In what year was the world's first air conditioner born? What brand? Which country is it produced in?

1. The world’s first air conditioner was born in the United States in 1902, and it was Carrier air conditioner.

2. Inventor Willis Carrier is known as the "Father of Air Conditioning" by future generations because of his great contribution to the air conditioning industry.

3. Air conditioner, that is, air conditioner, regulates temperature and humidity. Hanging air conditioner is a unit used to provide a space area (usually closed) to handle changes in air temperature. Its function is to adjust the temperature, humidity, cleanliness, air flow rate and other parameters of the air in the room (or enclosed space or area) to meet the requirements of human comfort or process.

4. Air conditioners are divided into single cooling air conditioners and dual cooling and heating air conditioners. The working principles are the same. The refrigerant generally used in air conditioners is Freon. The characteristic of Freon is that when it changes from gaseous state to liquid state, it releases a lot of heat. When it changes from liquid to gas, it absorbs a lot of heat. Air conditioners are designed based on this principle.

5. In the design and manufacturing of air conditioners, the temperature is generally allowed to be controlled between 16 and 32°C. If the temperature is set too low, on the one hand it will increase unnecessary power consumption, and on the other hand it will cause a large temperature difference between indoor and outdoor. People entering and exiting the room will not be able to quickly adapt to the temperature changes and will easily catch a cold.

6. The air conditioner is accompanied by dehumidification during the cooling process. The relative humidity of the environment that people feel comfortable should be around 40~60%. When the relative humidity is too high, such as above 90%, people still feel bad even if the temperature is within the comfortable range.