How do you find a leak on AC system?

To find a leak in an AC system, start by visually inspecting the components, including hoses, connections, and the compressor, for any signs of oil residue or refrigerant frost. You can also use a leak detection dye added to the refrigerant, which will glow under UV light, making leaks visible. Additionally, employing an electronic leak detector can help pinpoint the source of the leak by sensing refrigerant gas in the air. If the leak is not easily found, consider consulting a professional for a thorough inspection.