What igniter fits my ICP furnace?

The correct replacement for ICP model RGS121LTCA0AAA — Furnace Ignitor with Wiring Kit | 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 RGS121LTCA0AAA — Furnace Ignitor with Wiring Kit | 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 for RGS121LTCA0AAA — Furnace Ignitor with Wiring Kit | Ships Today

Name: ICP Hot Surface Igniter for RGS121LTCA0AAA — Furnace Ignitor with Wiring Kit | Ships Today
Brand: ICP
SKU: 1171306
Price: 44.20 USD
Availability: InStock

SKU: 1171306 Brand: ICP

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Overview

This is a genuine OEM hot surface igniter assembly for the ICP / Tempstar / Heil RGS121LTCA0AAA gas furnace, supplied with ignitor part number 1171306 and igniter wiring kit 1188370. The hot surface igniter is the component that glows red-hot to light the burner gas on each heat call. It is a silicon nitride / carbide element energized by the 120V control board, and it is one of the most common furnace failure points because the element becomes brittle with thousands of heating cycles. When the igniter cracks or weakens, the furnace will not light, leaving you with cold air or a no-heat lockout.

Specifications

Spec	Value
Part Number	1171306 (ignitor), 1188370 (wiring kit)
Type	Hot Surface Igniter
Brand	ICP / Tempstar / Heil
Voltage	120V
Application	Gas Furnace Ignition
Fitment	OEM Direct Replacement

Compatibility

Engineered as a direct-fit replacement for the ICP family RGS121LTCA0AAA furnace and shared-platform Tempstar, Heil, and Comfortmaker models built on the same burner assembly. Always verify your existing igniter part number before ordering.

Installation Guide

Safety First — Disconnect power at the furnace switch and verify zero voltage with a multimeter.
Access — Remove the furnace burner/control service panel.
Document — Photograph the igniter mounting and wiring routing before disconnecting.
Remove — Unplug the igniter connector, remove the mounting screw, and carefully withdraw the old element without touching the new ceramic with bare fingers.
Install — Mount the new igniter in the same orientation, install the wiring kit, and reconnect per your photo.
Test — Restore power and run a heat cycle; confirm the igniter glows and the burners light within a few seconds.

Signs You Need a Replacement

Furnace blower runs but burners never ignite
Igniter does not glow or glows dimly
Visible cracks or hot spots on the ceramic element
Furnace locks out after three failed ignition attempts

Shipping & Returns

Ships same day on orders placed 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 for RGS1...

$44.20

Frequently Asked Questions

Does this Igniter fit my ICP RGS121LTCA0AAA — Furnace Ignitor with Wiring Kit | Ships Today?

Yes. This is the factory-specified OEM igniter for the ICP RGS121LTCA0AAA — Furnace Ignitor with Wiring Kit | 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 RGS121LTCA0AAA — Furnace Ignitor with Wiring Kit | 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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