So, How Does a Furnace Pressure Switch Work Anyway?
If you've ever spent a freezing winter night listening to your heater click and groan without actually producing any heat, you might have found yourself asking how does a furnace pressure switch work and why it seems to be the part everyone blames when things go wrong. It's one of those small, unassuming plastic discs tucked away inside your furnace cabinet, but don't let its size fool you. This little guy is basically the "bouncer" of your heating system. If the conditions aren't perfect, it isn't letting anyone into the party, and by "party," I mean the actual fire that keeps your toes warm. ...