What amp contactor do I need for my ICP system?

The correct replacement for ICP model RGS180HDCA0AAAA — 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 RGS180HDCA0AAAA — 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/40A Contactor for RGS180HDCA0AAAA — 24V Coil | Ships Today

Name: ICP 2-Pole 30A/40A Contactor for RGS180HDCA0AAAA — 24V Coil | Ships Today
Brand: ICP
SKU: 1178074-GEN
Price: 32.00 USD
Availability: InStock

SKU: 1178074-GEN Brand: ICP

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Overview

This OEM 2-pole definite purpose contactor is the factory switching relay for the ICP Tempstar/Heil RGS180HDCA0AAAA. It is offered in two amp ratings — 30A (part 1178074) and 40A (part 1178211) — both with a 24V control coil. The contactor closes its line-voltage contacts when the 24V coil is energized by the control board or thermostat, powering the compressor and/or condenser fan. Pitted, welded, or chattering contacts are a leading cause of no-cool calls and short cycling. Choose the amp rating that matches your original contactor.

Specifications

Spec	Value
Part Numbers	1178074 (30A), 1178211 (40A)
Type	2-Pole Definite Purpose Contactor
Brand	ICP (Tempstar / Heil)
Amp Ratings	30A / 40A
Coil Voltage	24V
Poles	2
Fit	OEM Exact Fit

Compatibility

Direct OEM replacement for the ICP Tempstar Heil RGS180HDCA0AAAA. Verify whether your unit uses the 30A (1178074) or 40A (1178211) contactor and match the coil voltage and terminal layout before installing.

Installation Guide

Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
Access — Remove the electrical access panel on the unit.
Document — Photograph all line, load, and 24V coil connections before disconnecting.
Remove — Label and remove the wires, unscrew the old contactor from its mounting.
Install — Mount the new contactor (matching amp rating) and reconnect each lead per your photo.
Test — Restore power, call for cooling, and confirm the contactor pulls in cleanly and energizes the load.

Signs You Need a Replacement

Loud buzzing, humming, or chattering from the contactor
Burnt, pitted, or welded contacts
Compressor or condenser fan fails to start on a cooling call
Contactor pulls in but no line voltage passes to the load

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/40A Contactor for...

$32.00

Frequently Asked Questions

Does this Contactor fit my ICP RGS180HDCA0AAAA — 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP RGS180HDCA0AAAA — 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 RGS180HDCA0AAAA — 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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