Tempstar Hot Surface Igniter for T9MPV075F12A3 — 120V Silicon Nitride Ignitor/Sensor | Ships Today

Overview

This OEM Tempstar hot surface igniter/sensor (part number 1009524, "IGNITOR/SENSOR HSP SK") is the silicon nitride ignition component that lights the burners on your T9MPV075F12A3 gas furnace. When a heat call is received, the control board energizes the igniter with 120V; it glows to roughly 2,000°F and ignites the gas as it leaves the burners. This service kit also performs flame-sensing duty, confirming a stable flame so the control board keeps the gas valve open. A failed igniter is one of the most common causes of no-heat calls — the furnace will draft, click, and lock out without firing. Symptoms include the burners failing to light, repeated ignition retries, short cycling on hard lockout, or a cracked/discolored igniter element on inspection.

Specifications

Compatibility

Engineered as a direct-fit replacement for the Tempstar T9MPV075F12A3 variable-speed gas furnace. The same igniter platform is shared across ICP-family equipment, including Heil, Comfortmaker, and Arcoaire 9MPV-series furnaces of the same vintage. Always confirm against your unit's parts list before installing.

Installation Guide

1. Safety First — Switch off the furnace at the service disconnect and thermostat. Verify zero voltage at the igniter terminals with a multimeter before proceeding.
2. Access — Remove the furnace blower/burner access panel.
3. Document — Photograph the igniter mounting position and wire routing before disconnecting anything.
4. Remove — Unplug the igniter connector, remove the mounting screw, and carefully withdraw the old igniter from the burner assembly. Handle only by the ceramic base — never touch the element.
5. Install — Seat the new igniter so the element sits in the burner flame path without touching metal, secure the screw, and reconnect per your photo.
6. Test — Restore power and run a heat cycle. Confirm the igniter glows, the burners light promptly, and the flame holds without lockout.

Signs You Need a Replacement

• Furnace draws and clicks but burners never light
• Repeated ignition retries ending in hard lockout (no heat)
• Visible crack, hot spot, or discoloration on the igniter element
• Open-circuit (infinite resistance) reading across the igniter terminals

Shipping & Returns

Ships same day on orders placed before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.