott21230@gmail.com wrote:
> I have found that leaving the whole house fan on all the time (instead
> of auto position) on the thermostat helps keep the temperature
> differential down in my house by a noticable amount.
Whole house fan on with the AC? A whole house fan goes in the
upstairs ceiling, draws cool air in from outside, and forces it out via
the attic.
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Posted by mm on June 22, 2006, 10:56 pm
On 22 Jun 2006 09:14:06 -0700, trader4@optonline.net wrote:
>scott21230@gmail.com wrote:
>> I have found that leaving the whole house fan on all the time (instead
>> of auto position) on the thermostat helps keep the temperature
>> differential down in my house by a noticable amount.
>Whole house fan on with the AC? A whole house fan goes in the
>upstairs ceiling, draws cool air in from outside, and forces it out via
>the attic.
And if you leave the fan on all the time, the outside air isn't cool
during the day. You're right, Scott must mean something else.
!!! He's talking about the furnace fan. And the switch he refers to
is the central thermostat.
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Posted by Bob Brown on June 22, 2006, 11:52 am
On Thu, 22 Jun 2006 13:36:58 GMT, "Joseph Meehan"
>Lack of proper air return is also an issue, do you get
>more cool air coming in if you open the door to the room?
Only about .4 = .7 degrees cooler [and that's only when the sun is
set[
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Posted by on June 22, 2006, 12:22 pm
Bob Brown wrote:
> On Thu, 22 Jun 2006 13:36:58 GMT, "Joseph Meehan"
> >Lack of proper air return is also an issue, do you get
> >more cool air coming in if you open the door to the room?
> Only about .4 = .7 degrees cooler [and that's only when the sun is
> set[
As someone else asked, is this an upstairs bedroom? Where is it in
relation to the duct runs? An upstairs room at the far end of the
ducting run is worse case. It's not unusual to see systems installed
with inadequate ducting to the far end. And if it's upstairs and the
handler is in the basement, that can be a real bitch to try to run
additional ducting to.
Make sure all the dampers in the path to that room are wide open.
Also, if a register on the same path serves another room, say
downstairs that is cool enough, closing the downstairs register will
force more cool air to go to the upstairs one. In the winter, you'd
want to reverse that, or leave both open.
The inline blowers that someone mentioned are available at the home
center stores. I installed one in a similar situation and it made a
noticeable improvement, though it didn't entirely solve it. I also
increase the venting in my attic, which helped.
They also have booster blowers that just sit over the register and get
plugged into an outlet. Never tried one of those, but it's easy to try
and you can take it back if it doesn;t work well.
I'd also check if there is a return in the room in question. If not
and one can be added that will help. If you try the advice of closing
off returns in some of the cold areas, you want to be sure there is
adequate return space somewhere else. Otherwise you will be affecting
the efficiency of the whole system.
In some cases, from a practical standpoint, the best solution might be
a small window unit to take care of that room.
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> of auto position) on the thermostat helps keep the temperature
> differential down in my house by a noticable amount.