Lennox 36K28 Limit Switch 30067439-890 Universal Compatibility: Serves as a

Universal Compatibility: Serves as a drop-in replacement for the KMC M574-3520 and Barber Colman 2474-230

the high-tension lead may be failing to carry the necessary voltage

Engineered with a rugged brass body and a durable EPDM diaphragm

Technicians should verify the lead-end or shaft-end orientation against the existing unit's schematic before installation

Universal Compatibility: Specifically designed as the drop-in Erie 30-118-A replacement for AG series actuators and Classic G/L dampers

Lennox 36K28 Limit Switch 30067439-890 Universal Compatibility: Serves as aThe Lennox 36K28 is a critical safety component designed for precise thermal regulation within residential and light commercial Lennox furnace systems. This automatic limit switch is engineered to monitor heat exchanger temperatures, effectively interrupting the burner circuit if internal conditions exceed the safety threshold. Operating with a fixed range of 160 190F, it provides a vital fail safe against overheating caused by restricted airflow or