BCFURNACE
773-138
+5% Tax • Shipping calculated at checkout.
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LENNOX PRESSURE SWITCH 0.51" WC
Pickup available at 75 Blue Mountain St #3
Usually ready in 24 hours

LENNOX PRESSURE SWITCH 0.51" WC Air Pressure Switch, Air Proving
+5% Tax • Shipping calculated at checkout.
U.S. Duties/Taxes, if applicable, may be due at time of delivery.
Pickup available at 75 Blue Mountain St #3
Usually ready in 24 hours
Ensure the safe and efficient operation of your heating system with this premium air pressure switch. Designed as a critical safety component for forced-air furnaces, this air proving switch monitors the negative pressure created by the inducer motor to verify proper airflow before allowing the ignition cycle to begin. Calibrated to a precise 0.51" WC (water column) set point, it acts as a safeguard against dangerous conditions such as blocked vents, flue obstructions, or inducer motor failure. This high-reliability sensor is an essential replacement part for resolving furnace startup issues and ensuring your HVAC equipment meets original performance standards for combustion safety.
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