Tempstar Hot Surface Igniter for TDE075B12A1 — Silicon Nitride Igniter/Sensor | Ships Today
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Overview
This is the genuine OEM hot surface igniter/sensor (part number 1009524) for the Tempstar TDE075B12A1 gas furnace. On each call for heat the furnace control energizes this igniter; it glows red-hot and ignites the gas at the burners. This igniter uses a durable silicon-nitride element that resists the thermal shock and brittleness that plague older silicon-carbide (carborundum) igniters, giving longer service life and more reliable ignition. The igniter is the single most common cause of a furnace that will not light. If your furnace clicks, the inducer runs, but the burners never ignite — or the unit locks out after several ignition attempts — the igniter is the first part to check.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1009524 |
| Description | Hot Surface Igniter / Sensor |
| Type | Hot Surface Igniter (HSI) |
| Element | Silicon Nitride |
| Brand | Tempstar (ICP / Heil) |
| Supply Voltage | 120 VAC |
| Fitment | OEM Replacement |
Compatibility
Fits the Tempstar TDE075B12A1 furnace and other ICP-family models (Tempstar, Heil, Comfortmaker, Arcoaire) that use the 1009524 hot surface igniter/sensor assembly. Match the connector and bracket style to your existing igniter before installing.
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 burner-compartment service panel.
- Document — Photograph the igniter position, bracket, and wire routing before disconnecting.
- Remove — Unplug the igniter connector and remove the mounting screw(s); handle the old igniter by the ceramic base only.
- Install — Mount the new igniter without touching the element with bare fingers, set the correct gap to the burner, and reconnect the plug per your photo.
- Test — Restore gas and power, then run a heat cycle and confirm the igniter glows and the burners light promptly.
Signs You Need a Replacement
- Furnace inducer runs but burners never ignite.
- Igniter does not glow, or glows weak/uneven.
- Visible cracks, chips, or white spots on the element.
- Furnace locks out after 3 failed ignition attempts.
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