HVAC (Heating, Ventilation, and Air Conditioning) systems are designed to provide thermal comfort and indoor air quality in buildings. They are used to regulate temperature, humidity, and air quality. EVAP (Evaporative Cooling) systems are a type of HVAC system that uses the natural process of evaporation to cool air. EVAP systems use water to absorb heat from the air, which is then released into the atmosphere. This process is more energy efficient than traditional HVAC systems, as it does not require the use of a compressor or refrigerant. EVAP systems are also more environmentally friendly, as they do not produce any harmful emissions.