The Lennox 13W23 is an OEM automatic (AUTO) limit switch engineered to protect Lennox furnaces from overheating conditions. Designed to open the circuit when temperatures exceed the safe operating threshold and automatically reset once temperatures return to normal, this limit switch is a critical safety component in residential and light commercial heating systems.
Product Overview
The 13W23 limit switch monitors heat exchanger and plenum temperatures, shutting down the burner or blower circuit if unsafe temperature levels are detected. The AUTO reset function means the switch will restore normal operation once the temperature drops back within the safe range — no manual intervention required.
Key Features
- Temperature range: 80°F to 140°F operating range
- AUTO reset function — automatically resets when temperature returns to safe level
- OEM Lennox replacement part — direct fit for compatible Lennox furnace models
- Provides overheat protection for furnace heat exchangers and plenums
- Helps prevent damage to heat exchangers, blower motors, and related components
- Reliable bimetal or disc-type sensing element for accurate temperature response
Application
- Compatible with select Lennox residential and light commercial gas furnaces
- Installs in the furnace plenum or heat exchanger area as a high-limit safety device
- Ideal for service replacement of worn or failed OEM limit switches
Why Choose the Lennox 13W23?
Using genuine OEM replacement parts like the Lennox 13W23 ensures proper fit, accurate calibration, and reliable performance. A properly functioning limit switch is essential to furnace safety — it prevents overheating that can crack heat exchangers and create carbon monoxide hazards. Keep your system running safely with this direct OEM replacement.
