Air con or air conditioning is a popular device that keeps your surroundings cool and comfortable. There are numerous synonyms for this device that you might come across, depending on your region and local slang. Some commonly used synonyms include AC, cooling, HVAC (heating, ventilation, and air conditioning), air cooling, and climate control. Other variations include air cooler, air chiller, and air conditioning unit. In some areas, people simply refer to it as "the thermostat" or "the cooler." Regardless of what you call it, air con is an essential device for both residential and commercial settings, as it helps to create a comfortable and livable environment.