ICP Hot Surface Igniter Kit for RGS121HEAB0AAAA — With Wiring | Ships Today

Overview

This is a genuine ICP hot surface igniter (OEM 1171306) with its matching wiring kit (OEM 1188370) for the Tempstar/Heil RGS121HEAB0AAAA gas furnace. The hot surface igniter is the silicon/nitride element that glows red-hot when energized to ignite the gas at the burners on each heating cycle. Because the element is repeatedly heated and cooled, it gradually weakens, cracks, and eventually fails to glow — the single most common cause of a furnace that clicks but will not light. The included wiring kit ensures a clean, correct electrical connection without splicing brittle or damaged factory leads. Igniters are fragile; handle only by the ceramic base and never touch the element.

Specifications

Compatibility

Designed for the ICP/Tempstar/Heil RGS121HEAB0AAAA gas furnace and related RGS-series furnaces using a hot surface ignition system. Confirm your furnace uses a hot surface igniter (not a spark or standing pilot) before ordering.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter.
2. Access — Remove the burner-compartment service panel.
3. Document — Photograph the igniter position and wiring routing before disconnecting.
4. Remove — Unplug the igniter lead, remove the mounting screw, and lift out the old igniter — handle by the base only.
5. Install — Mount the new igniter without touching the element, then connect it with the supplied wiring kit.
6. Test — Restore power and watch a full ignition cycle to confirm the element glows and lights the burners.

Signs You Need a Replacement

• Furnace clicks but burners never ignite
• Igniter does not glow or glows weakly
• Visible cracks or breaks in the ceramic element
• Repeated ignition lockouts after several attempts

Shipping & Returns

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