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Posted by tom on October 6, 2007, 10:45 pm
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> > > DonC wrote:
> > >> Hi all,
>
> > >> In every house I've owned, until now, I've installed a whole-house fan.
> > >> They significantly reduce AC costs and make for comfortable living.
> > >> Alas, that was while I lived in Michigan in houses that had attics. My
> > >> typical unit included a twist timer and variable speed motor.
>
> > >> Now we live in southeastern AZ in a condo with a flat built-up roof so a
> > >> typical attic unit won't work. But we still have frequent cool nights
> > >> that would we could benefit from.
>
> > >> Anybody here have any experience with WH fans in a similar setting? My
> > >> research so far has been disappointing -- no variable speed fans and
> > >> fewer available units : (
>
> > >> Thanks
>
> > > Being in AZ I would consider a swamp (evaporative) cooler. A downdraft
> > > model would easily install on a flat roof, and give you cooling when
> > > needed, not just at night. I'll bet most of your neighbors have one, (or
> > > A/C).
>
> > Yes we have AC. Some -- but closer to a "few" rather than most -- have
> > swamp coolers but they're simply a form of air cooling limited to about 20
> > degrees of cooling. When temperature get over 100, 20 degrees isn't enough.
>
> > But we're talking about a different animal here. A WH fan "moves" existing
> > cool air supplementing AC at a much, much cheaper cost.
>
> A WH fan will move your conditioned air into the great outdoors, won't
> it? Unless you're talking about a recirculating type fan, which you
> already have on your AC. Nice weather we're having now, eh? Tom
Oops, just re-read your initial post, and will recommend the swamp
cooler. The blower will push cooler nighttime air just fine, and save
lotsa bucks over the AC during those in-between seasonal warm
spells . Tom
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