Therefore, the printing company found Buffalo Forging Company, which produces heating and exhaust systems, and sought a device that can adjust the air temperature and humidity. Buffalo Forging Metallurgy Company entrusted this task to a young engineer with innovative spirit. Carrier thinks that a pipeline full of steam can warm the surrounding air, so if steam is replaced with cold water, the air will blow through the water-cooling coil, and the surrounding area will become cool, while the moisture in the humid air will condense into water droplets, which will make the water droplets fall, and finally the remaining air will be colder and drier.
With this idea, Carrier began to put it into practice. On July 1902 and July 17, this self-designed equipment was installed for this printing company, which achieved good results and produced the world's first air conditioner. 1906 applied for a patent under the name of "air treatment device" in the United States. Carrier is not only the inventor of air conditioning, but also the holder of more than 80 air conditioning patents, and founded one of the largest air conditioning companies in the world: Carrier Company.
1922, Carrier successfully developed the iconic product-centrifugal air conditioner. Since then, the efficiency of air conditioning has been greatly improved, and the adjustment space has increased unprecedentedly. People have become the object of air conditioning services, which is of epoch-making significance.