What detection tools are commonly used to identify refrigerant leaks in HVAC systems?

Several detection tools are available to identify refrigerant leaks in HVAC systems, including electronic leak detectors, ultrasonic leak detectors, and dye injection methods. Electronic leak detectors use sensors to detect the presence of refrigerant in the air, while ultrasonic leak detectors use high-frequency sound waves to detect the hissing noise associated with refrigerant leaks. Dye injection methods involve injecting a fluorescent dye into the system, which can then be detected using a UV lamp. Each method has its own advantages and limitations, and the choice of detection tool will depend on the specific system and leak location.