MarcG

I love the idea... My concern is; if the room is connected to the central heat you are removing cool air during the summer and bringing in cold air during the winter, making it difficult to keep the temp in the room constant.

That is exactly what I'm wondering as well. I'm going to run it for a while and try to see if it's helping or hurting.

I had/have the same one. It's sitting in the attic waiting for the weather to change. I've used several types of fans to vent air outside. But the problem I've run into is they're not only powerful enough to pull the air outside, but they've been pulling air from outside into the house as well. Any little unsealed space in windows, doors, etc is an open invitation. Security and rain are the two issues I ran into with that fan, as well as it just didn't have enough power. So I just use it now when the weather's cooled off at night to pull that cool air into the house.

Deb