Do Desiccant Dehumidifiers Produce Heat?

Due to the high humidity, a damp room will always feel colder, and its effect on skin temperature, so using a professional dehumidifier to remove moisture will effectively make the room "feel" warmer and more pleasant without actually increasing the room temperature itself.

Dehumidification technology can be divided into two types, one is called a rotary design, which uses a compressor similar to a refrigerator, and the other is a type that uses desiccant gel particles (similar to the packet you get in the package). The desiccant removes moisture from the air, and then extracts the moisture by heating the desiccant on a small heating element. There are more and more types of dehumidifiers on the market, include the common whirlpool dehumidifiers, pump dehumidifiers, and wall-mounted dehumidifiers, etc.

When calculating the actual cost of running a dehumidifier, many people start to consider other benefits of operating costs, such as the heat generated by the dehumidifier, and what effect it will have on room temperature?

Rotary compressor dehumidifiers dehumidify by passing the air through a cooling coil which condenses the moisture. This reduces humidity and makes the room more comfortable, but it does not remove the warm air returning to the room, so it has the effect of reducing humidity, but not heating. So if the dehumidifier you choose requires room heating, then you should not consider rotating dehumidifiers.

The best choice to dehumidify and increase the room temperature is desiccant dehumidifiers, because they have a built-in heating element to regenerate the desiccant gel. Scientific measurements have found that during normal operation, the air blown out of the dehumidifier is 7 to 12 degrees Celsius warmer than the ambient temperature of the room air drawn in. All the heat generated by the desiccant dehumidifier will be blown into the room by a powerful fan. It not only removes the moisture from the air but also heats it before returning to the room. After a few hours of normal use, this dehumidifier can effectively raise the room temperature. Therefore, a high-quality dehumidifier can not only eliminate moisture problems and reduce humidity but also create a very good and effective background heating source to the room, and  reducing the heating costs.

However, it is worth pointing out that during very cold periods, a dehumidifier alone may not be sufficient to keep a room warm enough to sit in for long periods, so a dehumidifier should not be considered the main or only source of heating for a particular room.

Another advantage of the desiccant dehumidifier is that it is quiet in operation, making which very suitable for bedrooms and other living spaces. Initially, it will run at full power for a few hours, removing approximately 5 liters of water. Then the humidity level will initially drop to the level selected on the 'hygrometer' and the dehumidifier will only run when it is above the humidity level selected on the control panel or when it reaches a comfortable level. Desiccant dehumidifiers consume more electricity than rotary dehumidifiers because they use smaller heating elements. However, most of these running costs are recovered and not wasted as the heat is returned to the room, raising the room temperature and reducing the energy input for other heating needs.