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This OEM Tempstar hot surface igniter (part number 1009524, HSP SK) lights the burners on your TNE050B12A1 furnace. On a call for heat, the ignition control sends voltage to the igniter, which glows red-hot to ignite the gas as it leaves the burners. Hot surface igniters are brittle and degrade with every heating cycle — the silicon carbide element develops hairline cracks and high-resistance hot spots until it can no longer reach ignition temperature. The result is a furnace that clicks, drops out, and goes into lockout after several failed ignition attempts, often leaving you with no heat on the coldest days. Replacing an aged igniter restores reliable, on-demand ignition.
| Spec | Value |
|---|---|
| OEM Part Number | 1009524 |
| Type | Hot Surface Igniter (HSI), SK style |
| Function | Igniter / Sensor (HSP) |
| Brand | Tempstar (ICP / Heil family) |
| Element | Silicon Carbide |
| Fitment | OEM Direct Replacement |
Direct-fit hot surface igniter for the Tempstar TNE050B12A1 furnace and related ICP, Heil, and Comfortmaker gas furnace platforms that use the SK-style HSI. Match the mounting bracket and connector to your existing igniter before installing.
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.