Installed this nine days ago. Extremely quiet. Cannot hear it from the inside of the house! It is worth the money up front because you will never see it on your electric bill. My husband was able to install this himself. We are happy we purchased it. We saw other units comparable to this one on line that had to have a separate thermostat purchased which added to the cost. This is a ready to go self contained unit. Just install it and it does the rest. No wiring required! Highly recommended.
Extremely quiet fan highly recommended!