You cannot overemphasis the need for controlled climate especially in humid, cold and temperate environment. This is a method to making the environment conducive to live. While making your life more comfortable, you don’t make it hard for others that is why it is important to do heating, ventilation, air-conditioning and cooling (HVAC) business right way.  In this training, you will understand among others how to recover or recharge your hvac system with refrigerant without polluting the atmosphere.