What amp contactor do I need for my ICP system?

The correct replacement for ICP model RGS120LDAA0AAA — 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 RGS120LDAA0AAA — 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 RGS120LDAA0AAA — 24V Coil | Ships Today

Name: ICP 2-Pole 30A Contactor for RGS120LDAA0AAA — 24V Coil | Ships Today
Brand: ICP
SKU: 1178074-GEN
Price: 24.95 USD
Availability: InStock

SKU: 1178074-GEN Brand: ICP

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Overview

This OEM 2-pole, 30-amp definite-purpose contactor (ICP part #1178074) is the electrical switch that energizes the compressor and condenser fan motor in your ICP / Heil / Tempstar RGS120LDAA0AAA system. When the thermostat calls for cooling, the 24V control coil pulls the contacts closed, sending line voltage to the outdoor unit. Over years of cycling, the silver-alloy contacts pit, burn, and weld, while the coil can fail open. A failing contactor causes the most common no-cool symptoms: a unit that hums but won't start, intermittent operation, chattering at the contactor, or an outdoor fan and compressor that simply stay dead while the indoor blower runs.

Specifications

Spec	Value
Part Number	1178074
Type	Definite-Purpose Contactor
Brand	ICP (Heil / Tempstar)
Poles	2
Rating	30 Amp
Coil Voltage	24V

Compatibility

Direct OEM fit for the ICP / Heil / Tempstar RGS120LDAA0AAA gas furnace and matched condensing units. The 2-pole 30A / 24V configuration is also a common replacement across many Carrier-family residential split systems — confirm amp rating, pole count, and 24V coil against your old part before installing.

Installation Guide

Safety First — Disconnect power at the unit disconnect and breaker; verify zero voltage at the contactor terminals with a multimeter.
Access — Remove the outdoor unit's electrical service panel.
Document — Photograph every wire and terminal position before disconnecting anything.
Remove — Label and disconnect the line, load, and 24V coil wires, then unscrew the old contactor from the bracket.
Install — Mount the new contactor and reconnect each wire exactly per your photo; confirm coil leads land on the 24V terminals.
Test — Restore power, call for cooling, and verify the contacts pull in cleanly and the compressor and fan energize.

Signs You Need a Replacement

Outdoor unit hums or buzzes but compressor and fan won't start
Visibly pitted, burned, or melted contacts
Chattering or rapid clicking at the contactor
Stuck contacts that keep the unit running when the thermostat is satisfied

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...

$24.95

Frequently Asked Questions

Does this Contactor fit my ICP RGS120LDAA0AAA — 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP RGS120LDAA0AAA — 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 RGS120LDAA0AAA — 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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