Allcool

Air conditioning has changed the way a wealth of people live in this modern world. Stepping out of the hot and humid outdoors into an air conditioned building is like stepping into a totally different climate zone. It is very rare home or building that is built today that doesn't include central air conditioning. It has moved within a few short years from a luxury to a necessity. The scientific principle behind air conditioning is the heat exchange properties of condensation and evaporation.