solar attic fan opinions please
We have a modest new home which is very well insulated and has been situated for simple passive solar. This has worked well for winter heating help. What can I say? We have lots more heating days here in WI than we have cooling days. :-) We did a lot of research before designing this house and have 3 ft. overhangs on the south side to shade the windows in summer. We did not install air conditioning. It is a 50 ft. long ranch with 6/12 pitch, which one long expanse of roof is directly south. Shingles medium-dark. No trees shading, yet. We would like to exhaust some excess heat from our attic, to assist with summer comfort.
There is NO QUESTION that the exhaust fan we choose will be solar. I would like some of your opiniions on the solar attic fans that exhaust out the gable vent, rather than install through the roof. Obviously it is a much easier installation (handy hubby can do either way). But will having one fan, sized to suit the 1400 sq. ft. of attic, installed on one end do as well as one that can be installed centrally through the roof?
We do have adequate passive venting for the air to come in to replace what the fan draws out--50% of the 3 ft. soffits are full vents (not just little round "pucks") and the ridge vent runs the entire length of the roof and the gable ends have 18" X 24" vents.
Any experience greatly appreciated!