ICP Hot Surface Igniter for WFML090B042A1 — OEM Furnace Ignition | Ships Today

Overview

This OEM hot surface igniter (part 1176919) is the genuine ignition component for the ICP / Tempstar / Heil WFML090B042A1 gas furnace, supplied with the matching HSI snap-in valve component (part 1176929, 36J24618). The hot surface igniter is what starts every heating cycle: on a call for heat, the control board sends voltage to the igniter, which glows red-hot and lights the gas as it crosses the burners. Over thousands of cycles the silicon-carbide element gradually weakens and eventually cracks, at which point the furnace can no longer ignite and locks out. Typical failure symptoms include no heat on a call, burners that fail to light, repeated ignition retries, a furnace that runs the inducer and blower but never fires, and a visibly cracked or carbon-coated element. Replacing a worn igniter is one of the most common furnace repairs and restores reliable ignition.

Specifications

Compatibility

Direct OEM fit for the ICP / Tempstar / Heil WFML090B042A1 gas furnace. The 1176919 igniter is shared across many ICP-built WFML-series furnaces sold under the Tempstar, Heil, and Comfortmaker brands. Confirm your model and OEM part number before ordering.

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 access panel.
3. Document — Photograph the igniter wiring and mounting position before disconnecting anything.
4. Remove — Unplug the igniter connector, remove the mounting screw, and withdraw the old igniter without touching the ceramic element.
5. Install — Mount the new igniter in the exact original position and reconnect the wiring per your photo. Never touch the silicon-carbide element with bare fingers.
6. Test — Restore gas and power, run a heat call, and confirm the igniter glows and the burners light smoothly.

Signs You Need a Replacement

• Furnace runs the inducer and blower but never ignites.
• Visibly cracked, chipped, or carbon-coated igniter element.
• Repeated ignition retries followed by a hard lockout.
• No glow from the igniter during a heat call.

Shipping & Returns

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