What MFD capacitor do I need for my ICP AC?

The correct replacement for ICP model RGS150LFCB0AAAA — 45+5 MFD 440V | 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 RGS150LFCB0AAAA — 45+5 MFD 440V | 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 for RGS150LFCB0AAAA — 45+5 MFD 440V | Ships Today

Name: ICP Dual Run Capacitor for RGS150LFCB0AAAA — 45+5 MFD 440V | Ships Today
Brand: ICP
SKU: 1171842
Price: 31.20 USD
Availability: InStock

SKU: 1171842 Brand: ICP

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Overview

This OEM dual run capacitor provides the starting and running torque for both the compressor and condenser fan motor in your ICP RGS150LFCB0AAAA package unit. Rated at 45+5 MFD and 440V, the dual-rated design serves two motors from one component. This kit includes the capacitor boot (OEM 1171842) and the oval mounting clamp (OEM 1171552) for a secure, code-correct installation. A weak or failed capacitor is the single most common cause of a unit that hums but won't start, or one that trips on overload.

Specifications

Spec	Value
Part Number(s)	1171842 (Capacitor Boot), 1171552 (Oval Capacitor Clamp)
Type	Dual Run Capacitor
Brand	ICP (Tempstar / Heil / Comfortmaker)
Rating	45+5 MFD
Voltage	440V (compatible with 370V applications)
Shape	Oval

Compatibility

Direct fit for the ICP RGS150LFCB0AAAA package gas/electric unit and ICP-family condensing equipment sold under Tempstar, Heil, and Comfortmaker that use a 45+5 MFD oval dual run capacitor. Always match microfarad (MFD) values and voltage rating to your existing capacitor before installing.

Installation Guide

Safety First — Disconnect power and verify zero voltage. Safely discharge the old capacitor across the terminals with an insulated resistor before touching it.
Access — Remove the electrical access panel to reach the capacitor.
Document — Photograph the HERM, FAN, and C (common) terminal wiring before removing any leads.
Remove — Pull the leads, release the oval clamp, and take out the old capacitor.
Install — Seat the new capacitor in the clamp with the boot fitted, then land the wires on HERM, FAN, and C per your photo.
Test — Restore power, call for cooling, and confirm both the compressor and fan start instantly and run smoothly.

Signs You Need a Replacement

Compressor or fan hums but won't start
Bulged, leaking, or swollen capacitor top
System short-cycles or trips the breaker
Measured MFD reads outside the rated tolerance

Shipping & Returns

Ships same day on orders placed before 3 PM CST. 30-day hassle-free 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 for RGS15...

$31.20

Frequently Asked Questions

Does this Capacitor fit my ICP RGS150LFCB0AAAA — 45+5 MFD 440V | Ships Today?

Yes. This is the factory-specified OEM capacitor for the ICP RGS150LFCB0AAAA — 45+5 MFD 440V | 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 RGS150LFCB0AAAA — 45+5 MFD 440V | 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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