ICP Hot Surface Igniter for RGS121LECB0AAA — Furnace Ignitor Kit | Ships Today

Overview

This OEM hot surface igniter is the ignition source for the ICP/Heil/Tempstar RGS121LECB0AAA gas furnace. On a call for heat, the control board energizes this igniter, which glows red-hot to light the burners. The kit includes OEM igniter 1171306 and igniter wiring kit 1188370 for a complete factory-correct replacement. Hot surface igniters are fragile silicon-nitride or silicon-carbide elements that degrade and crack with every heating cycle, and a failed igniter is one of the most common reasons a furnace runs the inducer but never lights. Installing this exact-fit kit restores dependable ignition and avoids the lockouts that come with a worn element.

Specifications

Compatibility

Directly fits the ICP/Heil/Tempstar/Comfortmaker RGS121LECB0AAA furnace and is shared across many RGS-family models. Confirm your model number and igniter mounting style before ordering.

Installation Guide

1. Safety First — Disconnect power and shut off the gas, then verify zero voltage with a multimeter.
2. Access — Remove the furnace front service panel.
3. Document — Photo the igniter bracket and wiring before disconnecting.
4. Remove — Unplug the igniter connector, remove the mounting screw, and lift out the old igniter without touching the element.
5. Install — Mount the new igniter, install the wiring kit, and reconnect per your photo, handling the element by the ceramic base only.
6. Test — Restore gas and power, run a heat cycle, and confirm the igniter glows and the burners light.

Signs You Need a Replacement

• Inducer runs but burners never ignite.
• Cracked, blistered, or broken igniter element.
• No glow at the start of the heat cycle.
• Intermittent ignition or repeated furnace lockouts.

Shipping & Returns

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