Condensation dehumidifiers - frequently asked questions


The most frequently asked questions concerning condensation dryers offered by Master Climate Solutions.

How do I dry?

The best way to remove excess water from the air is to use an air dryer. Detailed information about the different methods of drying can be found here methods of drying.


What are dehumidifiers used for?

Dehumidifiers are used to decrease the amount of water in the air and thus dry the objects surrounded by the air. Detailed information about the operation of the dryers can be found here operating principles of condensation dehumidifiers.


How long does drying take?

The drying time depends on numerous factors, the most important being air temperature and humidity, cubic capacity of the room, dehumidifier's efficiency and humidity gains. All of them make the drying time hard to estimate. Drying may take anywhere from several hours to a couple of days.


What to do to make drying the most efficient?

Drying efficiency may be increased by placing it in the centre of the room. The processed air should be able to freely circulate around the room. More information about proper operation can be found here operation of compressor-based dehumidifiers.


Will the dehumidifier switch off automatically once required parameters are reached?

A dehumidifier equipped with a hygrostat will automatically switch off when a pre-defined humidity is reached. You should wait a while, though, as humidity gains may increase air humidity again. If this is the case, the hygrostat will switch the dryer back on.


What is a hygrostat?

A hygrostat is an automated element which controls the dehumidifier. It turns the device off when the air humidity reaches a pre-defined value.


Why does the dehumidifier condense so little?

The efficiency of a condensation dehumidifier depends on the parameters of the air it processes. A drop in temperature lowers the efficiency of the device's cooling system. That results in smaller quantities of condensed water. Efficiency can also be affected by a soiled air filter or heat exchanger. Observing the user’s manual is also important.


How to choose the best dehumidifier?

The best, albeit the most complicated way to choose a dehumidifier is to calculate humidity gains, which allows for determining the required dryer efficiency. A dehumidifier can also be chosen based on the graphs presenting the characteristics of the dehumidifier’s operation. If you know the temperature and humidity of the air in the room the dryer will be used in, you can more easily choose the right efficiency. Other methods of choosing a dehumidifiers are described here how to choose a dehumidifier.


Can I dry the air in several rooms at the same time?

Drying several rooms at the same time is possible, but drying them one by one is far better and quicker.


Where should I place my dehumidifier?

The best place to put the dryer is the centre of the room.


Can I ventilate the room I am drying?

Condensation dehumidifiers should be used in closed rooms, so you can’t ventilate the room when the device is running.


Can I heat the room I am drying?

The room being dried can be heated. You should not, however, exceed the dehumidifier’s operating temperature range. You should also pay attention not to direct the heat source at the dryer and to place it at a distance from the dryer.


Does the dehumidifier change the temperature in the room?

Condensation dehumidifiers increase the temperature in the room they are operating in. This depends on the temperature and the cubic capacity of the room. The air blown by the dehumidifier may be 3-8°C warmer.


Can the water in the condensate tank overflow?

The dehumidifiers are equipped with systems that switch them off the tank is full. This prevents them from overflowing.


How often does the condensate tank have to be emptied?

The dehumidifier alerts you when the tank has to be emptied.


What will happen if I choose a dehumidifier with insufficient efficiency?

Using an insufficiently powerful device will significantly increase the time and cost of drying. It can also prevent you from reaching the levels of less than 50% of relative humidity.


What will happen if I choose a dehumidifier with excessive efficiency?

Choosing an excessively powerful device can cause unwanted increase in purchase costs and unused potential of the dryer. However, buying a larger device will give you a safety margin and allow you to use it in bigger rooms.


What is an optimal humidity range in inhabited places?

It is assumed, that a relative humidity range giving climate comfort lies between 30 and 65%. The most optimal range is 40 to 50%.