What igniter fits my ICP furnace?

The correct replacement for ICP model WPG4604090RKB1 — Silicon Nitride HSI | 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 WPG4604090RKB1 — Silicon Nitride HSI | 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 WPG4604090RKB1 — Silicon Nitride HSI | Ships Today

Name: ICP Hot Surface Igniter for WPG4604090RKB1 — Silicon Nitride HSI | Ships Today
Brand: ICP
SKU: 1186861
Price: 44.20 USD
Availability: InStock

SKU: 1186861 Brand: ICP

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Overview

This OEM hot surface igniter is the ignition source for the ICP/Tempstar/Heil WPG4604090RKB1 packaged gas unit. It replaces OEM part numbers 1186861 (control board igniter) and 1177663 (ignitor). The silicon nitride element heats to roughly 2,000°F when the control board energizes it, lighting the burner gas on each heat call. When an igniter cracks, develops hot spots, or loses resistance, the furnace will fail to light, lock out after several trial-for-ignition attempts, or short-cycle. A 120V hot surface igniter is one of the most common no-heat failure points on packaged gas equipment.

Specifications

Spec	Value
Part Numbers	1186861, 1177663
Type	Hot Surface Igniter (HSI)
Element	Silicon Nitride
Brand	ICP / Tempstar / Heil
Voltage	120V
Fits Model	WPG4604090RKB1

Compatibility

Designed for the ICP WPG4604090RKB1 packaged gas/electric unit and shared-platform Tempstar, Heil, and Comfortmaker WPG-series furnaces using the same ignition control. Always confirm your existing igniter part number before ordering.

Installation Guide

Safety First — Disconnect power at the unit disconnect and verify zero voltage with a multimeter. Shut off the gas supply.
Access — Remove the burner compartment service panel.
Document — Photo the igniter bracket and wire routing before disconnecting.
Remove — Unplug the igniter harness, remove the mounting screw, and lift the old igniter out without touching the ceramic element.
Install — Mount the new igniter (handle the element by the ceramic base only), reseat the bracket, and reconnect the harness.
Test — Restore gas and power, start a heat call, and confirm the igniter glows and the burners light.

Signs You Need a Replacement

Furnace clicks and tries to start but never lights
Visible cracks, blisters, or breaks in the ceramic element
Ignition lockout after 3 trial attempts
No glow when the igniter should be energized

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 for WPG4...

$44.20

Frequently Asked Questions

Does this Igniter fit my ICP WPG4604090RKB1 — Silicon Nitride HSI | Ships Today?

Yes. This is the factory-specified OEM igniter for the ICP WPG4604090RKB1 — Silicon Nitride HSI | 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 WPG4604090RKB1 — Silicon Nitride HSI | 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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