Lennox 12W49 Pressure Switch L99H008 the L62GB-3 features a thermoelectric

the L62GB-3 features a thermoelectric power unit that triggers the interlock

DSI (Direct Spark Ignition)

This OEM York replacement part is critical for residential and commercial units utilizing electronically commutated motor technology to maintain optimal airflow

This igniter is compatible with various Lochinvar

preventing mechanical binding

Lennox 12W49 Pressure Switch L99H008 the L62GB-3 features a thermoelectricThe Lennox 12W49 Pressure Switch (Model R20558702) is a critical OEM safety component engineered for precise combustion air monitoring in Lennox gas furnaces. This SPST pressure switch is factory calibrated to actuate at 1. 35" W. C., ensuring the inducer motor generates sufficient draft for safe venting before the ignition sequence begins. Designed for professional grade reliability, it features a standardized 1 4" barb connection for secure