The answer to 'what is AC repair' is the process of diagnosing and fixing issues with a home's air conditioning system. This can include repairing or replacing components like the compressor, condenser, evaporator coil, or refrigerant lines. AC repair is necessary when the system is not cooling properly, making strange noises, or consuming too much energy.
Homeowners should call a professional HVAC technician for AC repair, as it requires specialized knowledge and tools to properly diagnose and fix the problem. Attempting DIY AC repairs can be dangerous and may end up causing more damage if not done correctly.