What MFD capacitor do I need for my ICP AC?

The correct replacement for ICP model RGS303LTAA0AAAA — Round Capacitor Plate | 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 RGS303LTAA0AAAA — Round Capacitor Plate | 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 5 MFD 440V for RGS303LTAA0AAAA — Round Capacitor Plate | Ships Today

Name: ICP Run Capacitor 5 MFD 440V for RGS303LTAA0AAAA — Round Capacitor Plate | Ships Today
Brand: ICP
SKU: 1183001
Price: 24.64 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 run capacitor (part #1183001, "Capacitor Plate") is the factory-specified motor-run capacitor for the ICP/Tempstar/Heil RGS303LTAA0AAAA packaged gas/electric unit. Rated at 5 MFD and 440 volts, it supplies the steady phase shift that keeps the condenser fan motor turning at full torque and efficiency. Run capacitors are among the most common HVAC failures — as they weaken, the motor draws excess current, overheats, hums without spinning, or quits, which can quickly lead to a costly motor failure if left unaddressed. A fresh capacitor restores reliable motor performance.

Specifications

Spec	Value
OEM Part Number	1183001
Description	Capacitor Plate
Type	Single Run Capacitor
Brand	ICP / Tempstar / Heil
Capacitance	5 MFD
Voltage Rating	440V (440/370V compatible)
Tolerance	±6%

Compatibility

Engineered as a direct OEM fit for the ICP RGS303LTAA0AAAA model. Also widely used across the ICP family of brands — Tempstar, Heil, and Comfortmaker — on units calling for a 5 MFD / 440V run capacitor. Confirm your existing capacitor's microfarad and voltage rating against the unit data plate before ordering.

Installation Guide

Safety First — Disconnect power at the unit disconnect and verify zero voltage with a multimeter. Discharge the old capacitor across its terminals with an insulated screwdriver before handling.
Access — Remove the service panel to expose the capacitor mounting bracket.
Document — Photograph all wire connections before disconnecting anything.
Remove — Pull the spade connectors off the old capacitor terminals and loosen the mounting strap.
Install — Mount the new capacitor in the bracket and reconnect the leads exactly per your photo.
Test — Restore power and confirm the condenser fan spins up promptly and runs steadily.

Signs You Need a Replacement

Fan motor hums but won't start, or needs a push to spin
Visibly bulged, leaking, or swollen capacitor top
Unit trips the breaker or motor overheats during operation
Measured capacitance reads outside the ±6% tolerance

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 5 MFD 440V for...

$24.64

Frequently Asked Questions

Does this Capacitor fit my ICP RGS303LTAA0AAAA — Round Capacitor Plate | Ships Today?

Yes. This is the factory-specified OEM capacitor for the ICP RGS303LTAA0AAAA — Round Capacitor Plate | 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 RGS303LTAA0AAAA — Round Capacitor Plate | 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