ICP 2-Pole 30A Contactor for RGS121SRBB0AAAA — 24V Coil | Ships Today

Overview

This is the genuine OEM 2-pole definite-purpose contactor (part number 1178074) for the ICP / Heil / Tempstar RGS121SRBB0AAAA gas furnace and its matched condensing unit. The contactor is rated for 30 amps per pole with a 24-volt control coil. When the thermostat calls for cooling or compressor operation, the 24V coil energizes and pulls the contacts closed, sending line-voltage power to the compressor and condenser fan motor. A failing contactor is one of the most common HVAC service calls — pitted, welded, or chattering contacts prevent the system from starting reliably and can damage the compressor.

Specifications

Compatibility

Designed as the factory replacement for the ICP/Heil/Tempstar RGS121SRBB0AAAA. As a 2-pole 30A/24V definite-purpose contactor it is a common-spec part that also services many comparable Carrier, Bryant, and Comfortmaker condensing units using the same coil and amperage rating. Verify your old contactor's amp and coil-voltage stamp before installing.

Installation Guide

1. Safety First — Disconnect power at the breaker and the outdoor disconnect, then verify zero voltage with a multimeter.
2. Access — Remove the unit's service/electrical panel.
3. Document — Photograph every wire and terminal before disconnecting.
4. Remove — Label and disconnect the line, load, and 24V coil wires, then unscrew the old contactor from its bracket.
5. Install — Mount the new contactor and reconnect each wire to the matching terminal per your photo.
6. Test — Restore power and confirm the contacts pull in cleanly on a thermostat call with no chatter.

Signs You Need a Replacement

• Compressor or condenser fan won't start, or starts intermittently.
• Buzzing, humming, or chattering from the contactor.
• Visibly pitted, burned, or welded contacts.
• Coil doesn't pull the contacts in on a 24V call.

Shipping & Returns

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