Air conditioners help to regulate the temperature and humidity in a room. They have a variety of function modes, including cooling the room or using a fan to circulate the air. An air conditioner also has a dry mode. This is a function concerned with the humidity level in a room.
The dry mode on an air conditioning unit works by operating the fan system, without expelling cold air. The fan sucks air into the air conditioning unit. The moisture in the air evaporates within the unit and the dry air is blown back into the room. The extracted water vapour is siphoned off into a drain from the unit. Dry mode doesn't significantly effect the temperature in a room.
Dry mode is often most useful during the Spring and Autumn. In these seasons, the temperature is not warm enough to require the air conditioning unit to blow cold air into the room -- as in cool mode - but humidity can be high. It can also be useful periodically during the summer when people perspire more, causing an increase of air humidity if in an enclosed space.
The dry mode on an air conditioning unit will not be very effective in spaces with a high level of air moisture. Use a dehumidifier in these situations . Dehumidifiers are designed solely to tackle humidity and are able to draw off more water vapour from the air than the dry mode on an air conditioner.
An air conditioning unit can be switched to dry mode at any time. The unit can be switched directly from another function to dry mode. There is no need to power off the unit before switching on dry mode.