ICP Hot Surface Igniter Kit for RGS121SFAB0AAAA — with Wiring Harness | Ships Today
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Overview
This is the genuine OEM hot surface igniter kit for the ICP / Tempstar / Heil RGS121SFAB0AAAA gas furnace, including the igniter (part 1171306) and its matched wiring kit (part 1188370). On a call for heat, the control board sends line voltage to the igniter, which glows white-hot and lights the burners as gas is introduced. Hot surface igniters are a high-wear consumable: the element is brittle and slowly erodes with every heating cycle until it cracks and can no longer reach ignition temperature. The included wiring kit ensures a clean, correctly terminated connection — important because a corroded or loose igniter plug is a common cause of intermittent no-heat calls. Replacing both together restores reliable first-try ignition.
Specifications
| Spec | Value |
|---|---|
| Part Numbers | 1171306 (Igniter), 1188370 (Wiring Kit) |
| Type | Hot Surface Igniter |
| Brand | ICP / Tempstar / Heil |
| Element | Silicon carbide / silicon nitride style |
| Includes | Igniter + matched wiring harness |
| Application | Gas furnace burner ignition |
Compatibility
Designed for the ICP-family RGS121SFAB0AAAA and related Tempstar, Heil, and Comfortmaker gas furnaces using this hot surface ignition system. Confirm the mounting tab and connector match your existing igniter before installing — and never touch the element with bare fingers, as skin oils shorten its life.
Installation Guide
- Safety First — Shut off gas and disconnect electrical power; verify zero voltage with a multimeter.
- Access — Remove the burner-compartment service panel.
- Document — Photo the igniter's position, bracket, and harness routing before disconnecting.
- Remove — Unplug the igniter harness, remove the mounting screw, and carefully withdraw the brittle igniter without bumping it.
- Install — Seat the new igniter in the same position (handling only the ceramic base), secure the screw, and connect the new wiring kit.
- Test — Restore gas and power, call for heat, and confirm the igniter glows and burners light cleanly within the normal ignition sequence.
Signs You Need a Replacement
- Furnace clicks and calls for heat but burners never light
- Igniter no longer glows or glows weakly/unevenly
- Visible cracks, blistering, or hot spots on the element
- Intermittent no-heat lockouts that clear on reset
Shipping & Returns
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days