What amp contactor do I need for my ICP system?

The correct replacement for ICP model RGS120LTCB0AAA — 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 RGS120LTCB0AAA — 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 RGS120LTCB0AAA — 24V Coil | Ships Today

Name: ICP 2-Pole 30A Contactor for RGS120LTCB0AAA — 24V Coil | Ships Today
Brand: ICP
SKU: 1178074-GEN
Price: 26.00 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 OEM definite-purpose contactor (part 1178074) is the switching relay that energizes the blower or condenser load in your ICP, Tempstar, and Heil RGS120LTCB0AAA gas furnace system. It is a 2-pole device rated for 30 amps per pole with a 24-volt control coil. When the thermostat or control board calls for operation, the 24V coil pulls the contacts closed, completing the line-voltage circuit to the load. Contactors take a beating — every cycle is a mechanical close and open under load — so they are one of the most common HVAC failure points. Symptoms of a failing contactor include a humming or chattering noise, pitted or welded contacts that keep the load running continuously, or no operation at all because the contacts no longer close. Replacing a worn contactor restores reliable switching and prevents downstream damage to motors and boards.

Specifications

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

Compatibility

Direct OEM replacement for the ICP / Tempstar / Heil RGS120LTCB0AAA gas furnace. The same 2-pole 30A 24V contactor is used across many ICP-family condensing units and air handlers — match the part number 1178074 and the coil voltage to confirm fit.

Installation Guide

Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter before touching any wiring.
Access — Remove the service panel to expose the contactor in the control compartment.
Document — Photograph all line and coil wires before disconnecting anything.
Remove — Note the L1/L2 line terminals and the two 24V coil terminals, then transfer wires one at a time. Unscrew the old contactor from its mounting bracket.
Install — Mount the new contactor, reconnect each wire to its matching terminal per your photo.
Test — Restore power and confirm the contacts pull in cleanly on a call for operation with no chatter.

Signs You Need a Replacement

Loud humming, buzzing, or chattering from the contactor
Pitted, burned, or welded contacts that won't release
System runs continuously or won't start at all
Visible arcing or scorch marks on the terminals

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...

$26.00

Frequently Asked Questions

Does this Contactor fit my ICP RGS120LTCB0AAA — 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP RGS120LTCB0AAA — 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 RGS120LTCB0AAA — 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.

Menu