OEM Lennox Furnace Limit Switch — 69W41
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
The genuine OEM Lennox 69W41 limit switch is a temperature-sensing safety control mounted on your furnace's heat exchanger or plenum. It continuously monitors supply-air temperature and cuts power to the burners if the unit overheats, protecting the heat exchanger from thermal damage and preventing unsafe operating conditions in your Lennox gas or electric furnace.
Common failure symptoms: When a limit switch fails, you may experience short cycling (the burner igniting then shutting off repeatedly), the blower running continuously, no heat despite the ignition sequence starting, or a furnace that trips into a lockout fault. A switch that stays open will prevent the burner from firing, while one that fails closed defeats critical overheat protection.
Why OEM matters: The Lennox 69W41 is calibrated to a specific temperature set point and trip range engineered for your exact furnace model. Generic substitutes with the wrong cut-out temperature can cause nuisance trips or, worse, fail to shut down an overheating unit. Choosing the factory-specified OEM part guarantees correct calibration, proper terminal fit, and safe, code-compliant operation.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days