optimizing system performance under severe load conditions

detecting clogged filters

Compatible with a wide range of motor models across Series 71

meeting MIL-PRF-25567 standards

the 5H0735930000 is compatible with widely used Modine gas-fired heaters

Lennox 79J89 Limit Switch optimizing system performance under severeThe Lennox 79J89 Limit Switch is a critical OEM replacement part designed for precise thermal regulation in Lennox residential and commercial furnaces. This 140 170F AUTO Limit Switch functions as a primary safety mechanism, monitoring internal plenum temperatures to prevent heat exchanger damage or unsafe operating conditions. Engineered with a 170F cut out temperature and a 140F cut in temperature, this automatic reset limit switch ensures the