What HP motor do I need for my ICP unit?

The correct replacement for ICP model WPG4304040RKB1 — OEM 1188128 | 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 WPG4304040RKB1 — OEM 1188128 | Ships Today.

My AC fan is not spinning. What part do I need?

A fan that does not spin, spins slowly, or makes grinding or squealing noises needs a new motor. Grinding means the bearings have failed. Squealing means the bearings are dry. No spin with a humming sound means the capacitor may be the issue. Check the motor capacitor before replacing the entire motor.

ICP

ICP Blower Fan Motor 1/2 HP for WPG4304040RKB1 — OEM 1188128 | Ships Today

Name: ICP Blower Fan Motor 1/2 HP for WPG4304040RKB1 — OEM 1188128 | Ships Today
Brand: ICP
SKU: 1188128
Price: 218.40 USD
Availability: InStock

SKU: 1188128 Brand: ICP

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Overview

This OEM 1/2 HP blower motor drives the indoor air circulation for the ICP / Tempstar / Heil WPG4304040RKB1 packaged gas unit. The blower motor turns the squirrel-cage wheel that pushes conditioned air through the ductwork on both heating and cooling cycles. A failing motor shows up as weak airflow, overheating and thermal-cutout shutdowns, loud bearing noise, or a blower that will not start at all. Replacing a worn-out motor restores proper CFM, protects the heat exchanger from overheating, and keeps the system running quietly and efficiently. This listing covers OEM part number 1188128, the factory-correct 1/2 HP blower motor for this model.

Specifications

Spec	Value
Part Number	1188128
Type	Blower / Furnace Fan Motor
Horsepower	1/2 HP
Brand	ICP / Tempstar / Heil
Fits Model	WPG4304040RKB1
Application	Furnace / Air Handler Blower
Fit	OEM Direct Replacement

Compatibility

Direct-fit replacement for the ICP / Tempstar / Heil WPG4304040RKB1 packaged gas furnace. Confirm horsepower, voltage, rotation, and shaft size against your existing motor and OEM part number before ordering.

Installation Guide

Safety First — Disconnect power at the unit disconnect and verify zero voltage with a multimeter.
Access — Remove the blower compartment service panel and slide out the blower assembly.
Document — Photograph all motor wiring, capacitor leads, and wheel position before disconnecting.
Remove — Loosen the blower-wheel set screw, pull the wheel, then unbolt the old motor from the mounting band.
Install — Mount the new motor, reinstall the wheel at the correct depth, tighten the set screw on the shaft flat, and reconnect wiring per your photo.
Test — Restore power and verify the blower spins up smoothly, quietly, and in the correct rotation.

Signs You Need a Replacement

Weak or no airflow from the registers
Loud humming, grinding, or squealing bearing noise
Motor overheats and trips on thermal overload
Blower fails to start or starts intermittently

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 Blower Fan Motor 1/2 HP for ...

$218.40

Frequently Asked Questions

Does this Fan Motor fit my ICP WPG4304040RKB1 — OEM 1188128 | Ships Today?

Yes. This is the factory-specified OEM fan motor for the ICP WPG4304040RKB1 — OEM 1188128 | 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 fan motor on my ICP WPG4304040RKB1 — OEM 1188128 | Ships Today?

Difficulty: Medium-Hard (1–2 hrs)
Step 1: Turn off breaker. Step 2: Note motor specs: HP, RPM, voltage, rotation direction. Step 3: Remove old motor from mounting. Step 4: Transfer fan blade to new motor. Step 5: Mount new motor, reconnect wiring. Step 6: Restore power, verify rotation direction.

My AC fan isn’t spinning. What part do I need?

Fan not spinning, spinning slowly, or making grinding/squealing noises = motor failure. Grinding = bearings failed. Squealing = bearings dry. No spin + hum = check the motor capacitor first before replacing the entire motor.

Is this fan motor 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 fan motor?

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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