How to Fix Furnace Problems With a Stuck Pressure Switch?

Answer The pressure switch on a furnace detects when the blower motor is running. Among other features, the switch prevents cold air from blowing through the ductwork until the burner or electric element ... Read More »

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The Pressure Switch Is Stuck in a Closed Furnace While It's On?

A gas furnace uses a pressure switch to gauge the level of hot air in the heat exchanger. When the pressure reaches a level sufficient to trip the switch, the blower motor activates to push warm ai... Read More »

How to Set Up a Pressure Switch for a Goodman LP Furnace?

A Goodman furnace fueled by liquid propane, like other LP furnace models, works with a pressure switch to detect when the internal air temperature is hot enough to activate the blower motor. This f... Read More »

Signs of a Bad Pressure Switch in a Furnace?

A well-designed furnace has safety features incorporated into the equipment to prevent problems. Among the safety devices in a furnace is the pressure switch. When the furnace begins the ignition s... Read More »

What is a pressure switch on a furnace?

A furnace pressure switch is a device that reacts to changes in the pressure of what's inside the furnace. The switch lets electric current flow through the furnace while the pressure is normal. If... Read More »