Concept of Cooling

Though central air didn't appear until the second half of the 20th century, the history of air conditioning dates back centuries.

The desire and need to cool the air goes back millennia. Air conditioning began in ancient Egypt and was perfected in the 20th century.

As summer approaches, bringing with it soaring temperatures and unbearable humidity, millions of people will turn on that marvel of discovery and invention–the air conditioner. Today’s air conditioners, while operating on the same fundamental science as Carrier’s 1933 system, incorporate advancements in vapor compression, diagnostics and controls, electronic sensors, materials, and energy efficiency.