OEM Lennox Ignition Control Board — 63W26
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The genuine OEM Lennox 63W26 ignition control board governs the ignition sequence in your Lennox furnace, ensuring the burners light safely and reliably on every heating call. It controls the igniter, opens the gas valve at the correct moment, verifies flame through the flame-sensing circuit, and locks out the system if ignition is not confirmed. This precise coordination protects your home from unburned gas while delivering dependable, on-demand heat.
Common failure symptoms include a furnace that fails to ignite, repeated ignition lockouts, an igniter that glows but never lights the burners, delayed or rough ignition, short-cycling, or diagnostic error codes indicating a failed flame-sense or ignition fault. A defective board may also cause the furnace to attempt ignition several times before shutting down entirely.
Why OEM matters: Ignition control is a safety-critical function, and the 63W26 is engineered with the exact ignition timing, flame-sensing thresholds, and lockout logic specified for your Lennox equipment. Aftermarket boards can misjudge these parameters, resulting in unsafe operation, nuisance lockouts, or ignition failure. The authentic Lennox part guarantees correct sequencing, proper fit, and the safe, code-compliant performance your furnace was designed to deliver.
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