In general sense, air conditioning refers to any form of cooling, heating, ventilation or disinfection, which changes the condition of air. But more commonly, the word air conditioning is used for cooling and removing moisture from indoor air. In general, air conditioner is an apparatus, used for controlling the temperature and humidity of an enclosed area. Air conditioners have been manufactured since many previous years, but the quality was not much better. With the passage of time, the quality got better and better. The first modern electric air conditioner was invented by Willis Haviland Carrier in 1902.

Today, high-quality and more reliable air conditioners are being manufactured by many companies. Now-a-days Air conditioner is being used in almost every shopping mall, houses and hospitals. The air conditioner is also used in science laboratories to maintain the temperature to required needs. The air conditioner is becoming an essential need for the people who live in hot areas, because the temperature in such areas in the summer season rises very high. To get air conditioning with the help of a machine is a modern invention, but the cooling of a building is a not a modern way. The Romans were known to be the people who circulate water through the walls of the buildings and homes in order to cool them. This procedure was expensive and only the rich ones could only afford such procedure of luxury.

There were so many other ways, used to get fresh and cool air which is now called as air conditioning. Window towers and cisterns were also used to cool buildings and homes. Cisterns were the large open pools in the middle square. At that time, the underground tanks were not used. These cisterns have the collected rain water in them. The window towers had windows and these were made to catch the wind and the internal vanes were made to direct the airflow down into the building. The British are the ones who had invented the most modern machine. Michael Faraday, who was an inventor and scientist, discovered in 1820, that liquefying and compressing ammonia could really chill the air when it was allowed to evaporate. Then with the passage of time, there was a lot of development and modernization in the technology. More new technology was invented and used in order to really create something that could really solve the problem of air conditioning. There are a lot of different types of air conditioning applications, which are used to keep the environment of the room very friendly and cool. An air conditioning system can really make the building or room, a comfortable and cool place to live in. Comfort makes the buildings feasible. Air conditioning is really a very good idea to get cool air and keep you fresh and comfortable in the hot season. A lot of air conditioning products are available in the markets and online as well.