Your furnace isn’t just a box that magically makes heat — it’s a system of critical components working together to keep your home comfortable and safe. In today’s episode, we dive into the five most important parts of a gas furnace: the Blower Motor, Control Board, Inducer Motor, Pressure Switch, and Gas Valve.

I’ll explain what each part does, how they communicate with each other during startup, and what common failures look like in the field. You’ll learn what noises, smells, or symptoms should never be ignored — and how catching problems early can save you serious money.

If you want to be a smarter homeowner (or a better tech), this episode will help you understand what’s really happening behind the panels.