GG ... I wanted Munn's Air Conditioning Service to check out our air conditioning unit because it was four years old. And it wasn't a lot to have them also install the humidistat. (Fireboy wanted to install it; he said it would be easy peasy to install).

We saved bundles of money on our air conditioning last summer .. just cost a few dollars a month to run. (I am vague on details, I haven't unpacked my Florida stuff since we returned to Canada two weeks ago). I think I'm still in denial that I'm back in Canada.

Whoops .. sorry Topicop :police: .. just realized this thread is about attic fans and not humidistats. Me bad.

The Solar Guys installed a solar fan for us in early 2005. Last year the motor bearings went out and it was howling like a wounded animal. Solar Guys honored the Mfr 5 year warranty and replaced the fan motor quickly and with no charge. Normally the solar fan is very quiet and on occasion I have climbed up on the roof to see if it's really working. The solar fans may not move as much air as a wired fan but it does the job and you can feel the difference in the attic when it's running.

For those not around during the summer be mindful how
 

high you set the thermostat to keep the AC from running.
The humidity does collect the higher the temp is set.
We set ours at 80 which runs minimally allowing some dehumidification on the really hot days.

BTK

Another consideration regarding solar attic fans is that having a fan installed increases the life of your roof according to the Solar Guys who installed mine. Also, along the same lines, ************************ installed my humidistat and I saved about $100/month on the a/c bill when the house was empty during the summer months last year.
Another fabulous job done by our "Handie".

Does the fan effect humidity?
 

If it lowers humidity I would think that would effect the feels like temp.
Could a thermostat shut off be wired between the panel and the fan or better yet a switch over to feed into house lines for gain. Not an electrical engineer just thinkin outside the box.