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Re: how much should central AC run ?

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Re: how much should central AC run ? cowboy 06-21-2005
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Posted by cowboy on June 21, 2005, 3:12 am
more likely that your home is "under-insulated"



> My AC when it's 90 out will nearly run continuously. I'm just curious
> if that is normal or if I have been undersized by the contractor
> (installed a year ago).
>
> I live in Colorado - dry climate.
> We get a lot of direct sun.
> The ranch has 1800 sq ft on the main level and a below grade bsmt of
> the same size. Part of bsmt is finished, but we do not occupy it
> often.
>
> Mid June - end of August can have 90 degree days; seems like most days
> are 85-95.
>
> We set the thermo at 76 degrees. But if it's 90 outside and I try to
> set below 76, it will never make it down until evening.
>
> For mid 80s days, it's fine (remember we set our thermo at 76 though).
>
> I'm concerned that a) the HVAC contractor has undersized my AC unit
> and b) if a new owner preferred 72, it could not be held during our
> summers.
>
> I realize it's best not to oversize the unit, but with a dry climate
> to begin with, removing humidity is not much of an issue.
>
> Thanks,
>



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Posted by Joseph Meehan on June 21, 2005, 7:15 am
cowboy wrote:
> more likely that your home is "under-insulated"
>

I would tend to say all homes are under-insulated. :-)

In this case with a newish unit taking a good look at insulation and
possible upgrades may be a very good approach, cheaper that hardware.


--
Joseph Meehan

Dia duit



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