Repair and test kits have a variety of applications and are usually used by technicians servicing the HVAC/R systems, however, with some amount of knowledge and understanding of how this structure works, anyone is able to use these kits to analyze the system and identify the problem. Besides the above-mentioned instruments, there are many devices like thermometers, filters, various liquid injectors, replacement parts, refrigerant identifiers, etc. These instruments are usually grouped in kits and sets according to their intended use and the system that they are applied to. These kits may vary depending on the application and on the price. Some kits have simple sets of hand tools needed to adjust and open outer coverings and connections, while others have expensive instruments like leak detectors and some types of meters. Find the best deals from the best manufacturers - only on Mega Depot!