Confirm the thermostat is in cooling mode and the indoor fan is set to auto. Check whether the outdoor unit has power and whether the filter is blocked. If the outdoor coil is packed with cottonwood or dirt, turn the system off before clearing loose debris around it. Warm air can also result from a failed capacitor, low refrigerant caused by a leak, a frozen coil, or a control fault. Do not add refrigerant based on a gauge reading alone. The proper repair includes finding the reason for low charge, checking airflow, and measuring system performance. A service call is worthwhile when the unit repeatedly trips a breaker or refreezes.
What to ask next
The right next step depends on the system, the urgency, and the building. Keep the model number, symptoms, age, and any previous service notes nearby when you request an estimate. A professional should explain the diagnosis or sizing basis in plain language.
When to bring in a professional
Use the callback form to describe the issue, or review HVAC services to find the closest starting point. For urgent loss of heat, see what to do in a cold snap.