What amp contactor do I need for my ICP system?

The correct replacement for ICP model RGS120HDCA0AAA — Definite Purpose | 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 RGS120HDCA0AAA — Definite Purpose | Ships Today.

My AC clicks but the compressor does not turn on. What is wrong?

Clicking from the outdoor unit without the compressor starting usually means a worn contactor. The contactor is the relay that sends power to the compressor. When its contacts are pitted or worn, it clicks but cannot establish a solid electrical connection. Other symptoms: visible pitting or burn marks on the contactor face, AC works intermittently, or buzzing from the contactor.

ICP

ICP 2-Pole 30A 24V Contactor for RGS120HDCA0AAA — Definite Purpose | Ships Today

Name: ICP 2-Pole 30A 24V Contactor for RGS120HDCA0AAA — Definite Purpose | Ships Today
Brand: ICP
SKU: 1178074
Price: 42.84 USD
Availability: InStock

SKU: 1178074 Brand: ICP

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Overview

This OEM 2-pole, 30-amp, 24-volt definite-purpose contactor (part 1178074) for the ICP / Tempstar / Heil RGS120HDCA0AAA is the electromechanical relay that switches line-voltage power to the compressor and condenser fan motor. When the thermostat calls for cooling, the 24V control circuit energizes the contactor coil, pulling the contacts closed to deliver power to the outdoor unit. Contactors are one of the most common HVAC failure points: the contacts pit and burn from constant arcing, and the coil can fail open or stick closed. A failed contactor leaves the system unable to start — or, if welded closed, running constantly. The 30A rating and 24V coil match the original specification for this unit.

Specifications

Spec	Value
Part Number	1178074
Type	Definite Purpose Contactor
Brand	ICP / Tempstar / Heil
Poles	2-Pole
Contact Rating	30 Amps
Coil Voltage	24 VAC

Compatibility

Designed for the ICP / Tempstar / Heil / Comfortmaker RGS120HDCA0AAA and other units specifying a 2-pole 30A 24V coil contactor. Always verify pole count, amperage, and coil voltage against the part you are removing.

Installation Guide

Safety First — Disconnect power at the breaker and pull the outdoor disconnect. Verify zero voltage across all contactor terminals with a multimeter.
Access — Remove the condensing-unit electrical access panel.
Document — Photograph every wire and terminal position before disconnecting.
Remove — Label and move the line, load, and 24V coil leads one at a time, then unbolt the old contactor.
Install — Mount the new contactor, transfer each wire to the matching terminal per your photo, and confirm tight connections.
Test — Restore power, call for cooling, and verify the contactor pulls in cleanly with no chatter and the compressor and fan start.

Signs You Need a Replacement

Pitted, burned, or welded contacts
Buzzing or chattering when energized
Compressor and fan won't start on a cooling call
System runs continuously because contacts stuck closed

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. 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 2-Pole 30A 24V Contactor for...

$42.84

Frequently Asked Questions

Does this Contactor fit my ICP RGS120HDCA0AAA — Definite Purpose | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP RGS120HDCA0AAA — Definite Purpose | 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 contactor on my ICP RGS120HDCA0AAA — Definite Purpose | Ships Today?

Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Open condensing unit panel. Step 3: Photograph ALL wiring on the contactor. Step 4: Label each wire with tape. Step 5: Disconnect wires and remove old contactor. Step 6: Mount new contactor, reconnect wires matching your photo. Step 7: Restore power and test.

My AC clicks but the compressor won’t turn on. What’s wrong?

Clicking from the outdoor unit without the compressor starting = worn contactor. The contactor sends power to the compressor. When its contacts are pitted, it clicks but can’t make solid contact. Look for: visible pitting/burn marks on the contactor face, intermittent operation, or buzzing.

Is this contactor 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 contactor?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

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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