ICP Hot Surface Igniter for X8MPT075F14A2 Two-Stage Furnace — OEM HSI | Ships Today

Overview

The hot surface igniter (OEM #1172533) is the ignition element on your ICP / Tempstar / Heil X8MPT075F14A2 two-stage gas furnace. On a heat call, the control board energizes this igniter; it glows red-hot (roughly 1,800–2,500°F) and lights the gas burners as the valve opens. The HSI is the most common furnace no-heat failure — the brittle silicon-carbide/silicon-nitride element fatigues a little with every cycle until it finally cracks. Telltale symptoms are a furnace that clicks and runs the inducer but never lights, no glow through the sight port, repeated ignition lockouts with a flashing fault code, or cold air from the registers. This OEM HSI is a direct-fit replacement rated for 120V and matched to the X8MPT ignition sequence.

Specifications

Compatibility

Engineered for the ICP-family X8MPT075F14A2 two-stage gas furnace and shared across the Tempstar, Heil, Comfortmaker, and Day & Night badge-engineered equivalents using the same burner assembly. Confirm the part number on your existing igniter and the model/serial tag in the blower compartment before ordering.

Installation Guide

1. Safety First — Shut off the gas supply valve and disconnect power at the breaker. Verify zero voltage with a multimeter at the furnace control.
2. Access — Remove the lower burner-compartment service panel.
3. Document — Photograph the igniter bracket position and the ignition harness before disconnecting.
4. Remove — Unplug the igniter connector, remove the mounting screw, and withdraw the old igniter without touching the element. Note its insertion depth and angle to the burner.
5. Install — Handle the new igniter only by the ceramic base (skin oils crack the element), seat it at the same depth/angle, secure the screw, and reconnect the harness per your photo.
6. Test — Restore gas and power, start a heat call, and watch a full cycle to confirm the igniter glows, burners light, and the flame sensor proves flame without lockout.

Signs You Need a Replacement

• Furnace attempts ignition (inducer and gas valve click) but never lights.
• No orange glow visible through the burner sight port during a heat call.
• Visible cracks, blisters, or white spots on the igniter element.
• Repeated ignition-failure lockouts after three retries with a flashing control-board code.

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 — if it doesn't fit your X8MPT075F14A2, we make it right.