OEM Lennox Limit Switch with Gasket — 97L01
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The genuine OEM Lennox 97L01 limit switch ships complete with its mounting gasket and serves as a high-temperature safety control for your furnace. It continuously monitors plenum and heat exchanger temperatures, cutting power to the burners whenever heat exceeds the safe operating range — a vital safeguard against overheating and heat exchanger damage.
When this switch fails, you may experience the furnace short cycling, shutting down mid-cycle, the blower running nonstop, or no heat at all. The included gasket ensures a proper air seal at the mounting point, preventing air leakage that could otherwise skew temperature readings and cause erratic operation.
The OEM Lennox 97L01 is calibrated to your furnace's exact trip temperature and comes with the correct factory gasket for a clean, sealed installation. Aftermarket alternatives often lack the matching gasket or accurate setpoint, risking nuisance trips or unsafe operation. Choose this factory-original assembly for guaranteed fit and reliable protection of your Lennox equipment.
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