In 1902, Willis Carrier invented his first air conditioner. This year is considered the year of foundation of the company. Carrier's first client was a New York polygraphist who had problems printing a quality color image, because the changing temperature and humidity caused a change in the size of the paper sheet and the displacement of the paint application sites.

At first, Carrie's air conditioners did not create comfort for people, but were intended to create optimal conditions for equipment in production. Air conditioners regulate the temperature and humidity inside the premises. In particular, textile factories in the south of the United States were among the first consumers of the new Carrier system. The Carrier system was able to stabilize the moisture in a cotton processing factory. The first delivery of the Carrier system outside the United States was made to Japan in 1907 for a silk factory in Yokohama.

In 1915, Willis Carrier created the Carrier Engineering Company. In 1922, a centrifugal chiller manufactured under the Carrier brand was invented. Since this time, the problem of air conditioning of large rooms has been solved. In 1923, the company Carrier released turbocharger refrigeration unit on dichlorethylene.

In the 1920s, the air conditioning and ventilation systems of the brand Carrier appear for the first time in the world in office and office buildings, shops and theaters. Carrier systems are installed in the buildings of Congress and the US Senate, the White House and the US Supreme Court, Madison Square Garden. The main test for Carrier was the order for the installation for The Rivoli Theater in New York. After that, Carrier products were widely advertised and for 6 years (1925-1930) more than 300 American theaters are equipped with air conditioning systems. In 1931, Carrier created the first household air conditioner for the house, and in 1936 installed the first car air conditioner in the bus, which runs around the "hot" world route Damascus - Baghdad.