as the case may be, if it is in an area with high air humidity, it will be better to turn on dehumidification than refrigeration. If the air humidity is not very high, it is better to turn on the refrigeration, but the temperature should be controlled at around 27 degrees. The dehumidification mode of air conditioner cannot be used as refrigeration mode, and long-term use will cause the air to become dry. The difference between the two modes: 1. The dehumidification mode and refrigeration mode of air conditioner are different, the biggest difference is the cooling area of evaporator and the state of fan. 2. The main purpose of air conditioning in refrigeration mode is to quickly reduce the temperature of indoor air, so it is necessary to fully increase the contact area between indoor evaporator and indoor air. The fan will not only suck indoor air to the evaporator surface to cool down, but also blow the cooled air indoors. 3. In the dehumidification mode, the main purpose of air conditioning is to quickly reduce the humidity of indoor air, so it is necessary to reduce the contact area between a certain part of the evaporator and indoor air, so that the temperature of this part of the evaporator becomes lower and more condensed water is produced. 4, and in the dehumidification mode, the air conditioner can't adjust the wind speed, because at this time, the fan will only inhale the air and will not blow out.