People used different ways for keeping them cool before the invention of air conditioners. Air duct water was used by ancient Romans that helped to circulate water through the walls. The Chinese used some other ways to keep themselves cool in the hot summer. However, things changed with the invention of air conditioners.

The discovery of air conditioners has made our life much easier during the summer. Now we are dependent on air conditioners and do not even want to imagine our life without it. At first, there were limited models or air conditioner available in the market but now improvement in technology has given rise to new models which include split air conditioners.

The condenser of a split air conditioner is installed outside the home but its unit is placed inside the building. It is connected by means of a refrigerant pipe. Split air conditioners are available in different capacities depending on the size of the room and make relatively little noise when compared to other models. Split air conditioners are available in 0.50 ton, 0.75 ton, 1 ton, 1.5 ton and 2 tons. The BTU (British Thermal Units), i.e. the cooling capacity, must be noted before buying a split air conditioner.

Few manufacturers also provide a split air conditioner that has the capacity to deliver 9000 BTUs of power which can cover an area from 200 to 300 square feet. Split air conditioners can be mounted on the wall. Always use professional help to install a split air conditioner.