Lennox 12W49 Pressure Switch L99H008 this comprehensive kit allows for

this comprehensive kit allows for a complete internal overhaul without the need to remove the valve body from the line

The hermetic design and integrated sensing bulb allow for consistent performance in various mounting orientations

Relying on genuine Carrier blower wheels protects the longevity of the furnace’s heat exchanger and the air conditioner’s compressor by ensuring consistent

Universal Mounting: Includes a flatted break-off shaft and standard mounting brackets for seamless replacement of OEM Robertshaw or Ranco controls

Lennox 12W49 Pressure Switch L99H008 this comprehensive kit allows forThe 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