The sound of the fan whirring from your vents can be almost as comforting as the heat coming out of them. It’s good to know there’s a device in your home to keep you and yours healthy and comfortable during the coldest months, and that sound is your indication that everything is (probably) running smoothly. In time, though, your heater may start to play a different tune.
What if the noise from the heater is not what you expect to hear? It deserves some investigation. Even if the heat still seems to be working, even if you don’t feel particularly annoyed by the sound, it could be an indication of trouble looming. Here’s what those noises could mean.