Tempstar Hot Surface Igniter for T9MPV075F12C1 — HSI Ignition | Ships Today
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Overview
This is the OEM hot surface igniter (HSI, Part Number 1172533) for the Tempstar T9MPV075F12C1 gas furnace. On each call for heat the control board energizes the igniter, which glows red-hot to ignite the burner gas. The igniter is one of the most frequently replaced furnace wear parts because the brittle element is thermally cycled hundreds of times per season and eventually cracks or develops hairline fractures. A failed igniter produces a no-heat lockout: the inducer runs, the gas valve may briefly open, but the burners never light, and the board typically flashes an ignition-failure fault. Handle the new igniter only by its ceramic base — skin oils on the element can shorten its life. This OEM HSI restores correct resistance and glow characteristics for dependable ignition.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1172533 |
| Type | Hot Surface Igniter (HSI) |
| Brand | Tempstar (ICP / Heil) |
| Function | Burner Ignition |
| Related Part | 1172822 (Gas Valve, 2-Stage VR8205Q) |
| Fits Model | T9MPV075F12C1 |
Compatibility
Designed for the Tempstar T9MPV075F12C1 furnace and the matching ICP/Heil/Comfortmaker 9-series variable-speed furnaces using HSI igniter 1172533. The same model also uses gas valve 1172822 (Honeywell VR8205Q 2-stage); order that separately if the valve is also being serviced.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter and shut off the gas supply.
- Access — Remove the burner/control compartment door.
- Document — Photograph the igniter's wire connector and mounting orientation before removing.
- Remove — Unplug the igniter connector, remove the mounting screw(s), and carefully withdraw the old igniter without touching the element.
- Install — Mount the new igniter handling it only by the ceramic base, position the element in the burner flame path, and reconnect the harness.
- Test — Restore gas and power, then run a heat cycle to confirm the igniter glows and the burners light promptly.
Signs You Need a Replacement
- Furnace runs the inducer but burners never ignite (no-heat lockout).
- Visible crack, blister, or break in the igniter element.
- Igniter no longer glows during the ignition sequence.
- Control board reports an ignition-failure or lockout fault code.
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