The tubing is usually clear or black plastic and can sometimes be brittle, so handling the component requires care to avoid cracking the ports. The pressure switch is a critical component in this system, acting as a guardian that ensures the furnace exhaust system is clear and functioning correctly before allowing the burners to fire.
Furnace Pressure Switch Location on New Models
It is usually mounted near the top of the unit, close to where the inducer motor is located. A clogged flue pipe, a cracked heat exchanger, or a failing inducer motor can all cause the switch to trip.
Typical Location on Modern Furnaces On the majority of modern gas furnaces, the pressure switch is situated on the side of the blower compartment. High-efficiency condensing furnaces, which produce significant condensation, often have their pressure switch located lower on the unit to accommodate the drainage systems associated with the secondary heat exchanger.
Furnace Pressure Switch Location New Models
Visual Identification Identifying the component visually is straightforward once you know what to look for. Understanding the Role of the Pressure Switch The pressure switch is not a component that generates heat or directly controls the flame; rather, it is a safety sensor.
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