What MFD capacitor do I need for my ICP AC?

The correct replacement for ICP model WFAR120D066B1 — OEM with 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 WFAR120D066B1 — OEM with 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 Run Capacitor 35 MFD 370V for WFAR120D066B1 — OEM with Mounting Strap | Ships Today

Name: ICP Run Capacitor 35 MFD 370V for WFAR120D066B1 — OEM with Mounting Strap | Ships Today
Brand: ICP
SKU: 1184895
Price: 24.64 USD
Availability: InStock

SKU: 1184895 Brand: ICP

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Overview

This OEM 35 MFD, 370-volt run capacitor is the factory replacement for the ICP Tempstar Heil WFAR120D066B1 furnace blower motor circuit. The kit includes capacitor part number 1184895 and the oval mounting strap 1014315. A run capacitor stores and releases electrical energy to give the blower motor the steady torque it needs to run efficiently. As capacitors age they lose capacitance, causing the motor to run hot, hum, struggle to start, or shut down on thermal overload. A weak or bulging capacitor is one of the least expensive yet most common causes of blower problems. Replacing it restores full motor performance and protects the motor windings from premature failure.

Specifications

Spec	Value
Part Number (Capacitor)	1184895
Part Number (Strap)	1014315
Type	Single Run Capacitor, Oval
Capacitance (MFD)	35
Voltage	370V
Brand	ICP / Tempstar / Heil
Fits Model	WFAR120D066B1
Fit	OEM Direct Replacement

Compatibility

Designed for the ICP Tempstar Heil WFAR120D066B1 furnace and compatible across ICP-family brands (Comfortmaker, Heil, Tempstar, Arcoaire) using a 35 MFD 370V oval run capacitor. Verify the MFD and voltage rating printed on your old capacitor before ordering — they must match exactly.

Installation Guide

Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter. Discharge the capacitor across its terminals with an insulated resistor before touching it.
Access — Remove the furnace blower compartment service panel.
Document — Photograph every wire and terminal connection before disconnecting.
Remove — Note terminal markings, pull the wires, loosen the mounting strap, and remove the old capacitor.
Install — Secure the new capacitor with the oval strap and reconnect each wire to the matching terminal per your photo.
Test — Restore power and confirm the blower starts smoothly and runs without humming or overheating.

Signs You Need a Replacement

Blower motor hums but will not start
Motor runs hot or trips on thermal overload
Visibly swollen, bulging, or leaking capacitor top
Intermittent blower operation or reduced airflow

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 Run Capacitor 35 MFD 370V fo...

$24.64

Frequently Asked Questions

Does this Capacitor fit my ICP WFAR120D066B1 — OEM with Mounting Strap | Ships Today?

Yes. This is the factory-specified OEM capacitor for the ICP WFAR120D066B1 — OEM with 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 WFAR120D066B1 — OEM with 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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