What is a rollout switch and why do you need one?
If your furnace suddenly stops working on a freezing night, you might find yourself wondering what is a rollout switch and how it affects your heating system. It's one of those tiny components that you probably never even noticed until your house started getting chilly. While it looks like a simple, inexpensive piece of metal and plastic, it's actually one of the most critical safety features tucked away inside your HVAC unit. ...