this specific part is calibrated for Natural Gas (NAT)

utilizing a 4-way pilot valve to provide positive reversals even at low pressure differentials

Key Benefits: OEM Precision Fit: Engineered specifically for Carrier and Bryant models to eliminate vibration and rattling often found with universal aftermarket guards

It functions effectively in retrofit applications where a third cooling stage is added

Lennox 80W53 Pressure Switch 322056-301 this specific part is calibratedThe Lennox 80W53 Pressure Switch is a critical OEM replacement part engineered for high efficiency furnace applications. This single pole single throw (SPST) switch is factory calibrated to a 0. 68" WC (water column) set point, ensuring precise monitoring of the inducer motor's draft. A failure in this component often results in a sequence of operation lockout, as the control board must verify proper venting before allowing gas valve ignition.