this component is built to resist corrosion in high-humidity environments typical of air handling units

Upon cooling by approximately 30°F

45" WC SPST switch

providing instantaneous burner ignition

specialized orifice wrenches

Lennox 92L21 Pressure Switch this component is built toReplace your faulty inducer safety circuit with the Lennox 92L21 Pressure Switch, a precise OEM furnace replacement part cataloged under Lennox R20293412. This single pole single throw (SPST N. O.) switch is factory calibrated to actuate at 1. 61" W. C., ensuring the draft inducer motor maintains the specific static pressure required for safe combustion and flue gas venting. Designed with dual 1 4" barb connections, this component provides a secure