Lennox 52M42 Limit Switch 323055-751 utilizing this genuine HVAC pilot

utilizing this genuine HVAC pilot assembly is essential for maintaining equipment certification and ensuring reliable cold-weather startups

Optimized Efficiency: Demand-based logic prevents "ghost" defrost cycles

providing superior regulation compared to unbalanced alternatives

or "red dust" iron powder emissions indicative of fit failure

Professional technicians recognize this as the official replacement for legacy part numbers 626561R

Lennox 52M42 Limit Switch 323055-751 utilizing this genuine HVAC pilotThe Lennox 52M42 Limit Switch is a critical safety component designed for precise thermal regulation within Lennox residential furnaces. As a genuine Lennox OEM replacement part, this 180 40F auto limit switch is engineered to monitor heat exchanger temperatures, effectively preventing hazardous overheating and potential equipment damage. This furnace high limit switch features a fixed set point of 180F for the opening temperature and an automatic