The enclosed body design minimizes the entry of dust and debris

reducing vibration and extending the service life of the blower motor

During troubleshooting

Constructed with a rugged aluminum die-cast housing and corrosion-resistant internal components

When performing a Reznor heater fan blade replacement

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