What igniter fits my ICP furnace?

The correct replacement for ICP model X9MPT125L20B1 — HSI Ignition | 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 X9MPT125L20B1 — HSI Ignition | 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 X9MPT125L20B1 — HSI Ignition | Ships Today

Name: ICP Hot Surface Igniter for X9MPT125L20B1 — HSI Ignition | Ships Today
Brand: ICP
SKU: X9MPT125L20B1
Price: 44.20 USD
Availability: InStock

SKU: X9MPT125L20B1 Brand: ICP

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Overview

This is a genuine OEM hot surface igniter (HSI), part number 1172533, for the ICP Tempstar Heil X9MPT125L20B1 gas furnace. On a call for heat, the control board energizes the igniter, which glows red-hot to ignite the gas at the burners. The igniter element is a brittle silicon-carbide or silicon-nitride component that degrades with every heating cycle and is one of the most common furnace failure points. A cracked or worn igniter produces no-heat calls, repeated ignition lockouts, or a furnace that cycles the inducer and gas valve but never lights. This part pairs with the matching flame sensor (1172543) and two-stage gas valve (1172542, VR8205Q) used in this model's ignition system.

Specifications

Spec	Value
Part Number	1172533
Type	Hot Surface Igniter (HSI)
Brand	ICP (Tempstar / Heil)
Related Parts	1172543 Flame Sensor, 1172542 Gas Valve (VR8205Q)
System	2-Stage HSI Ignition
Fit	OEM Replacement

Compatibility

Engineered for the ICP Tempstar Heil X9MPT125L20B1 two-stage gas furnace. The 1172533 HSI is shared across many ICP-family (Tempstar, Heil, Comfortmaker, Arcoaire) furnace platforms using the same ignition module. Verify the igniter plug and mounting bracket match your existing part before ordering.

Installation Guide

Safety First — Shut off gas and disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter.
Access — Remove the burner-compartment service panel.
Document — Photograph the igniter bracket position and wiring harness routing.
Remove — Unplug the igniter connector and remove the mounting screw. Handle the element only by its ceramic base — never touch the silicon element.
Install — Mount the new igniter in the same position, reconnect the harness, and confirm proper clearance to the burner.
Test — Restore gas and power, then watch a full ignition cycle to confirm the igniter glows and lights the burners.

Signs You Need a Replacement

Furnace will not light — no glow at the igniter on a heat call
Visible cracks, chips, or fractures in the igniter element
Repeated ignition lockouts after several failed trials
Inducer and gas valve cycle but burners never ignite

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 X9MP...

$44.20

Frequently Asked Questions

Does this Igniter fit my ICP X9MPT125L20B1 — HSI Ignition | Ships Today?

Yes. This is the factory-specified OEM igniter for the ICP X9MPT125L20B1 — HSI Ignition | 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 X9MPT125L20B1 — HSI Ignition | 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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