The enclosed body design minimizes the entry of dust and debris

reducing vibration and extending the service life of the blower motor

During troubleshooting

and commercial roller grill series 20 through 75A

Lennox 73W33 Pressure Switch 326058-758 The enclosed body design minimizesThe Lennox 73W33 is a high precision dual stage pressure switch engineered for specific Lennox furnace models and air handlers. This OEM replacement pressure switch serves as a critical safety component, monitoring the pressure differential within the combustion blower. With setpoints calibrated at . 68 . 35 WC, it ensures proper venting and blower performance before allowing the ignition sequence to proceed. As a two stage pressure switch, it manages