Tempstar Hot Surface Igniter for T9UHX080J12A2 — Silicon Nitride HSI | Ships Today

Overview

This OEM hot surface igniter (HSI) is the ignition source for your Tempstar T9UHX080J12A2 gas furnace. When the thermostat calls for heat, the control board energizes the igniter, which heats to roughly 2,000°F to light the gas at the burners. Its silicon nitride element resists the repeated thermal shock that cracks lesser igniters, the most common cause of a furnace that runs the inducer and clicks but never ignites. OEM part number 1172533 (IGNITOR HSI).

Specifications

Compatibility

Engineered as a direct OEM fit for the Tempstar T9UHX080J12A2 furnace and other ICP/Heil family models that use the 1172533 igniter. Always confirm against your unit's parts list before ordering.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the burner compartment service panel.
3. Document — Photograph the igniter bracket and wiring before disconnecting.
4. Remove — Unplug the igniter connector and remove the mounting screw. Handle the old igniter by its ceramic base only.
5. Install — Mount the new igniter without touching the element, reattach the screw, and reconnect the plug per your photo.
6. Test — Restore power and run a heat cycle; confirm the igniter glows and the burners light cleanly.

Signs You Need a Replacement

• Furnace inducer runs and clicks but burners never ignite.
• Visible cracks or a broken element on the old igniter.
• Intermittent no-heat calls that resolve when the unit cools.
• Igniter no longer glows during the ignition sequence.

Shipping & Returns

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