Why RPM high on AC?

High RPM (revolutions per minute) on an air conditioning (AC) unit typically indicates that the compressor is working harder to maintain the desired temperature or to compensate for increased cooling demand. This can occur due to factors such as high outdoor temperatures, low refrigerant levels, or dirty filters that restrict airflow. While higher RPM can enhance cooling efficiency, it may also lead to increased energy consumption and potential wear on the unit over time. Regular maintenance can help prevent excessive RPM issues.