On Thu, 27 Mar 2014 05:11:14 -0700 (PDT), Albert Mclaren
wrote:

To use the fan you must have windows open to draw in the cool air.

Then you need more vents along your eaves. You should not need to open
windows, or have pilot lights blow out when you use the WWfan. Someone
likely just installed the fan, and never added the venting needed to go
with it. Those fans are mostly just intended to be used when the
temperatures outside are real hot and the sun beating down on the roof
makes the attic real hot. You should be venting the heat out of the
attic, not sucking air out of the living space. Of course if you dont
have an AC, and and cool your house wiht fans only, and keep the windows
open on hot days, then using this fan too cool the entire structure
could work, and is cheaper to run than an AC.