ICP Hot Surface Igniter for RGS121HDCA0AAA — Furnace Ignition | Ships Today

Overview

This OEM hot surface igniter (part #1171306) with companion wiring kit (#1188370) lights the burners in your ICP RGS121HDCA0AAA gas furnace. On a call for heat, the control board sends voltage to the igniter, which glows white-hot to ignite the gas as it flows across the burners. As a wear item exposed to repeated thermal cycling, igniters become brittle and eventually crack or burn out. Common failure symptoms include no ignition, a furnace that clicks but never lights, repeated lockouts after several ignition attempts, and a visibly cracked or discolored igniter element.

Specifications

Compatibility

Fits the ICP / Heil / Tempstar RGS121HDCA0AAA gas furnace. The included wiring kit ensures a proper plug connection to the furnace control board.

Installation Guide

1. Safety First — Shut off gas and power, verify zero voltage with a multimeter.
2. Access — Remove the furnace burner compartment door.
3. Document — Photograph the igniter mounting and wire routing.
4. Remove — Unplug the igniter harness and remove the mounting screw; handle the old igniter by its ceramic base only.
5. Install — Mount the new igniter without touching the element, then connect the wiring kit.
6. Test — Restore gas and power, then watch a full ignition cycle.

Signs You Need a Replacement

• Furnace clicks but burners never light
• Repeated ignition lockouts
• Visibly cracked or eroded igniter element
• No glow when a heat call is initiated

Shipping & Returns

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