What is the voltage at car ac compressor?

The voltage at a car's AC compressor typically ranges from 12 to 14 volts. This voltage is supplied by the vehicle's battery and is regulated by the HVAC control module. When the air conditioning is turned on, the HVAC control module sends a signal to the AC compressor clutch, which engages the compressor and allows it to start compressing refrigerant. The voltage supplied to the compressor clutch is typically 12 volts, while the voltage supplied to the compressor's internal components, such as the compressor motor and solenoid, is typically 14 volts.