What should average temp drop be across home ac coil?

The average temperature drop across a home air conditioning coil, known as the temperature split, should typically range between 15 to 20 degrees Fahrenheit (8 to 11 degrees Celsius). This drop indicates how effectively the system is cooling the air. If the temperature drop is significantly lower than this range, it may suggest issues such as low refrigerant levels or airflow problems. Conversely, a higher drop could indicate a restriction in airflow or other system inefficiencies.