During troubleshooting

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

reducing vibration and extending the service life of the blower motor

Genuine OEM Nordyne part ensures 1:1 compatibility with original equipment wiring harnesses and mounts

Optimized Heat Transfer: The belt type construction maximizes surface contact with the compressor shell for efficient thermal conductivity

Lennox 73W33 Pressure Switch 326058-758 During troubleshootingThe 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