But before you reach for the thermostat, consider a much simpler, lower-cost fix: your ceiling fan. A ceiling fan can make a room feel up to 4 degrees cooler, so you can dial back your air ...

If that doesn’t fix your ceiling fan problem, flip the circuit breaker off and check with a noncontact voltage tester to see whether the socket is being supplied with power.

Whether your ceiling fan has developed a mild quiver, or is shaking so hard it looks (and sounds) like it’s about to take flight, it’s best not to put off making this repair.

Q: I installed a ceiling fan in my bedroom, and it works fine when it’s on low speed. When I run it on high, it shakes like a bowl of gelatin during a 10-point earthquake.