ICP Hot Surface Igniter for WFML090C048A1 — Furnace HSI | Ships Today

Overview

This OEM hot surface igniter (HSI), part 1176919, is the ignition source for your ICP / Heil / Tempstar WFML090C048A1 gas furnace. On a call for heat, the control board sends 120V to the igniter, whose silicon-carbide element glows red-hot to ignite the burner gas. The igniter is one of the highest-wear components in a furnace and a leading cause of intermittent and no-heat failures — the inducer spins up and the gas valve may click, but without a working igniter the burners never light and the board eventually locks out. The brittle element also cracks easily from thermal cycling or rough handling.

Specifications

Compatibility

Direct OEM replacement for the ICP/Heil/Tempstar/Comfortmaker WFML090C048A1 furnace. Verify your OEM part number (1176919) before ordering, as ICP uses several igniter styles across its furnace lines.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker, shut off the gas, and verify zero voltage with a multimeter.
2. Access — Remove the furnace burner-compartment service panel.
3. Document — Photograph the igniter's position and wiring before disconnecting.
4. Remove — Unplug the igniter connector, remove the mounting screw, and lift out the old igniter. Handle the new igniter by its ceramic base only — never touch the element with bare fingers.
5. Install — Mount the new igniter so the element sits in the burner flame path, then 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 inducer runs but burners never ignite (no-heat).
• Visible cracks, chips, or white blistering on the igniter element.
• Igniter does not glow during the ignition sequence.
• Repeated lockouts after several failed ignition attempts.

Shipping & Returns

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