Tempstar Hot Surface Igniter for T8MPL075B12B2 — HSI Furnace Ignition | Ships Today
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Overview
This is the genuine OEM hot surface igniter (HSI, part number 1172533) for the Tempstar T8MPL075B12B2 gas furnace, also associated with the Honeywell VR8205S snap-mount gas valve (part 1175705) used on this platform. The hot surface igniter heats to roughly 2,000°F on each heat call to light the main burners, while the control board verifies flame and holds the gas valve open. A failed HSI is a leading cause of no-heat calls: the inducer and igniter may energize but the burners never light, or the furnace ignites then locks out on a flame fault. Hot surface igniters are fragile, thermally cycled wear items and are commonly replaced during furnace service.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1172533 (igniter) |
| Related Part | 1175705 (Honeywell VR8205S gas valve) |
| Type | Hot Surface Igniter (HSI) |
| Brand | Tempstar (ICP / Heil) |
| Voltage | 120V |
| Fit | OEM Replacement |
Compatibility
Engineered as the factory replacement igniter for the Tempstar T8MPL075B12B2 furnace and shared across ICP-built Tempstar, Heil, and Comfortmaker gas furnaces using this hot surface ignition system with the Honeywell VR8205S gas valve. Match your existing igniter's bracket and connector before installing.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
- Access — Remove the burner-compartment service panel.
- Document — Photograph the igniter position, bracket orientation, and wiring before disconnecting.
- Remove — Unplug the igniter connector and remove the mounting screw, handling the old igniter by its ceramic base only.
- Install — Mount the new igniter without touching the element with bare fingers and reconnect the connector per your photo.
- Test — Restore power and watch a full ignition cycle to confirm the igniter glows and the burners light and stay lit.
Signs You Need a Replacement
- Inducer runs but burners never ignite.
- Furnace lights briefly, then locks out on a flame fault.
- Cracks, hot spots, or no glow visible on the igniter element.
- Repeated ignition retries and hard lockouts.
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