Tempstar Hot Surface Igniter/Sensor for T8MPL050B12A1 — HSI | Ships Today
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Overview
This OEM hot surface igniter/sensor (HSP, part #1009524) ignites the gas burners on your Tempstar T8MPL050B12A1 furnace and supports flame-proving on each heat cycle. When the thermostat calls for heat, the control board energizes the element until it glows white-hot and lights the gas as the valve opens. Because the silicon-nitride element is heated and cooled on every cycle, it is among the most common no-heat failure points in the furnace. Watch for a furnace that clicks and tries to start but never lights, a dim or absent glow, repeated ignition lockouts, or visible cracking and scaling on the element. Installing the correct OEM igniter restores reliable light-off and proper flame detection.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1009524 |
| Type | Hot Surface Igniter / Sensor (HSP) |
| Brand | Tempstar (ICP / Heil) |
| Element | Silicon Nitride |
| Fit | OEM Direct Replacement |
| Application | Gas Furnace Ignition |
Compatibility
Direct-fit replacement for the Tempstar T8MPL050B12A1 furnace and other ICP-family models (Heil, Comfortmaker, Arcoaire) using igniter 1009524. Verify the mounting bracket and connector match your existing igniter before installing.
Installation Guide
- Safety First — Shut off the gas, disconnect power at the switch and breaker, and verify zero voltage with a multimeter.
- Access — Remove the burner-compartment service panel.
- Document — Photograph the igniter position, bracket, and wiring connector before disconnecting.
- Remove — Unplug the igniter lead and remove the mounting screw; grip the old element by its ceramic base only.
- Install — Mount the new igniter without touching the element directly and reconnect the lead per your photo.
- Test — Restore gas and power, then observe a full ignition cycle to confirm a strong glow, clean light-off, and stable flame.
Signs You Need a Replacement
- Furnace clicks and attempts ignition but never lights
- Dim glow or no glow at the igniter
- Repeated lockouts after several failed ignition attempts
- Visible cracks, blistering, or white scaling on the element
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