The problem I see is that most brands have a motor rated for much higher power than the paired solar module. Most manufacturers use the same motor on, for example, their 10, 15, and 20W fans. Nonetheless, if you size and locate the fans properly for the attic, you will see a dramatic reduction in temperature. They may not *seem* to move much air, but the temperature reduction is all that really matters... They work in that sense, at least in SW Florida where attics get blazing hot and solar resources are excellent.
That being said, there are lots of valid arguments against them. I don't have one at my home (I'm saving up for foam insulation). Jason Szumlanski Fafco Solar On Fri, Jun 8, 2012 at 12:19 PM, Mark Byington <ma...@cobaltpower.com>wrote: > Carl,**** > > ** ** > > Although of course I love all things solar, we actually don’t recommend > solar attic fans, for the simple reason that the ones I have seen don’t > seem to move much air.**** > > ** ** > > We generally install the round 24” dia mushroom-shaped fans which move > lots of air, and have a thermostat so they only run when necessary. Sorry > I don’t know the brand name, but we buy them at Home Depot, and they seem > to be well built, fairly quiet, and reliable.**** > > ** ** > > -------------**** > > Mark Byington**** > > Cobalt Power Systems, Inc.**** > > (C) 650-714-8150**** > > ma...@cobaltpower.com**** > > www.cobaltpower.com**** > > **** > > **** > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > >
_______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
