OEM Lennox Furnace Control Board — 68M64
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
The genuine OEM Lennox 68M64 furnace control board is the integrated brain of your Lennox gas furnace, orchestrating the ignition sequence, gas valve, inducer motor, blower speeds, and flame-sensing safety circuits. It reads thermostat calls, verifies pressure switches and limits, and manages precise on/off timing to deliver safe, efficient, and comfortable heating cycles tailored to your Lennox equipment.
Common failure symptoms include no heat, a furnace that won't ignite, the blower running constantly or not at all, short cycling, erratic operation, or blinking LED diagnostic fault codes. Failed relays, blown onboard fuses, cracked solder joints, and heat- or surge-related component damage are the usual culprits.
Why OEM matters: the 68M64 is programmed with the exact ignition timing, blower profiles, and safety logic your furnace model requires. Aftermarket boards can introduce mismatched sequencing that causes nuisance lockouts or defeats flame-safety protections. Choose the factory-direct replacement for guaranteed fit, rated performance, and dependable heat all winter long.
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