The Lennox 45M67 (LB-96381A) High-Temperature Limit Switch is an OEM Lennox safety control designed to protect your furnace from overheating. This temperature limit switch monitors internal heat levels and opens the circuit when temperatures rise above safe operating thresholds. It ensures reliable furnace shutdown in abnormal conditions, preventing heat exchanger damage, reducing fire risk, and supporting long-term system reliability.

This replacement high-temp limit switch is manufactured to Lennox factory specifications for precise temperature response, secure mounting, and seamless compatibility with Lennox residential gas furnaces. It is an ideal OEM replacement for failed or intermittent limit switches causing issues such as short cycling, no-heat conditions, or nuisance shutdowns.

 

Key Features:

• Genuine Lennox OEM temperature limit switch
• Factory-set temperature rating for reliable overheat protection
• Helps prevent furnace damage by interrupting burner operation
• Compatible with select Lennox gas furnace models
• Direct-fit replacement for LB-96381A
• Durable construction designed for long service life

 

Typical Applications:

• Lennox residential furnaces using limit switch LB-96381A
• Overheat protection and burner cut-off control
• Troubleshooting short-cycling or limit-induced shutdowns