Tempstar Hot Surface Igniter for T8MPV100J20C1 — Silicon Carbide HSI | Ships Today

Overview

This is the OEM hot surface igniter (HSI) for the Tempstar T8MPV100J20C1 two-stage gas furnace. The igniter (OEM part 1172533) is a silicon-carbide element that energizes on a call for heat, glowing red-hot to ignite the gas at the burners. It is one of the most common furnace failure points because the element is brittle and degrades with every heating cycle. This listing covers the igniter used in the C1 revision of this model, which pairs with the 1172822 two-stage gas valve assembly (Honeywell VR8205Q). Symptoms of a failed igniter include the furnace blower running with no flame, repeated ignition lockouts, no warm air, and a visibly cracked or broken igniter element.

Specifications

Compatibility

Fits the Tempstar T8MPV100J20C1 90%+ AFUE two-stage furnace and shared ICP/Heil platform variants using this igniter. Always confirm against your unit's part list before ordering.

Installation Guide

1. Safety First — Disconnect power and shut off the gas, then verify zero voltage with a multimeter.
2. Access — Remove the burner-compartment service panel.
3. Document — Photo the igniter bracket and wiring before disconnecting.
4. Remove — Unplug the igniter connector and remove the mounting screw; lift the old igniter out without touching the new element.
5. Install — Mount the new igniter, handling only the ceramic base, and reconnect the plug per your photo.
6. Test — Restore gas and power, then run a heat cycle to confirm ignition and flame.

Signs You Need a Replacement

• Furnace blower runs but burners never light
• Repeated ignition lockout (3 tries then shutdown)
• Visibly cracked, chipped, or broken igniter element
• No glow visible when the unit calls for heat

Shipping & Returns

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