Typical Location on Modern Furnaces On the majority of modern gas furnaces, the pressure switch is situated on the side of the blower compartment. This motor creates negative pressure in the heat exchanger, venting exhaust gases safely out of the home.
Where Is Pressure Switch On Furnace Located: Visual ID & Typical Spots
Visual Identification Identifying the component visually is straightforward once you know what to look for. It is usually mounted using brackets and features between one and three ports (tubing connections) on its body.
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 Type Typical Pressure Switch Location Number of Tubes Standard Efficiency (80% AFUE) Top or side of the blower compartment Two (Inducer and Venting) High Efficiency (90%+ AFUE) Lower front or side of the unit Three (Inducer, Venting, and Drain) Old/Masonry Furnaces Near the combustion chamber or rear One or Two Common Issues Related to the Switch Because the pressure switch is directly linked to the inducer motor and the venting system, issues often stem from related components rather than the switch itself.
Where the Pressure Switch is Located on a Furnace
The tubing is usually clear or black plastic and can sometimes be brittle, so handling the component requires care to avoid cracking the ports. 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.
More About Where is pressure switch on furnace
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