Universal Application: Compatible with a wide range of Carrier

this is the direct functional replacement for legacy Barber Colman 2353-501 models

allowing for immediate troubleshooting before hardware failure occurs

effectively replacing outdated or failed SmartValve systems in Sterling unit heaters

Lennox 36K28 Limit Switch 320074-702 Universal Application: Compatible with 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