Tempstar Hot Surface Igniter for T8MPN050B12A1 — Silicon Nitride HSI/Sensor Kit | Ships Today
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Overview
This genuine OEM hot surface igniter (part number 1009524, IGNITOR/SENSOR HSP kit) is the ignition component for the Tempstar T8MPN050B12A1 gas furnace. On each call for heat, the furnace control board sends line voltage to the igniter, which glows red-hot and ignites the gas at the burners. The silicon nitride element is durable and resistant to the cracking and thermal shock that plague older carbide igniters. A failed igniter is one of the most common causes of no-heat calls — symptoms include the furnace clicking and the inducer running but the burners never lighting, or the system locking out after several failed ignition attempts. This kit includes the igniter and flame-sensing hardware needed for reliable, code-compliant operation.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1009524 |
| Type | Hot Surface Igniter / Sensor Kit (HSI) |
| Element | Silicon Nitride |
| Brand | Tempstar (ICP / Heil) |
| Voltage | 120V |
| Fits Model | T8MPN050B12A1 |
| Fitment | Genuine OEM |
Compatibility
Engineered as the factory ignition component for the Tempstar T8MPN050B12A1 gas furnace. Because ICP builds Tempstar, Heil, Comfortmaker and other family brands on shared platforms, part 1009524 also services many comparable ICP-built furnaces. Always confirm your unit's part number against the rating plate 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 furnace burner/service panel.
- Document — Photograph the igniter wiring and bracket position before disconnecting.
- Remove — Unplug the igniter harness and remove the mounting screw. Lift the old igniter out carefully — never touch the new element with bare fingers, as skin oils cause hot spots and premature failure.
- Install — Mount the new igniter so the element sits correctly in the burner flame path, reinstall 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 within the normal trial-for-ignition period.
Signs You Need a Replacement
- Igniter does not glow on a call for heat
- Visible cracks, chips, or white blistering on the element
- Furnace locks out after 3 ignition attempts (rapid click sequence)
- Inducer and gas valve cycle but burners never ignite
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