Tempstar Hot Surface Igniter for T8MPN150J20B2 — HSI | Ships Today
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Overview
This OEM hot surface igniter (HSI, part #1172533) is the component that ignites the gas burners on your Tempstar T8MPN150J20B2 furnace. On a call for heat, the control board energizes the igniter, which glows white-hot and lights the burner gas as the gas valve (compatible OEM valve #1175705, VR8205S) opens. Hot surface igniters are brittle and degrade over time from repeated thermal cycling. The most common symptom of a failed igniter is a furnace that runs the inducer and blower but produces no heat — you'll hear the sequence start but the burners never light. A cracked, broken, or no-longer-glowing igniter is the typical culprit behind no-heat calls.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1172533 |
| Type | Hot Surface Igniter (HSI) |
| Brand | Tempstar |
| Compatible Gas Valve | 1175705 (VR8205S) |
| Function | Burner Ignition |
| Fitment | OEM |
Compatibility
Direct-fit replacement for the Tempstar T8MPN150J20B2 gas furnace. Commonly used across the ICP family (Tempstar, Heil, Comfortmaker, Arcoaire) furnaces using the same HSI ignition system. Handle the igniter element only by its ceramic base — skin oils can cause premature failure.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter. Shut off the gas supply.
- Access — Remove the furnace burner compartment access panel.
- Document — Photograph the igniter position and wiring connector before disconnecting.
- Remove — Unplug the igniter connector, remove the mounting screw, and carefully withdraw the old igniter without touching adjacent surfaces.
- Install — Mount the new igniter handling it only by the ceramic base, then reconnect the wiring per your photo.
- Test — Restore gas and power, then watch a full ignition cycle to confirm the igniter glows and the burners light.
Signs You Need a Replacement
- Inducer and blower run but burners never ignite (no heat)
- Visible cracks or breaks in the igniter element
- Igniter no longer glows during the ignition sequence
- Furnace locks out after several 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