The bath fan we're replacing is fairly typical. It's located in a ceiling with an accessible unfinished attic above. The fan is properly wired and ducted with 3-in. uninsulated ductwork to the roof.

The ceramic heating element and fan are all well hidden inside the case ... sockets that are probably already installed in your bathroom, but doesn’t require a ground pin on the wall socket.

We also know that it’s uncomfortable to step out of the shower into a frigid bathroom. So if you choose to put a space heater ...