Charge, airflow or compressor
Refrigerant doesn't get used up. If the charge is low, there's a leak, and adding more without finding it just means another call next summer. We test pressures and temperatures, look for the leak, and tell you whether it's worth repairing.
Airflow problems are just as common: a clogged filter, a dirty indoor coil, a weak blower or ductwork that's too small. A compressor or fan motor on its way out shows up in the electrical readings before it fails completely.

