Homeowners looking for a way to cool their house during the summer months might do well to consider a QuietCool whole house fan. It can be used in conjunction with Air Conditioning systems and is supposed to cut AC costs.
We just installed one in an attic with a two-speed switch for a customer and it was pretty easy and didn’t involve any framing.
Home Depot’s price was less than Amazon and arrived within a few days to my door. It moves a lot of air!
p.s. We’re not making any money on mentioning this product; it’s just good for our business to educate folks.
https://quietcoolsystems.com/products/classic/