ICP Hot Surface Igniter Kit for RGS121HSCA0AAA — OEM with Wiring | Ships Today

Overview

This OEM hot surface igniter (part 1171306) with its matching wiring kit (part 1188370) lights the burners in your ICP / Tempstar / Heil RGS121HSCA0AAA gas furnace. On a heat call the control board energizes the igniter, which glows white-hot to ignite the gas as the valve opens. Hot surface igniters are the most common furnace failure point — the brittle silicon-carbide or nitride element cracks from thermal cycling, oil contamination from bare-handed handling, or simple age. A failed igniter is the usual cause of "blower runs but no heat" lockout faults.

Specifications

Compatibility

Built for the ICP-family RGS121HSCA0AAA and shared Tempstar, Heil, and Comfortmaker gas furnaces using this igniter platform. The included wiring kit ensures a clean plug-and-play connection to the control board.

Installation Guide

1. Safety First — Disconnect power and verify zero voltage with a multimeter. Shut off gas.
2. Access — Remove the furnace burner/control access panel.
3. Document — Photograph the igniter bracket position and harness routing.
4. Remove — Unplug the igniter harness and remove the mounting screw. Handle the new element by the ceramic base only — never touch the hot surface.
5. Install — Mount the new igniter, connect the wiring kit, and confirm the element sits in the burner flame path.
6. Test — Restore gas and power, then watch a full ignition cycle to confirm a clean light-off.

Signs You Need a Replacement

• Furnace blower runs but produces no heat
• No glow visible at the igniter on a heat call
• Cracked or chipped igniter element
• Repeated ignition-lockout fault codes on the control board

Shipping & Returns

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