ICP Hot Surface Igniter for RGS121HECA0AAA — Silicon Nitride OEM Kit | Ships Today
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Overview
This is a genuine OEM hot surface igniter assembly for the ICP / Tempstar / Heil RGS121HECA0AAA gas furnace, supplied as part number 1171306 (IGNITOR) with matching wiring harness kit 1188370 (WIRING KIT IGNITER). The hot surface igniter is the component that glows red-hot at the start of each heating cycle to ignite the gas at the burners. When you fail to get heat — the inducer runs, the gas valve clicks, but the burners never light — a cracked or open igniter is the most common cause. The included wiring kit ensures the correct plug, leads, and ceramic block mate cleanly to your furnace's integrated control without splicing.
Specifications
| Spec | Value |
|---|---|
| OEM Part Number | 1171306 (Igniter), 1188370 (Wiring Kit) |
| Type | Hot Surface Igniter |
| Brand | ICP / Tempstar / Heil / Comfortmaker |
| Fits Model | RGS121HECA0AAA |
| Application | Gas furnace ignition |
| Fitment | Direct OEM replacement |
Compatibility
Designed as a direct-fit replacement for the ICP family RGS121HECA0AAA gas furnace and related Tempstar, Heil, and Comfortmaker models that share this ignition assembly. Always confirm your existing igniter and wiring plug against the OEM numbers above before ordering.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker, and close the gas shutoff. Verify zero voltage with a multimeter.
- Access — Remove the burner-compartment service panel.
- Document — Photograph the igniter mounting and wiring plug before disconnecting.
- Remove — Unplug the igniter harness, remove the mounting screw, and lift out the old igniter. Handle the new ceramic element only by its bracket — finger oils shorten its life.
- Install — Mount the new igniter so the element sits in the burner flame path, then connect the included wiring kit per your photo.
- Test — Restore gas and power and watch a full cycle: the igniter should glow bright orange, the burners should light, and flame should carry across all burners.
Signs You Need a Replacement
- Furnace tries to start but burners never ignite (no glow visible).
- Visible crack, blister, or break in the igniter element.
- Furnace short-cycles or locks out after several failed ignition attempts.
- Igniter glows weakly or unevenly compared to new.
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