ICP Hot Surface Igniter for RGS121LDCA0AAA — 120V Silicon Nitride with Wiring Kit | Ships Today

Overview

This is the genuine OEM hot surface igniter assembly (OEM #1171306) for the ICP/Heil/Tempstar RGS121LDCA0AAA gas furnace, supplied with the matching igniter wiring kit (OEM #1188370). The hot surface igniter is the component that glows red-hot on a call for heat and ignites the gas burners. Operating on 120V line voltage, it is the single most common furnace failure part — repeated heating and cooling cycles eventually crack the brittle element, leaving you with a furnace that clicks, draws air, but never lights. Replacing the igniter is the fastest way to restore reliable ignition without a service call.

Specifications

Compatibility

Engineered as a direct-fit replacement for the ICP/Heil/Tempstar RGS121LDCA0AAA furnace and other models that specify igniter part 1171306. The included wiring kit (1188370) ensures a clean plug-and-play connection.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the burner compartment service panel.
3. Document — Photograph the igniter bracket and wiring before disconnecting.
4. Remove — Unplug the igniter harness and remove the mounting screw(s); handle the old igniter by the ceramic base only.
5. Install — Mount the new igniter, never touching the silicon nitride element with bare fingers, and connect the new wiring kit per your photo.
6. Test — Restore power and run a full heat cycle to confirm the igniter glows and the burners light.

Signs You Need a Replacement

• Furnace runs the inducer and clicks but the burners never ignite
• Visible crack, blister, or break in the igniter element
• No glow visible through the sight port on a call for heat
• Intermittent no-heat that worsens in cold weather

Shipping & Returns

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