OEM Lennox Limit Switch — 92L15
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30-Day Returns
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The genuine OEM Lennox 92L15 limit switch is a temperature-activated safety control that guards against furnace overheating. It monitors the heat exchanger and plenum temperature, shutting off the burners if the unit runs too hot — protecting your Lennox equipment from heat exchanger damage and unsafe operation.
Common failure symptoms: furnace short cycling on and off, burners firing then dropping out while the blower keeps running, no-heat conditions, or a limit fault code on the control board. Nuisance trips often point to a weak or out-of-spec limit switch, though restricted airflow should always be ruled out first.
OEM matters because the 92L15 is set to an exact trip and reset temperature specified for your Lennox furnace. A generic switch with the wrong setpoint can allow dangerous overheating or cause constant nuisance shutdowns. This factory-matched part restores precise overheat protection and dependable heating cycles.
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