Advantages: the indoor air temperature can be obviously adjusted to different temperatures as required. And listed early, many brands, many choices.
Disadvantages: large volume, high price, closed room, no air circulation after use. The indoor air temperature is uneven, which makes people feel uncomfortable and prone to air conditioning disease. At the same time, the power is large and the power consumption is large, which is unacceptable to consumers.
Evaporative air cooler
Advantages: Compared with ordinary fans, the temperature is reduced by about 5-6 degrees, the power consumption is low, the price is moderate and low, the volume is small, and the movement is convenient.
Disadvantages: it is not very effective for large-area refrigeration, has no dehumidification function, is not easy to use in high temperature places, and will increase the temperature in the air when used.