What amp contactor do I need for my ICP system?

The correct replacement for ICP model RGS180HTAA0AAAA — 24V Coil 30/40A | 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 RGS180HTAA0AAAA — 24V Coil 30/40A | 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 Definite Purpose Contactor for RGS180HTAA0AAAA — 24V Coil 30/40A | Ships Today

Name: ICP 2-Pole Definite Purpose Contactor for RGS180HTAA0AAAA — 24V Coil 30/40A | 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 for the ICP/Heil/Tempstar RGS180HTAA0AAAA gas furnace and matched condensing unit. The contactor is an electrically operated switch that uses a low-voltage 24V control signal from the thermostat or control board to energize the high-voltage circuit feeding the compressor and condenser fan motor. Two amperage ratings are available for this model: part 1178074 (30A) and part 1178211 (40A) — match the rating stamped on your existing component. When a contactor fails, the most common symptoms are a system that won't start, chattering or buzzing at the contactor, pitted or welded contacts that keep the compressor running continuously, or burnt terminals. Replacing a worn contactor restores reliable, clean switching and protects the more expensive compressor and motor downstream.

Specifications

Spec	Value
Part Numbers	1178074 (30A), 1178211 (40A)
Type	2-Pole Definite Purpose Contactor
Brand	ICP / Heil / Tempstar
Coil Voltage	24V
Current Rating	30A or 40A
Poles	2
Fitment	OEM

Compatibility

Directly fits the ICP/Heil/Tempstar RGS180HTAA0AAAA and shared-platform Comfortmaker models that use the same control architecture. Verify the amperage rating and coil voltage against your existing contactor before ordering.

Installation Guide

Safety First — Disconnect power at the breaker and disconnect, then verify zero voltage with a multimeter at the contactor terminals.
Access — Remove the unit service panel.
Document — Photograph all line, load, and coil wires before disconnecting.
Remove — Label and disconnect the line/load and 24V coil leads, then unbolt the old contactor from the bracket.
Install — Mount the new contactor and reconnect each wire exactly per your photo, confirming coil polarity and tight terminal torque.
Test — Restore power and confirm the contactor pulls in cleanly on a call for cooling with no chatter.

Signs You Need a Replacement

Audible chattering or buzzing when the system calls for cooling
Pitted, burnt, or welded contacts
Compressor and fan won't energize despite 24V at the coil
Contactor sticks closed and the unit runs continuously

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 Definite Purpose Cont...

$34.00

Frequently Asked Questions

Does this Contactor fit my ICP RGS180HTAA0AAAA — 24V Coil 30/40A | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP RGS180HTAA0AAAA — 24V Coil 30/40A | 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 RGS180HTAA0AAAA — 24V Coil 30/40A | 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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