ensuring long-term structural integrity and consistent thermal output

or PC series units

reducing unnecessary service calls for manual reset furnace switches

always verify inlet/outlet sizing (1/2" x 3/4") and the 3

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

Lennox 80W58 Pressure Switch 323055-751 ensuring long-term structural integrity andFor 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