Tempstar Hot Surface Igniter for T8DNL075F16A1 — Silicon Nitride HSI | Ships Today
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Overview
This OEM hot surface igniter (part number 1009524, IGNITOR/SENSOR HSP SK) is the ignition component for the Tempstar T8DNL075F16A1 75,000 BTU gas furnace. When the thermostat calls for heat, the furnace control board energizes this 120V igniter, which heats to over 2,000°F to light the burners. A failed igniter is the single most common cause of no-heat calls. Symptoms include the furnace failing to fire, the igniter glowing but not lighting, repeated ignition lockouts, or no glow at all. This silicon-nitride-style hot surface igniter is more durable than older silicon carbide designs and resists the cracking and brittleness that lead to nuisance failures.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1009524 |
| Type | Hot Surface Igniter / Sensor |
| Brand | Tempstar (Heil / ICP family) |
| Voltage | 120V |
| Fitment | OEM Replacement |
| Application | Gas Furnace Ignition |
Compatibility
Engineered as a direct-fit OEM replacement for the Tempstar T8DNL075F16A1 gas furnace. Because Tempstar, Heil, Comfortmaker, and other ICP-family furnaces share components, this igniter also fits many comparable 75K BTU models in the same product line. Always confirm your existing part number before ordering.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker. Shut off the gas supply. Verify zero voltage with a multimeter before proceeding.
- Access — Remove the furnace burner/control access panel.
- Document — Photograph the igniter mounting position and wiring connector before disconnecting.
- Remove — Unplug the igniter harness connector, remove the mounting screw, and carefully withdraw the old igniter — handle only by the ceramic base, never the element.
- Install — Seat the new igniter so the element sits in the burner flame path, secure the screw, and reconnect the harness. Avoid touching the element with bare fingers.
- Test — Restore gas and power, then run a heat cycle and confirm the igniter glows and the burners light promptly.
Signs You Need a Replacement
- Furnace blower runs but burners never ignite
- Igniter shows no glow or only a dim, uneven glow
- Visible cracks, chips, or white deposits on the element
- Furnace locks out after several failed ignition attempts
Shipping & Returns
Ships same day on orders placed before 3 PM CST. 30-day returns on unused parts. 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