What igniter fits my ICP furnace?

The correct replacement for ICP model RGS121STAA0AAAA — 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 RGS121STAA0AAAA — 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 RGS121STAA0AAAA — With Wiring Harness | Ships Today

Name: ICP Hot Surface Igniter Kit for RGS121STAA0AAAA — With Wiring Harness | Ships Today
Brand: ICP
SKU: 1171306
Price: 46.80 USD
Availability: InStock

SKU: 1171306 Brand: ICP

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Overview

This OEM igniter service kit includes the ICP hot surface igniter, part number 1171306, and the matching igniter wiring kit, part number 1188370, for the RGS121STAA0AAAA gas furnace. The hot surface igniter (HSI) glows red-hot when energized to ignite the gas at the burners on each heat call, and the included wiring harness ensures a clean, correct electrical connection back to the control board. HSIs are fragile and degrade with every heating cycle — they crack from thermal stress, vibration, or even an oily fingerprint. When the igniter fails, the furnace will go through its inducer and prepurge sequence but never light, often locking out after several failed attempts and leaving the home without heat.

Specifications

Spec	Value
Igniter Part Number	1171306
Wiring Kit Part Number	1188370
Type	Hot Surface Igniter (HSI)
Brand	ICP / Tempstar / Heil
Fit	OEM Replacement
Compatible Model	RGS121STAA0AAAA

Compatibility

Designed for the ICP/Tempstar/Heil RGS121STAA0AAAA furnace and other ICP-family furnaces using this hot surface igniter and harness. Confirm the igniter element shape and connector against your original before ordering.

Installation Guide

Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage.
Access — Remove the burner compartment service panel.
Document — Photograph the igniter mounting and harness routing before disconnecting.
Remove — Unplug the old igniter at the connector and remove its mounting screw(s). Handle the new igniter by the ceramic base only — never touch the element.
Install — Mount the new 1171306 igniter, connect the 1188370 wiring kit, and route the harness clear of hot or moving parts.
Test — Restore power and run a heat cycle to confirm the igniter glows and the burners light promptly.

Signs You Need a Replacement

Furnace runs the inducer but burners never ignite.
Igniter does not glow, or glows weakly.
Visible crack or break in the igniter 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.

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 ...

$46.80

Frequently Asked Questions

Does this Igniter fit my ICP RGS121STAA0AAAA — With Wiring Harness | Ships Today?

Yes. This is the factory-specified OEM igniter for the ICP RGS121STAA0AAAA — 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 RGS121STAA0AAAA — 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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