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).