ICP Hot Surface Igniter for VNK125N20A1 — Silicon Carbide HSI Kit | Ships Today
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Overview
This OEM hot surface igniter (HSI) is the ignition source for your ICP / Heil / Tempstar VNK125N20A1 gas furnace. When the thermostat calls for heat, the control board energizes this silicon-carbide igniter, which heats to over 2,000°F to light the burner gas. This is a hot-surface igniter/sensor kit (OEM part 1009524) designed as a direct factory replacement. A failed igniter is the single most common cause of a no-heat furnace: if the element cracks, ages, or burns out, the burners never light, the board locks out, and the system blows cold air. Symptoms include the furnace clicking but not firing, repeated ignition retries, or a hard lockout after several failed attempts.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1009524 |
| Type | Hot Surface Igniter / Sensor Kit |
| Element Material | Silicon Carbide |
| Brand | ICP / Heil / Tempstar |
| Voltage | 120V |
| Application | Gas Furnace Ignition |
| Fitment | OEM Direct Replacement |
Compatibility
Engineered as a direct OEM fit for the ICP / Heil / Tempstar / Comfortmaker VNK125N20A1 gas furnace. ICP-family furnaces share components across the Heil, Tempstar, and Comfortmaker brands, so this igniter also services many models built on the same platform. Always confirm OEM part number 1009524 against your unit before ordering.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker, and shut off the gas. Verify zero voltage with a multimeter.
- Access — Remove the furnace burner/service panel to expose the burner assembly and igniter.
- Document — Photograph the igniter bracket position and wiring connector before disconnecting.
- Remove — Unplug the igniter wire harness, remove the mounting screw, and carefully withdraw the old igniter. Never touch the new element with bare fingers — skin oils cause premature failure.
- Install — Mount the new igniter in the exact position, secure the screw, and reconnect the harness per your photo.
- Test — Restore gas and power, run a heat cycle, and confirm the igniter glows and the burners light cleanly.
Signs You Need a Replacement
- Furnace clicks or attempts ignition but burners never light
- No-heat call with the blower running cold air
- Visible cracks, blistering, or white spots on the igniter element
- Furnace locks out after 3 failed ignition retries
Shipping & Returns
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.
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