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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
Relying on genuine Carrier blower wheels protects the longevity of the furnace’s heat exchanger and the air conditioner’s compressor by ensuring consistent
Can I use an aftermarket board instead of the CESO130028-00
Lennox 12W49 Pressure Switch L99H008 DSI (Direct Spark Ignition)The 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
