Turn the cooling system off and set the thermostat fan to on if the blower is working. Put towels near the indoor coil or drain area and allow the ice to melt naturally. Do not chip at the coil or use a heat gun. Ice usually forms because airflow is too low, the filter is blocked, the evaporator is dirty, or refrigerant is low from a leak. Once thawed, the system needs a diagnosis rather than a quick recharge. Running an iced coil can damage the compressor and send water into places it should not go. Note whether the problem followed a filter change, a hot day, or a recent repair.
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.