What is the main function of an air conditioner?

The primary function of an air conditioner is to remove heat and humidity from indoor air, making this the most accurate choice. Air conditioning systems achieve this by utilizing a refrigeration cycle that absorbs heat from inside a building and transfers it outdoors. This process not only cools the air but also reduces humidity levels, creating a comfortable indoor environment.

While distributing fresh air, ventilating spaces, and filtering pollutants are important aspects of indoor air quality, they are not the main functions of an air conditioner. Many air conditioning systems are designed primarily for cooling and dehumidifying, which is why they excel in hot and humid climates. Such systems often need to be complemented by ventilation systems for fresh air intake and air quality management.