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This OEM 2-pole, 30 Amp contactor with a 24V coil (part #1178074) is the main switching relay for the ICP/Tempstar/Heil RHH036H0XA0AAAA heat pump. On a thermostat call, the 24-volt coil energizes and closes both poles, delivering line voltage to the compressor and condenser fan. As one of the highest-cycle components in the unit, the contactor wears out from arcing across its contacts — leading to pitting, welding, or coil failure. Typical symptoms include a buzzing or chattering relay, a compressor that hums but won't start, or a unit that simply won't energize. This 30A, 2-pole replacement restores clean, reliable switching.
| Spec | Value |
|---|---|
| Part Number | 1178074 |
| Type | Definite Purpose Contactor |
| Brand | ICP / Tempstar / Heil |
| Rating | 30 Amp |
| Poles | 2-Pole |
| Coil Voltage | 24V |
Designed for the ICP/Tempstar/Heil RHH036H0XA0AAAA heat pump condensing unit and shared-platform models across the Comfortmaker and Carrier-built family. Verify the 30A rating, 2-pole configuration, and 24V coil against your existing contactor before installing.
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.