What MFD capacitor do I need for my ICP AC?

The correct replacement for ICP model WAMA18004A1 — Includes Mounting Strap | 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 WAMA18004A1 — Includes Mounting Strap | Ships Today.

My AC hums but will not start. What part do I need?

An AC that hums but will not start is the classic symptom of a failed capacitor. The capacitor provides the electrical boost needed to start the compressor and fan motors. When it fails, you hear the hum of the motor trying to start but it cannot overcome inertia. Other symptoms include the fan spinning slowly, the AC cycling on and off rapidly, or a visibly swollen or leaking capacitor. Replacement cost: $15 to $80 for the part, DIY in 30 minutes.

ICP

ICP Dual Run Capacitor 35+5 MFD 440V for WAMA18004A1 — Includes Mounting Strap | Ships Today

Name: ICP Dual Run Capacitor 35+5 MFD 440V for WAMA18004A1 — Includes Mounting Strap | Ships Today
Brand: ICP
SKU: 202401100409
Price: 32.44 USD
Availability: InStock

SKU: 202401100409 Brand: ICP

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Overview

This is a genuine OEM dual run capacitor for the ICP/Tempstar/Heil WAMA18004A1 condensing unit. A dual run capacitor stores and delivers the electrical charge that keeps both the compressor and the condenser fan motor running smoothly under load. This 35+5 MFD, 440V unit provides separate HERM and FAN terminals so a single component serves both motors. When a run capacitor weakens or fails, the system may hum but fail to start, the outdoor fan may stall, or the compressor may overheat and trip on thermal overload. Replacing a degraded capacitor is one of the most common and lowest-cost AC repairs. This listing includes the OEM capacitor (part 202401100409) and the matching mounting strap (part 201270390202) to secure it safely inside the control box.

Specifications

Spec	Value
Part Number	202401100409 (capacitor), 201270390202 (strap)
Type	Dual Run Capacitor
Brand	ICP / Tempstar / Heil
Capacitance	35 + 5 MFD
Voltage	440V (compatible with 370V applications)
Terminals	HERM / FAN / COMMON
Shape	Round

Compatibility

Engineered as the factory replacement for the ICP/Tempstar/Heil WAMA18004A1 air conditioning condensing unit. As a 35+5 MFD 440V dual run capacitor, it is also a common service replacement across many comparable ICP-family 1.5-ton condensers. Always confirm the MFD and voltage rating printed on your existing capacitor before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and verify zero voltage with a multimeter. Discharge the old capacitor across its terminals with an insulated resistor before touching.
Access — Remove the condenser service panel to expose the control box.
Document — Photograph all wire connections (HERM, FAN, COMMON) before disconnecting anything.
Remove — Loosen the mounting strap, slide out the old capacitor, and transfer wires one terminal at a time.
Install — Mount the new capacitor with the included strap and reconnect each wire to its matching terminal per your photo.
Test — Restore power and confirm the compressor and condenser fan start and run normally.

Signs You Need a Replacement

Outdoor unit hums but the fan or compressor will not start.
Condenser fan spins slowly or only starts when pushed by hand.
Compressor short-cycles or trips the breaker on startup.
Visible bulging, leaking, or a domed top on the old capacitor.

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 Dual Run Capacitor 35+5 MFD ...

$32.44

Frequently Asked Questions

Does this Capacitor fit my ICP WAMA18004A1 — Includes Mounting Strap | Ships Today?

Yes. This is the factory-specified OEM capacitor for the ICP WAMA18004A1 — Includes Mounting Strap | 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 capacitor on my ICP WAMA18004A1 — Includes Mounting Strap | Ships Today?

Difficulty: Easy (20–30 min)
Step 1: Turn off power at breaker. Step 2: Open condensing unit panel. Step 3: Photograph the old capacitor wiring (Common/Herm/Fan). Step 4: Discharge old capacitor with insulated screwdriver. Step 5: Disconnect and remove old capacitor. Step 6: Mount new capacitor, reconnect wires to matching terminals. Step 7: Close panel, restore power, test. Tools: screwdriver, needle-nose pliers.

My AC hums but won’t start. What part do I need?

An AC that hums but won’t start is the classic symptom of a failed capacitor. The capacitor provides the electrical boost to start the compressor. When it fails, you hear humming but the motor can’t overcome inertia. Other symptoms: fan spinning slowly, AC cycling on/off rapidly, or a visibly swollen capacitor. Fix: replace capacitor ($15–$80 DIY, 30 min).

Is this capacitor 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 capacitor?

OEM strongly recommended. OEM capacitors have ±6% MFD tolerance vs aftermarket ±10%. The looser tolerance causes motor winding stress, higher temps, and shorter compressor life. Price difference is only $10–$20 — OEM is the clear value choice.

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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