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This OEM 2-pole definite purpose contactor is the primary switching relay for the ICP/Tempstar/Heil RGS091HEAB0AAAA gas furnace and condensing unit. When the thermostat calls for cooling, the 24V control circuit energizes the contactor coil, pulling the contacts closed to deliver line voltage to the compressor and condenser fan motor. Available in 30A (OEM 1178074) and 40A (OEM 1178211) contact ratings, both with a 24V coil. A worn contactor is one of the most common no-cooling failures — telltale signs include a humming or chattering contactor, pitted or welded contacts, a unit that won't start, or a compressor that runs nonstop because the contacts have stuck closed. A fresh contactor restores clean switching and protects the compressor from arcing and voltage drop.
| Spec | Value |
|---|---|
| Part Numbers | 1178074 (30A), 1178211 (40A) |
| Type | Definite Purpose Contactor |
| Brand | ICP / Tempstar / Heil |
| Poles | 2-Pole |
| Contact Rating | 30A / 40A |
| Coil Voltage | 24V |
Direct-fit OEM replacement for the ICP/Tempstar/Heil/Comfortmaker RGS091HEAB0AAAA and many ICP-family condensing units and furnaces that share the same control architecture. Verify the contact amperage (30A vs 40A) against the part being replaced.
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.