ICP 2-Pole 30A 24V Contactor for RGS120HFCA0AAA — Definite Purpose | Ships Today
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Overview
This OEM 2-pole definite purpose contactor (part #1178074) is the electrical switch that powers the compressor and condenser fan motor in your ICP/Tempstar/Heil RGS120HFCA0AAA system. Rated at 30 amps with a 24-volt control coil, it energizes the high-voltage circuit whenever your thermostat calls for cooling or heat-pump operation. When the 24V coil is energized, the contacts close and send line voltage to the compressor; when the call ends, a spring opens the contacts. Contactors are one of the most common HVAC failure points because their contacts arc and pit every cycle. Symptoms of a failing contactor include a unit that won't start, audible buzzing or chattering at the contactor, welded contacts that keep the compressor running, or burned and blackened terminals.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1178074 |
| Type | Definite Purpose Contactor |
| Brand | ICP / Tempstar / Heil |
| Poles | 2-Pole |
| Contact Rating | 30 Amps |
| Coil Voltage | 24V |
| Fits Model | RGS120HFCA0AAA |
Compatibility
Direct OEM replacement for the ICP Tempstar Heil RGS120HFCA0AAA gas furnace/air handler platform. This 30A 24V 2-pole contactor is also a common service part across many ICP-family condensing units and air handlers that use the same definite-purpose footprint. Always confirm your existing contactor's coil voltage (24V) and amp rating before installing.
Installation Guide
- Safety First — Disconnect power at the breaker and the unit disconnect, then verify zero voltage with a multimeter before touching any wiring.
- Access — Remove the service panel covering the control/electrical compartment.
- Document — Photograph all wires and terminal positions before disconnecting anything.
- Remove — Note the line, load, and 24V coil leads, then move each wire from the old contactor to the matching terminal on the new one. Unscrew the old contactor from its bracket.
- Install — Mount the new contactor, reconnect every wire exactly per your photo, and confirm the coil terminals carry the 24V control leads.
- Test — Restore power and verify the contacts pull in on a call for cooling and drop out when satisfied.
Signs You Need a Replacement
- Compressor or condenser fan won't start on a cooling call
- Loud buzzing, humming, or chattering from the contactor
- Burned, pitted, or blackened contacts and terminals
- Unit won't shut off because contacts have welded together
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