Lennox 14T66 Pressure Switch 320819-301 the 22-143 ensures precise air-signal

the 22-143 ensures precise air-signal management and prevents backflow

extending the operational life of your HVAC assembly while ensuring consistent air distribution throughout the home

5 MFD / 370V run capacitor for high-starting torque and stable operational amperage

Can I install this valve in a horizontal pipe run

While this is a universal SPDT pressure switch

Lennox 14T66 Pressure Switch 320819-301 the 22-143 ensures precise air-signalThe Lennox 14T66 Pressure Switch is a critical dual stage safety component engineered for 90% efficiency modulating gas furnaces. As a veteran technician knows, maintaining the correct pressure differential is non negotiable for safe combustion. This OEM Lennox replacement part is factory calibrated to operate within a specific water column range of 1. 00" to 0. 25" WC, ensuring the inducer motor pulls the required vacuum before the ignition sequence