What MFD capacitor do I need for my ICP AC?

The correct replacement for ICP model RGS243LSAA0AAAA — OEM 1183001 | 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 RGS243LSAA0AAAA — OEM 1183001 | 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 Plate 10 MFD 370/440V for RGS243LSAA0AAAA — OEM 1183001 | Ships Today

Name: ICP Run Capacitor Plate 10 MFD 370/440V for RGS243LSAA0AAAA — OEM 1183001 | Ships Today
Brand: ICP
SKU: 1183001
Price: 32.44 USD
Availability: InStock

SKU: 1183001 Brand: ICP

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Overview

This is the genuine OEM run capacitor plate (part number 1183001) for the ICP / Tempstar / Heil RGS243LSAA0AAAA gas furnace. The run capacitor delivers a steady charge to the blower motor windings, keeping the motor running efficiently after start-up. Rated at 10 MFD, 370/440V, it supplies the phase shift the motor needs to maintain torque and avoid overheating. A weak or failed capacitor is a leading cause of a blower that hums but won't spin, starts slowly, or trips the motor's overload. Replacing this inexpensive part often brings a stalled blower back to life.

Specifications

Spec	Value
Part Number	1183001 (Capacitor Plate)
Type	Single Run Capacitor
Brand	ICP / Tempstar / Heil
Capacitance	10 MFD
Voltage	370/440V
Application	Furnace blower motor
Fit	Genuine OEM

Compatibility

Factory replacement for the ICP/Tempstar/Heil RGS243LSAA0AAAA furnace and many ICP-family models built under the Tempstar, Heil, and Comfortmaker brands that use this capacitor plate. Confirm the MFD and voltage on your original capacitor before installing.

Installation Guide

Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter. Discharge the old capacitor across its terminals with an insulated screwdriver.
Access — Remove the furnace blower compartment service panel.
Document — Photograph all wire connections before disconnecting anything.
Remove — Note the lead positions, pull the spade connectors, and unfasten the mounting strap.
Install — Mount the new capacitor and reconnect the leads exactly per your photo.
Test — Restore power and confirm the blower starts and runs smoothly.

Signs You Need a Replacement

Blower motor hums but will not start
Bulging, leaking, or burnt capacitor housing
Blower starts slowly or cuts out under load
Motor overheats or trips its internal overload

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 Plate 10 MFD 3...

$32.44

Frequently Asked Questions

Does this Capacitor fit my ICP RGS243LSAA0AAAA — OEM 1183001 | Ships Today?

Yes. This is the factory-specified OEM capacitor for the ICP RGS243LSAA0AAAA — OEM 1183001 | 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 RGS243LSAA0AAAA — OEM 1183001 | 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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