ICP Hot Surface Igniter for WPG3422090RKB1 — Furnace Ignitor Assembly | Ships Today

Overview

This is a genuine OEM hot surface igniter assembly (part number 1175974) for the ICP / Tempstar / Heil WPG3422090RKB1 package unit. The hot surface igniter is the component that lights the burners on the heating side of the system. When the control board calls for heat, line voltage is sent to the igniter element, which glows red-hot in a few seconds; the gas valve then opens and the glowing element ignites the gas stream at the burners. Because the element is heated and cooled on every single heat cycle, it gradually becomes brittle and eventually cracks — making the igniter one of the most common no-heat failure points. Typical symptoms of a failed igniter include a furnace that tries to start but never lights, a unit that clicks and cycles without producing heat, or an igniter that no longer glows when you watch it through the sight window. The element is also fragile, so a hairline crack from age or rough handling will stop it from heating even if it looks intact.

Specifications

Compatibility

This igniter assembly is the factory-specified ignition component for the ICP WPG3422090RKB1 package unit and related Tempstar, Heil, and Comfortmaker gas-heat systems built on International Comfort Products platforms. Confirm part number 1175974 and the bracket/connector orientation before installing.

Installation Guide

1. Safety First — Disconnect power at the breaker and shut off the gas supply, then verify zero voltage with a multimeter at the igniter leads.
2. Access — Remove the burner compartment service panel to expose the igniter.
3. Document — Photograph the igniter position, bracket, and wire connector before disconnecting.
4. Remove — Unplug the igniter connector and remove the mounting screw, then carefully lift the old igniter out without touching the element.
5. Install — Mount the new igniter by its bracket only — never handle the ceramic element with bare fingers — and reconnect the wire harness per your photo.
6. Test — Restore power and gas, start a heat call, and confirm the element glows bright orange and the burners light within the normal trial-for-ignition window.

Signs You Need a Replacement

• Furnace cycles on a heat call but never ignites (no flame).
• Igniter no longer glows when viewed through the sight port.
• Visible cracks, chips, or white spots on the ceramic element.
• System locks out after repeated failed ignition attempts.

Shipping & Returns

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