What amp contactor do I need for my ICP system?

The correct replacement for ICP model RGS120HTCB0AAA — 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 RGS120HTCB0AAA — 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 24V Contactor for RGS120HTCB0AAA — OEM 1178074 | Ships Today

Name: ICP 2-Pole 30A 24V Contactor for RGS120HTCB0AAA — OEM 1178074 | Ships Today
Brand: ICP
SKU: 1178074-GEN
Price: 32.00 USD
Availability: InStock

SKU: 1178074-GEN Brand: ICP

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

Overview

This genuine OEM 2-pole definite purpose contactor (part number 1178074) is rated 30 amps with a 24-volt control coil for the ICP/Tempstar/Heil RGS120HTCB0AAA. The contactor is the electrically operated switch that energizes the compressor and condenser fan when the thermostat calls for cooling. A 24V signal pulls in the coil, closing both poles to pass line voltage to the load. Worn, pitted, or welded contacts are one of the most common causes of a system that won't start, chatters, or fails to shut off. Replacing a failing contactor restores reliable switching and protects the compressor from low-voltage and short-cycling damage.

Specifications

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

Compatibility

Fits the ICP family model RGS120HTCB0AAA and equivalent ICP, Tempstar, Heil, and Comfortmaker units using a 2-pole 30A 24V coil contactor. Verify pole count, amp rating, and coil voltage against your existing part.

Installation Guide

Safety First — Disconnect power at the disconnect and breaker. Verify zero voltage with a multimeter across the contactor terminals.
Access — Remove the control-panel service cover.
Document — Photograph every wire and terminal position before disconnecting.
Remove — Label and disconnect the line, load, and 24V coil wires, then unbolt the old contactor.
Install — Mount the new contactor and reconnect each wire to its matching terminal per your photo.
Test — Restore power and confirm the contactor pulls in on a cooling call and drops out on satisfy.

Signs You Need a Replacement

Compressor or condenser fan won't start on a cooling call
Buzzing, chattering, or humming at the contactor
Pitted, burned, or welded contacts that won't release
System fails to shut off 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 24V Contactor for...

$32.00

Frequently Asked Questions

Does this Contactor fit my ICP RGS120HTCB0AAA — OEM 1178074 | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP RGS120HTCB0AAA — 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 RGS120HTCB0AAA — 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.

Menu