OEM Lennox Armstrong Ducane Integrated Furnace Control Board — 52M46
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Same-Day Ship
30-Day Returns
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The 52M46 is a genuine OEM Lennox integrated furnace control (IFC) board used in Armstrong Air and Ducane gas furnaces. This board is the brain of the furnace — it manages the ignition sequence, monitors safety limits and flame sensing, controls the inducer and blower motors, and coordinates the gas valve to deliver safe, reliable heat on every call from the thermostat.
When a control board fails, you'll often see symptoms such as the furnace failing to ignite, short cycling, the blower running constantly or not at all, no response to the thermostat, or fault/lockout LED codes flashing at the board. Cracked solder joints, blown relays, or a failed onboard fuse are common culprits.
Choosing the OEM 52M46 board matters because it is calibrated to the exact ignition timing, blower profiles, and safety parameters your Armstrong or Ducane furnace was engineered around. Aftermarket substitutes can misread flame signals or mistime the sequence, causing nuisance lockouts. This factory-direct replacement guarantees correct fit, terminal layout, and firmware for dependable operation and full compatibility.
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