Air-Conditioning
Who invented
Air-Conditioning?
Willis Havilland Carrier helped to invent modern air-conditioning . Carrier studied the temperature and humidity of air. He started a company to make air-conditioning systems.
Why do we use it?
Carrier discovered that people are more comfortable when temperature and humidity are controlled. He invented a way to control temperature and humidity. People began to notice that air-conditioned air was comfortable and refreshing.
How we use it
Air-conditioners were first used in factories where they needed to control the temperature and humidity. Later, movie theaters began to install air-conditioners. They hoped that it would attract more costumers doing the hot weather. Soon more businesses got air-conditioners. Today, many homes, schools, and cars have air-conditioners.