What igniter fits my ICP furnace?

The correct replacement for ICP model RGS121LSBB0AAAA — With Wiring Harness | Ships Today is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your ICP equipment which lists the model number RGS121LSBB0AAAA — With Wiring Harness | Ships Today.

My furnace will not ignite. What part is bad?

A furnace that will not ignite after the draft inducer runs typically has a failed igniter. The hot surface igniter should glow bright orange within 60 seconds. If it does not glow at all, it is cracked or burned out. If it glows weakly, it is degrading and should be replaced preventively. Average lifespan: 3 to 7 years.

ICP

ICP Hot Surface Igniter Kit for RGS121LSBB0AAAA — With Wiring Harness | Ships Today

Name: ICP Hot Surface Igniter Kit for RGS121LSBB0AAAA — With Wiring Harness | Ships Today
Brand: ICP
SKU: 1171306
Price: 48.04 USD
Availability: InStock

SKU: 1171306 Brand: ICP

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Overview

This genuine OEM hot surface igniter (part number 1171306) with its matching wiring kit (part number 1188370) is the ignition component for the ICP RGS121LSBB0AAAA gas furnace. When the furnace calls for heat, the control board sends voltage to the igniter, which glows white-hot to light the burners. Hot surface igniters are brittle and degrade over time — thermal cycling eventually cracks the silicon carbide or nitride element, leaving a furnace that clicks, draws, but never lights. Because the igniter is the single most common no-heat failure point, replacing it with the correct OEM element and harness is the fastest way to restore reliable ignition. The included wiring kit ensures a clean, factory-correct connection and eliminates brittle, heat-damaged leads.

Specifications

Spec	Value
Part Number (Igniter)	1171306
Part Number (Wiring Kit)	1188370
Type	Hot Surface Igniter
Brand	ICP (Tempstar / Heil / Comfortmaker)
Function	Burner Ignition
Fits Model	RGS121LSBB0AAAA

Compatibility

Designed as the factory replacement for the ICP RGS121LSBB0AAAA and the Tempstar, Heil, and Comfortmaker furnaces that share this igniter and harness assembly. Handle the element only by its ceramic base — skin oils and rough handling shorten igniter life.

Installation Guide

Safety First — Shut off gas and disconnect power, then verify zero voltage with a multimeter.
Access — Remove the burner compartment service panel.
Document — Photograph the igniter position and wiring before disconnecting.
Remove — Unplug the igniter harness and remove the mounting screw; lift out the cracked igniter without touching the element.
Install — Mount the new igniter, route and connect the new wiring kit per your photo.
Test — Restore gas and power, then watch a full ignition cycle to confirm the igniter glows and the burners light.

Signs You Need a Replacement

Furnace clicks and the inducer runs but burners never light
Igniter shows visible cracks or no longer glows
Intermittent no-heat, especially on cold mornings
Control board locks out after repeated failed ignition attempts

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

ICP Hot Surface Igniter Kit for ...

$48.04

Frequently Asked Questions

Does this Igniter fit my ICP RGS121LSBB0AAAA — With Wiring Harness | Ships Today?

Yes. This is the factory-specified OEM igniter for the ICP RGS121LSBB0AAAA — With Wiring Harness | Ships Today. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the igniter on my ICP RGS121LSBB0AAAA — With Wiring Harness | Ships Today?

Difficulty: Medium (20–30 min)
Step 1: Turn off power and gas. Step 2: Open furnace panel. Step 3: Locate igniter near burners. Step 4: Disconnect two-wire plug. Step 5: Remove mounting screw. Step 6: Install new igniter — do NOT touch element with fingers. Step 7: Reconnect, close panel, restore power/gas.

My furnace won’t ignite. What part is bad?

Furnace won’t ignite after the draft inducer runs = failed igniter. The hot surface igniter should glow bright orange within 60 seconds. No glow = cracked/burned out. Weak glow = degrading. Average lifespan: 3–7 years. Replacement: $15–$40 DIY.

Is this igniter compatible with Bryant or Payne too?

Many ICP parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my ICP igniter?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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