What amp contactor do I need for my ICP system?

The correct replacement for ICP model RGS120HEAA0AKAA — 24V Coil | 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 RGS120HEAA0AKAA — 24V Coil | 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 Contactor for RGS120HEAA0AKAA — 24V Coil | Ships Today

Name: ICP 2-Pole 30A Contactor for RGS120HEAA0AKAA — 24V Coil | Ships Today
Brand: ICP
SKU: 1178074-GEN
Price: 34.00 USD
Availability: InStock

SKU: 1178074-GEN Brand: ICP

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Overview

This is a genuine OEM 2-pole definite purpose contactor (part number 1178074) for the ICP / Tempstar / Heil RGS120HEAA0AKAA furnace and matched cooling system. The contactor is the electromechanical switch that energizes the compressor and condenser fan motor whenever the thermostat calls for cooling. A low-voltage 24V signal pulls the coil in, closing two sets of 30A line-voltage contacts. Over thousands of cycles these contacts pit, arc, and burn — leading to chattering, welded contacts that keep the unit running, or a system that will not start at all. Replacing a worn contactor restores clean, reliable switching and protects the more expensive components downstream.

Specifications

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

Compatibility

Designed as a direct-fit replacement for the ICP RGS120HEAA0AKAA and the wider family of ICP, Tempstar, Heil, and Comfortmaker equipment that uses the 1178074 contactor. Always confirm coil voltage (24V) and amp rating (30A) against the part you are removing before installing.

Installation Guide

Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
Access — Remove the unit service panel to expose the control box.
Document — Photograph all line and coil wiring before disconnecting anything.
Remove — Note each wire location, disconnect the line and 24V coil leads, and unscrew the old contactor from the bracket.
Install — Mount the new contactor and reconnect each wire exactly per your photo.
Test — Restore power and confirm the contactor pulls in on a cooling call and drops out cleanly.

Signs You Need a Replacement

Loud buzzing or chattering from the contactor on a cooling call
Pitted, burned, or welded contacts visible on inspection
Compressor or condenser fan that will not start, or will not shut off
Visible arcing or a burnt-electrical smell at the control box

Shipping & Returns

Ships same day on orders placed 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 2-Pole 30A Contactor for RGS...

$34.00

Frequently Asked Questions

Does this Contactor fit my ICP RGS120HEAA0AKAA — 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP RGS120HEAA0AKAA — 24V Coil | 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 RGS120HEAA0AKAA — 24V Coil | 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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