Cooling performance can drop because of airflow restrictions, refrigerant loss, or sensor faults, and small issues often show up as longer run times. A diagnostic visit for AC repair typically starts with thermostat verification, filter and coil inspection, and electrical testing at the contactor and capacitor. Technicians may measure static pressure, check blower settings, and review duct leaks that can overheat motors and strain compressors. For sudden breakdowns during heat waves or after-hours outages, emergency AC repair focuses on... read full review »