What amp contactor do I need for my ICP system?

The correct replacement for ICP model RGS120HFAA0AKAA — 24V Coil OEM 1178074 | 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 RGS120HFAA0AKAA — 24V Coil OEM 1178074 | 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 RGS120HFAA0AKAA — 24V Coil OEM 1178074 | Ships Today

Name: ICP 2-Pole 30A Contactor for RGS120HFAA0AKAA — 24V Coil OEM 1178074 | Ships Today
Brand: ICP
SKU: 1178074-GEN
Price: 27.00 USD
Availability: InStock

SKU: 1178074-GEN Brand: ICP

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Overview

This OEM 2-pole, 30-amp contactor (part number 1178074) with a 24V control coil switches line-voltage power to the compressor and condenser fan motor in your ICP Tempstar/Heil RGS120HFAA0AKAA system. When the thermostat calls for cooling, the 24V coil pulls the contacts closed to energize the outdoor unit. Pitted, burned, or welded contacts are one of the most common no-cool failures — they cause buzzing, chattering, a unit that won't start, or one that runs continuously. This factory-spec 30A contactor restores clean, reliable switching.

Specifications

Spec	Value
Part Number	1178074
Type	Definite Purpose Contactor
Brand	ICP (Tempstar / Heil)
Poles	2 (Double-Pole)
Contact Rating	30 Amps
Coil Voltage	24V
Application	AC Compressor / Condenser Fan
Fitment	OEM Direct Replacement

Compatibility

Fits the ICP Tempstar/Heil RGS120HFAA0AKAA and other ICP-family condensing units that specify a 2-pole 30A 24V contactor (part 1178074). Confirm pole count, amp rating, and coil voltage match your existing contactor before ordering.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter.
Access — Remove the condenser unit's electrical access panel.
Document — Photograph all line, load, and 24V coil connections before disconnecting.
Remove — Transfer wires off the old contactor one at a time, then unscrew it 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 energizes the compressor and fan.

Signs You Need a Replacement

Loud buzzing, chattering, or humming from the contactor
Burned, pitted, or welded contacts
Outdoor unit won't start or won't shut off
Visible scorching or melted housing

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 2-Pole 30A Contactor for RGS...

$27.00

Frequently Asked Questions

Does this Contactor fit my ICP RGS120HFAA0AKAA — 24V Coil OEM 1178074 | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP RGS120HFAA0AKAA — 24V Coil OEM 1178074 | 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 RGS120HFAA0AKAA — 24V Coil OEM 1178074 | 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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