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This genuine OEM hot surface igniter (HSI, part number 1172533) is the ignition source for the Tempstar T8MPN075F16B2 gas furnace. When the thermostat calls for heat and the gas valve opens, the control board energizes this igniter; it glows white-hot to light the main burners. Hot surface igniters are brittle silicon-carbide or silicon-nitride elements that degrade with every thermal cycle and eventually crack or lose conductivity. A failed igniter is one of the most common no-heat causes — the inducer runs and the board sequences, but the burners never light. This listing pairs the HSI with the related VR8205S snap-mount gas valve assembly (1175705) referenced for this model.
| Spec | Value |
|---|---|
| Part Number | 1172533 (Igniter), 1175705 (Valve) |
| Type | Hot Surface Igniter |
| Brand | Tempstar (ICP/Heil/Comfortmaker) |
| Voltage | 120V |
| Valve Ref | VR8205S Snap HSI |
| Fit | OEM Direct Replacement |
Factory-correct ignition component for the Tempstar T8MPN075F16B2 furnace and ICP/Heil/Comfortmaker siblings built on the same burner platform. Always match the igniter mounting tab orientation and connector to your original before installing.
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.