The answer to 'how to maintain AC repair' is to perform regular maintenance and cleaning on your air conditioning system. This includes changing the air filter every 1-3 months, cleaning the outdoor condenser unit, and having a professional HVAC technician service your system annually. Proper maintenance will help ensure your AC runs efficiently and catch any issues before they become major problems.
It's important to follow all safety precautions when working on your AC system, such as turning off power, using caution around refrigerant lines, and avoiding any electrical work unless you're a qualified technician. Attempting major repairs or modifications yourself can be dangerous and may void your warranty, so it's best to call a professional HVAC contractor for anything beyond basic maintenance.