There are many ways to detect a refrigerant leak. One way is to use a simple eye and ear test. Look for oil stains or listen for a pinhole sound at Schrader valves, weld joints, threaded fittings and dissimilar metal joins (like copper to aluminum). This method works best in well-lit and quiet environments. Another way is to use a soap bubble test or an electronic detector that uses sensors to locate the source of a leak. This is a great option for HVAC technicians who need to get to the problem quickly.
Other tools to consider are air pressure meters and vacuum gauges, which can help you check the system for proper operation. Using the right tool for the job can save you time, money and headaches.
The Fieldpiece SRL8 is a popular portable refrigerant leak detector that is ideal for many different types of HVAC systems. It is sensitive to most common refrigerants and has a user-friendly interface that makes it easy to read. It also has a mute button, making it more convenient to use in noise-sensitive environments. It is highly durable and has a long runtime on batteries. It requires regular zeroing and calibration to ensure consistency and precise detection.
Another option is the Wale&Morn WJL-6000pro. This high-quality detector is compatible with R22, R134A, R600A, R290, R1234YF, CFCs, HCFCs and HFOs. It features a bar graph display and audible and visual alarms. Its lightweight design makes it easy to carry and is perfect for DIY enthusiasts or professional HVAC technicians who need a reliable tool to quickly detect leaks. Top 10 refrigerant leak detectors