ICP 2-Pole 30A 24V Contactor for RGS150LTCA0AAAA — OEM 1178074 | Ships Today

Overview

This is the genuine OEM 2-pole, 30-amp contactor with a 24-volt coil (part number 1178074) for the ICP / Tempstar / Heil RGS150LTCA0AAAA. The contactor is the high-voltage switch that the 24V thermostat circuit energizes to power the compressor and outdoor fan motor on a cooling call. As the coil pulls in, the contacts close and pass line voltage to the load. Pitted or welded contacts, a chattering or burned-out coil, and insect-fouled poles are common failure modes that cause no-cooling, a unit that won't start or shut off, or buzzing at the contactor.

Specifications

Compatibility

Fits the ICP-family RGS150LTCA0AAAA and the shared RGS150 platform sold as Tempstar, Heil, and Comfortmaker. Confirm a 2-pole, 30A, 24V-coil contactor and OEM number 1178074 against your existing part before ordering.

Installation Guide

1. Safety First — Disconnect power at the unit and breaker; verify zero voltage across the contactor terminals with a multimeter.
2. Access — Remove the electrical service panel to expose the contactor.
3. Document — Photograph every line, load, and 24V coil wire before disconnecting.
4. Remove — Unscrew the old contactor from the bracket and transfer wires one at a time to avoid mix-ups.
5. Install — Mount the new 2-pole contactor and reconnect each wire to the matching terminal per your photo.
6. Test — Restore power, call for cooling, and confirm the contactor pulls in cleanly and the compressor and fan energize.

Signs You Need a Replacement

• Outdoor unit won't start, or won't shut off, on a cooling call
• Loud buzzing, humming, or chattering at the contactor
• Pitted, burned, or welded-together contacts
• 24V coil that no longer pulls the contacts in

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.