OEM Lennox Limit Switch — 36M62
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
The genuine OEM Lennox 36M62 limit switch is a safety control that senses heat exchanger temperature in your Lennox furnace and interrupts the burners before the unit can overheat. Set to Lennox's exact trip and reset thresholds, it lets normal heating cycles run smoothly while standing guard against dangerous temperature spikes.
Common failure symptoms: A worn or miscalibrated limit switch commonly causes short-cycling, burners that ignite and quickly shut down, the blower running nonstop with no heat, or a limit fault on the control board. A switch that fails open will prevent the furnace from firing, while one that responds slowly compromises the safety it's meant to provide.
Why OEM matters: Because this is a temperature-critical safety component, the switch's rating must match your furnace precisely. The factory-specified 36M62 provides the correct trip point, probe length, and mounting for your Lennox equipment, avoiding the nuisance trips and safety gaps that come with generic substitutes. Protect your system with the part Lennox specifies. In stock and ready to ship same day.
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