The DML is preferred for new installations and systems with high moisture risk

reducing unnecessary service calls for manual reset furnace switches

this outboard bearing ensures optimal shaft alignment and reduces vibration

the internal contacts will close to resume cooling operations

ensuring long-term structural integrity and consistent thermal output

Lennox 80W58 Pressure Switch 323055-751 The DML is preferred forFor service calls involving intermittent furnace shutdowns or inducer blower faults, the Lennox 80W58 Pressure Switch is the direct OEM replacement engineered to maintain system integrity. This single stage air pressure switch features a precise . 75" WC factory setpoint, critical for verifying proper draft and venting before the ignition sequence begins. Designed for compatibility with high efficiency Lennox, Armstrong, and Ducane gas furnaces, this