ICP Hot Surface Igniter Kit for RGS121HSBA0AAAA — With Wiring Harness | Ships Today

Overview

This is the genuine OEM hot surface igniter for the ICP / Tempstar / Heil RGS121HSBA0AAAA gas furnace (OEM 1171306), offered here with the matching igniter wiring kit (OEM 1188370). The igniter is a ceramic-element component that glows red-hot when energized at the start of each heating cycle, lighting the burners as the gas valve opens. Hot surface igniters are brittle and degrade with every thermal cycle, making them one of the most frequent no-heat failures. The included wiring kit ensures a clean electrical connection and prevents the chafed or melted leads that often accompany an aged igniter. Handle the ceramic element by its base only — skin oils and physical contact shorten its life.

Specifications

Compatibility

Fits ICP RGS121HSBA0AAAA and related Tempstar, Heil, and Comfortmaker gas furnaces using this hot surface igniter platform. Verify the igniter mounting and element shape against your existing part.

Installation Guide

1. Safety First — Shut off the furnace at the switch and breaker, close the gas supply, and verify zero voltage with a multimeter.
2. Access — Remove the furnace burner-compartment door.
3. Document — Photograph the igniter bracket and wiring before disconnecting.
4. Remove — Unplug the igniter connector and unscrew the igniter from its bracket, handling it by the ceramic base only.
5. Install — Mount the new igniter, route and connect the supplied wiring kit, and avoid touching the glow element.
6. Test — Restore gas and power, start a heat call, and confirm the igniter glows and the burners light promptly.

Signs You Need a Replacement

• Furnace blower runs but no heat is produced
• Igniter no longer glows during the ignition sequence
• Visible cracks or breaks in the ceramic element
• Furnace 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.