Tempstar Hot Surface Igniter for T8MPL075B12A1 — Silicon Nitride HSI/Sensor | Ships Today
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Overview
This OEM hot surface igniter (HSI/sensor kit, part number 1009524) is the factory-specified ignition component for the Tempstar T8MPL075B12A1 gas furnace. The igniter receives 120V from the control board at the start of each heating cycle, glows red-hot, and ignites the gas at the burners. A cracked, chipped, or aged igniter is the single most common cause of no-heat calls. Typical failure symptoms include the furnace cycling on the call for heat with the inducer running but no flame, a glow that is dim or absent, or repeated lockouts after several ignition attempts. This silicon-nitride-style element is durable and resistant to thermal-cycling fatigue.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1009524 |
| Type | Hot Surface Igniter / Sensor |
| Brand | Tempstar (Heil / ICP) |
| Voltage | 120V |
| Application | Gas Furnace Ignition |
| Fit | OEM Direct Replacement |
Compatibility
Engineered as a direct OEM replacement for the Tempstar T8MPL075B12A1 furnace and shared across many ICP/Heil/Comfortmaker single-stage gas furnace platforms that use the 1009524 igniter/sensor assembly. Always confirm the part number on your existing igniter before ordering.
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 lower service/blower panel to expose the burner assembly.
- Document — Photograph the igniter wiring and bracket position before disconnecting.
- Remove — Unplug the igniter connector and remove the mounting screw; lift the old igniter out carefully without touching the ceramic element.
- Install — Mount the new igniter in the same orientation, handling only the ceramic base, and reconnect the wiring per your photo.
- Test — Restore gas and power, then run a full heat cycle to confirm the igniter glows and the burners light reliably.
Signs You Need a Replacement
- Furnace inducer runs but burners never ignite (no-heat).
- Igniter does not glow or glows weakly/unevenly.
- Visible cracks, chips, or white spots on the ceramic element.
- Repeated ignition lockouts or short cycling on a call for heat.
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