System Safety: Restores the airtight integrity of the combustion chamber

As the updated successor to the legacy 621096 and 6210960 models

Durable Construction: Features silver cadmium oxide contacts to prevent sticking and carbon buildup

this HVAC duct sensor handles everything from standard air handling unit discharge to extreme return air conditions

Lennox 49K71 Limit Switch R-134A System Safety: Restores the airtightThe Lennox 49K71 Limit Switch is a critical safety component engineered for precision temperature monitoring in high output furnace and air handler applications. This OEM furnace limit switch is factory calibrated to an L220F trip point, ensuring the electrical circuit breaks immediately if internal temperatures exceed safe operating parameters. As a manual reset limit control, it requires a technician to physically intervene after a high limit event,