ICP Hot Surface Igniter Kit for RGS121SFBB0AAAA — With Wiring Harness | Ships Today

Overview

This is the genuine OEM hot surface igniter kit for the ICP / Heil / Tempstar RGS121SFBB0AAAA gas furnace, including the igniter (OEM 1171306) and its dedicated wiring kit (OEM 1188370). On each heat call the control board sends voltage to the igniter, which glows red-hot to ignite the gas at the burners. The element is brittle and degrades with every cycle — a cracked or oxidized igniter is the single most common cause of no-heat furnace failures. The included wiring harness ensures a clean, correct electrical connection so the new igniter receives full voltage.

Specifications

Compatibility

Designed for the ICP RGS121SFBB0AAAA and related RGS-series Heil, Tempstar, and Comfortmaker gas furnaces using a hot surface ignition system. Match the igniter mount and connector to your original before installing.

Installation Guide

1. Safety First — Disconnect electrical power and verify zero voltage with a multimeter; shut off the gas if servicing burners.
2. Access — Remove the burner compartment service panel.
3. Document — Photograph the igniter position and wiring routing before disconnecting.
4. Remove — Unplug the harness and unscrew the cracked igniter — handle only by the ceramic base, never the element.
5. Install — Mount the new igniter without touching the element, then connect the new wiring kit.
6. Test — Restore power and gas, start a heat cycle, and confirm the igniter glows and burners light.

Signs You Need a Replacement

• Furnace blows cold air with no ignition
• Visible crack or break in the igniter element
• Igniter no longer glows on a heat call
• Repeated lockouts after several ignition attempts

Shipping & Returns

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