Tempstar Hot Surface Igniter for T9MVX080J20A1 — OEM 1172533 HSI | Ships Today

Overview

This is the OEM hot surface igniter (HSI), part number 1172533, for the Tempstar T9MVX080J20A1 two-stage variable-speed gas furnace. The HSI glows red-hot on each heating call to light the gas at the burners. Over repeated heat cycles the brittle igniter element develops cracks or loses the ability to reach ignition temperature, which leaves the furnace unable to produce heat. Common symptoms are a furnace that runs the inducer and clicks but never lights, a unit that locks out after several failed attempts, or an igniter that no longer glows. Swapping in this OEM HSI restores dependable ignition.

Specifications

Compatibility

Direct-fit replacement for the Tempstar T9MVX080J20A1 80,000 BTU two-stage variable-speed furnace. This igniter is shared across the ICP/Tempstar/Heil/Comfortmaker 9MVX-series furnaces. Verify against your unit's parts list before ordering.

Installation Guide

1. Safety First — Shut off gas and disconnect electrical power. Verify zero voltage with a multimeter before working.
2. Access — Remove the lower furnace door to expose the burner assembly.
3. Document — Photograph the igniter's mounting position and wire routing before disconnecting.
4. Remove — Unplug the igniter connector, remove the mounting screw, and withdraw the old igniter without touching the new element with bare fingers.
5. Install — Mount the new HSI in the same position and reconnect the wiring per your photo.
6. Test — Restore gas and power, run a heat cycle, and confirm the igniter glows and the burners light promptly.

Signs You Need a Replacement

• Furnace runs the inducer and clicks but never ignites.
• Igniter no longer glows or glows weakly.
• Visible cracks or breaks in the igniter element.
• Furnace locks out after repeated failed ignition attempts.

Shipping & Returns

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