Evacuation Tools Every HVAC Tech Should Use

As you probably already know, refrigerant and oil are the only two substances that should be within a refrigeration piping circuit. Any amount of moisture, air, or combination of non-condensable gasses in the system can wreak havoc on the proper function of your system. In order to maintain the integrity of your refrigerant circuit, proper evacuation must take place anytime the system is opened and exposed to outside elements. The EPA states that systems should be evacuated to a minimum of 300 microns. Which tools should you use to ensure that you are pulling a proper vacuum?