OEM Lennox Ignition Control Board — 12W64
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The genuine OEM Lennox 12W64 ignition control board is the brain of your furnace's ignition and safety sequence. On compatible Lennox furnaces it manages the timed startup — energizing the inducer, verifying the pressure switch, opening the gas valve, firing the igniter, and confirming flame — while continuously monitoring safety inputs throughout each heating cycle.
Common failure symptoms: The furnace won't ignite or produces no response on a call for heat, the igniter or inducer fails to sequence, the blower runs continuously or not at all, diagnostic LED fault codes flash on the board, or the unit locks out intermittently. Burnt relays, scorched traces, or a failed onboard fuse are typical.
Why OEM matters: The Lennox 12W64 is programmed with the exact ignition timing and safety logic your furnace requires. Substitute boards can miscue the ignition sequence, bypass critical safeties, or fail to communicate with sensors. Installing the factory OEM board guarantees correct operation, safety compliance, and warranty coverage.
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