The working principle of the air cooler is evaporative home air cooler cooling, in which the evaporation of water is used to cool the air. A simple example of evaporative cooling is human sweating. When sweat starts to evaporate, it will absorb the extra heat absorbed from the skin in the form of gas, thereby creating a cooling effect. In the case of an air cooler, warm and fresh air from the environment passes through the evaporative medium, in this case the water moves through the cooling pad with the help of a water pump. The flowing water extracts heat from the warm air and starts to evaporate, leaving cool, fresh and humid air, which enters the room through a fan.

Nowadays, many air coolers are equipped with special trays for adding ice cubes, which helps to cool the water, thereby achieving fast and powerful cooling. The average air cooler consumes 10 times less energy than traditional air conditioners, so it is expected to significantly reduce consumers' electricity bills. Some air coolers today are also equipped with inverter technology to further reduce energy consumption. Compared with ordinary air coolers, Dongfang Electric's variable frequency air coolers adopt ECM (electronically commutated motor) technology, which can save up to 50% of energy and electricity costs.

An additional advantage is that the inverter air cooler produces much less noise due to its electronically commutated motor, making your work and participating in video calls easier and more enjoyable. Whether it is the initial purchase and installation costs or the operating and maintenance costs, air coolers are cheaper than air conditioners. Unlike air conditioners that use harmful chlorofluorocarbons, air coolers use the natural process of evaporative cooling with zero carbon emissions, which makes it an environmentally friendly choice.

Air coolers circulate fresh air because they take in hot air from the outside and then cool it down. In addition, the circulating air is filtered, moist and easy to breathe, and it also keeps your skin hydrated. On the other hand, air conditioning circulates the same old air that exists in the room. Unlike air conditioners that need to be professionally installed and work as a fixed device, the air cooler does not need to be installed, you just need to fill the water tank with water and plug in the power cord. In addition, the air cooler is very portable and can be moved around very easily.