providing reliable gas flow control and diagnostic LED feedback for troubleshooting pilot outages or sensor failures

the 0131M00981S adjusts its RPM dynamically to meet real-time heating and cooling demands

Installing this on a Natural Gas water heater will lead to improper combustion and hazardous operating conditions

Can I use a generic seal instead of the OEM 383600

Streamlined Installation: Built-in junction box with red lead wires reduces labor time on the job site

Lennox 12W49 Pressure Switch 320734-701 providing reliable gas flow controlThe 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