ICP Hot Surface Igniter for X9MPD075F12B1 — Silicon Nitride HSI | Ships Today
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Overview
This OEM hot surface igniter (HSI) is the direct ignition source for the ICP / Tempstar / Heil X9MPD075F12B1 gas furnace. On a call for heat, the control board energizes the igniter (OEM part 1172533) until it glows white-hot, lighting the main burners as the gas valve opens. A failed igniter is one of the most common no-heat causes: the silicon-nitride element becomes brittle with thermal cycling and eventually cracks, leaving the furnace unable to light. Typical failure symptoms include the furnace running its full ignition sequence with no flame, the igniter glowing weakly or not at all, repeated lockouts after several ignition attempts, or hard cold-start clicking with no burner light. Because this furnace pairs the igniter with a dedicated flame sensor (1172543) and a snap-mount gas valve (1172541 VR8205S), a clean igniter is essential to reliable ignition and proper flame proving.
Specifications
| Spec | Value |
|---|---|
| Primary Part Number | 1172533 (IGNITOR HSI) |
| Related OEM Parts | 1172543 (Flame Sensor), 1172541 (Gas Valve VR8205S) |
| Type | Hot Surface Igniter, silicon nitride |
| Brand | ICP / Tempstar / Heil |
| Voltage | 120 VAC |
| Fits Model | X9MPD075F12B1 |
Compatibility
Engineered as the factory ignition component for the ICP/Tempstar/Heil X9MPD075F12B1 75,000 BTU gas furnace. Confirm your model and igniter mounting bracket against the existing part before ordering. This is an OEM-grade replacement that mounts and wires identically to the original.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker, shut off the gas, and verify zero voltage with a multimeter.
- Access — Remove the furnace burner-compartment service panel.
- Document — Photograph the igniter wiring and bracket orientation before disconnecting.
- Remove — Unplug the igniter connector and remove the mounting screw; lift the brittle igniter out without touching the ceramic element with bare fingers.
- Install — Set the new igniter so the element sits in the burner flame path, secure the screw, and reconnect the plug per your photo. Handle by the ceramic base only.
- 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 cycles through ignition but burners never light (no flame).
- Igniter glows dim, uneven, or not at all.
- Repeated ignition lockouts after 3+ attempts.
- Visible cracks or white spots on the ceramic element.
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