OEM Lennox Ignitor & Flame Sensor Assembly — 13H27
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30-Day Returns
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The genuine OEM Lennox 13H27 ignitor and flame sensor assembly ignites the gas at the burners and confirms that a flame is present so your Lennox furnace can run safely. The hot surface ignitor glows to light the burner on each heating cycle, while the integrated flame sensor verifies combustion and signals the control board to keep the gas valve open.
Common failure symptoms: A worn 13H27 typically causes no ignition and no heat, a furnace that clicks and tries to start but never lights, or short cycling where the burner ignites then shuts off within seconds because the flame isn't being sensed. Cracked or eroded ignitors and oxidized flame sensors are among the most common heating-season failures.
Why OEM matters: Ignitor resistance, element geometry, and sensor placement are matched to your Lennox burner and ignition sequence. The factory 13H27 assembly drops in with correct wiring and mounting, ensuring reliable first-try ignition and dependable flame proving. Aftermarket ignitors often have mismatched resistance and shorter service life.
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