What MFD capacitor do I need for my ICP AC?

The correct replacement for ICP model RGS243SDAA0AAAA — 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 RGS243SDAA0AAAA — 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 Blower Run Capacitor 7.5 MFD 370V for RGS243SDAA0AAAA — Ships Today

Name: ICP Blower Run Capacitor 7.5 MFD 370V for RGS243SDAA0AAAA — Ships Today
Brand: ICP
SKU: 1183001-GEN
Price: 21.95 USD
Availability: InStock

SKU: 1183001-GEN Brand: ICP

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Overview

This is a genuine OEM run capacitor (part number 1183001, "Capacitor Plate") for the ICP RGS243SDAA0AAAA gas furnace. The run capacitor provides the continuous phase shift the blower motor needs to maintain torque and run efficiently. Rated at 7.5 MFD and 370 volts, it stores and releases energy on each AC cycle to keep the indoor blower motor spinning smoothly. When a run capacitor weakens or fails, the motor draws excess current, overheats, hums, struggles to start, or stops entirely — leaving you with no airflow and a furnace that locks out on a limit fault.

Specifications

Spec	Value
Part Number	1183001
Type	Single Run Capacitor
Brand	ICP (Tempstar / Heil / Comfortmaker)
Capacitance	7.5 MFD
Voltage	370V (440V compatible)
Application	Furnace Blower Motor

Compatibility

Engineered as a direct-fit replacement for the ICP RGS243SDAA0AAAA furnace and other ICP-family (Tempstar, Heil, Comfortmaker) models using the same blower assembly. Always confirm the MFD and voltage rating stamped on your existing capacitor before installing.

Installation Guide

Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter. Capacitors hold a charge — discharge across the terminals with an insulated resistor before touching.
Access — Remove the furnace blower service panel.
Document — Photograph all wire connections before disconnecting.
Remove — Note terminal markings, pull the spade connectors, and unfasten the old capacitor from its mounting strap.
Install — Mount the new capacitor and reconnect each wire exactly as photographed.
Test — Restore power and confirm the blower starts promptly and runs without humming.

Signs You Need a Replacement

Blower motor hums but will not start spinning
Bulged, leaking, or swollen capacitor top
Weak or intermittent airflow from registers
Furnace trips on high-limit due to poor air movement

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 Blower Run Capacitor 7.5 MFD...

$21.95

Frequently Asked Questions

Does this Capacitor fit my ICP RGS243SDAA0AAAA — Ships Today?

Yes. This is the factory-specified OEM capacitor for the ICP RGS243SDAA0AAAA — 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 RGS243SDAA0AAAA — 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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