Can't say I've ever heard them doing it when they cool down, but when the sun hits them in the morning, it can happen. If they're mounted to an aluminum facia, that can also transfer noise when expand ... read more
First of all, will the electrical box be able to support the new fan? A paddle fan takes a special box rated for the extra weight. You can get one for an "old work" set-up and use the same ceiling cut ... read more