Have you heard what our Auto A/C eBook customers are saying?

UV Dyes and UV Leak Detection Lights (Black Light): Typically, the dye is injected into the system or added when the system is open. The UV dye will fluoresce (or glow) under UV light exposing the area of the leak. The dye is an excellent method of pinpointing the leak. However, it also relies on you being able to visually inspect all the components of the A/C system. In today's systems, components like evaporators are difficult to inspect visually without removing them. Additionally, to get the most effective and accurate results from UV dyes, the light used should be producing true UV light; not 'near UV' or 'blue' light. Only true UV light will fluoresce the dye properly. Lights that are promoted or sold as 'near UV' of 'blue' lights are little better than toys. Additionally, when using true UV lights properly, there is no requirement for the yellow UV enhancing glasses.  

Electronic Leak Detectors:  Almost all electronic leak detectors rely on a sample of air to detect the refrigerant or some component of the refrigerant. Typically, these tools are very accurate and can, in some cases, find leaks that are considered to be 'normal'. As an example, compressor shaft seals typically leak because they run dry of oil. The refrigerant oil or A/C compressor oil is required to maintain the seal. Electronic leak detectors frequently detect shaft seal leaks that can not be repaired with replacement seals. Additionally, the calibration of the leak detector is very important to the accuracy and reliability of the leak test. You should always follow manufacturer's instructions and keep the sensor tips clean and free of debris.

Nitrogen Leak Test: Although not the most common method of leak detection, it is one of the most reliable! Regardless of what other 'writers' have said, professional auto A/C service technicians understand the importance of using Nitrogen. What's best about nitrogen is that it allows the service technician to perform the leak test at operating pressures. Adding refrigerant and completing the leak test at 70 p.s.i. will not find all the leaks on the high pressure side of the A/C system. It's very common for an A/C condenser to leak at 150+ p.s.i. But finding that leak with only 70 p.s.i. of refrigerant pressure could prove impossible. With nitrogen, the system can safely be pressurized to (up to) 200 p.s.i. That allows a complete leak test at operating pressures in order to accurately diagnose both the high and low pressure sides of the system. The use of soap like 'bubble leak check' fluids and electronic leak detectors in conjunction with nitrogen makes for the ideal complete, professional leak detection. Find all the tips and tricks to using nitrogen as a reliable method of leak detection for all automotive A/C systems.

Although the method of leak detection is important, it is equally important to understanding how these systems really work and what you can do to make them more effective. In fact, many of the tips and tricks are never published in the manufacturer's instructions or in auto A/C service manuals. Leak Detection for Auto A/C systems reveals all the tricks the pros use every day for accurate and reliable leak detection of any auto A/C system on the road!