- 
  
  The machine blows air over cold coils to control room temperature and humidity,
 - 
  
  Willis Haviland Carrier designed the first modern air conditioning system
 - 
  
  Air conditioning comes home for the first time
 - 
  
  invent an individual room air conditioner that sits on a window ledge in apartment buildings
 - 
  
  the first air-conditioned car
 - 
  
  Window units lose cool points as central air comes along. The units consist of a condenser, coils, and a fan.
 - 
  
  Air condititoning has grew and became a more productive technology.