What MFD capacitor do I need for my ICP AC?

The correct replacement for ICP model RHS181H0CA0AAAA — Condenser Fan & Compressor | 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 RHS181H0CA0AAAA — Condenser Fan & Compressor | 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 370V for RHS181H0CA0AAAA — Condenser Fan & Compressor | Ships Today

Name: ICP Dual Run Capacitor 35/5 MFD 370V for RHS181H0CA0AAAA — Condenser Fan & Compressor | Ships Today
Brand: ICP
SKU: 1183001
Price: 32.44 USD
Availability: InStock

SKU: 1183001 Brand: ICP

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

Overview

This OEM dual run capacitor is the start/run capacitor assembly for the ICP / Tempstar / Heil RHS181H0CA0AAAA heat pump condensing unit. A dual run capacitor delivers a phase-shifted voltage boost to both the compressor and the outdoor condenser fan motor, giving each motor the torque it needs to start and run efficiently. Rated at 35/5 MFD, 370V, this part includes the OEM capacitor mounting plate (1183001) and oval retaining clamp (1171552) so it seats securely in the control box. A failed run capacitor is one of the most common causes of a condenser that hums but won't start, a fan that won't spin, or a unit that trips the breaker on startup.

Specifications

Spec	Value
OEM Part Numbers	1183001 (Capacitor Plate), 1171552 (Clamp, Oval)
Type	Dual Run Capacitor
Brand	ICP / Tempstar / Heil
Capacitance	35/5 MFD
Voltage Rating	370V
Shape	Oval
Tolerance	±6%

Compatibility

Engineered for the ICP-family RHS181H0CA0AAAA 1.5-ton heat pump and shared chassis units sold under the Tempstar, Heil, Comfortmaker, and Arcoaire brands. Always confirm the MFD and voltage stamped on your existing capacitor before ordering.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and verify zero voltage with a multimeter. A charged capacitor can hold a lethal charge — discharge it across a 20k-ohm resistor before touching the terminals.
Access — Remove the condenser service panel to expose the control box.
Document — Photograph all wires before disconnecting; note which leads land on HERM, FAN, and C.
Remove — Discharge the old capacitor, label and remove the leads, then loosen the oval clamp and lift the capacitor off the mounting plate.
Install — Seat the new capacitor on the plate, tighten the clamp, and reconnect HERM to the compressor, FAN to the condenser fan, and C to common per your photo.
Test — Restore power and confirm the compressor and fan start smoothly without hum or hesitation.

Signs You Need a Replacement

Condenser hums but the compressor or fan won't start
Bulging, leaking, or domed top on the old capacitor
Unit trips the breaker on startup or short-cycles
Measured capacitance is outside the ±6% tolerance band

Shipping & Returns

Ships same day on orders placed before 3 PM CST. 30-day returns on unused parts. 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 RHS181H0CA0AAAA — Condenser Fan & Compressor | Ships Today?

Yes. This is the factory-specified OEM capacitor for the ICP RHS181H0CA0AAAA — Condenser Fan & Compressor | 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 RHS181H0CA0AAAA — Condenser Fan & Compressor | 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.

Menu