Moist indoor air is automatically exchanged for dry outside air.

With this exchange, the surface of the walls in cellars and other rooms becomes permanently and sustainably dry again.

  • Precision dew point sensors determine optimal ventilation conditions.
  • The MKL dew point ventilation control 100-720 only vents the rooms if the outside air is able to absorb and transport moisture.

The problem of condensation

According to statistics, there are 2 million houses in the Federal Republic of Germany with sometimes considerable problems with moisture in basements and basement rooms. Ventilation is often done wrong, so that in addition to the already existing moisture in the masonry, there is also condensation moisture. The walls suck themselves with the condensation moisture fully and large-scale mold formation is then only a matter of time. Here, automatic ventilation provides a lasting remedy. If the moist air is replaced by dry air in a room, a slow drying takes place on the inner wall surface. Actually, one should only ventilate when the outside air is cooler. Cool air contains little water vapor, so the absolute humidity is lower. If this is only slightly heated by the basement room, which is done with automatic ventilation, this mixed air can absorb moisture again.


The solution: Intelligent, automatic shock ventilation

The optimal ventilation conditions are only determined by the use of precision dew point sensors. This means that the humid basement or room air can be exchanged with dry air in a controlled manner throughout the year. The intelligent MKL dew point ventilation control 100-720 only vents the rooms if the outside air is able to absorb and transport moisture at all. If the dew point temperature is lower than the dew point temperature in the basement, venting. The dew point temperature is the measure of absolute humidity in the air. The lower this dew point temperature, the more water vapour it can absorb and is measured and evaluated by the ventilation control. In addition, the internal temperature can be adjusted so that the internal temperature does not lower too far in a cold winter. Depending on the room size and ventilation requirements, you can choose between nine different ventilation intervals. On the front panel, three buttons are accessible with which the program interval can be selected, as well as to currently display the current data such as temperature, relative humidity and the dew point temperature of both dew point sensors. Included in the scope of delivery: control ready for connection, two sensors with 10 meters of cable each and detailed description.

MKL dew point ventilation control
Beer glass with dew drops

Simply explained by the example at the dew point of a beer glass

You know this: a beer glass fogs when the surrounding warm and humid air hits the cool glass. The moisture from the air is reflected as condensation on the glass. This also happens when warm, humid air, e.g. through tilted windows into your basement and is reflected on the cooler walls. The basement wall then sucks up with considerable amounts of water over time. The dew point is reached when the warm, humid air is cooled to such an extent that condensation moisture can form and decomplace. Therefore, the dew point is also to be regarded as a direct measure of the humidity in the air. Therefore, we measure the water content in the air in the basement and also outside the house in our control system. The control system only ventilates when the outside air has a much lower water content than the indoor air. With the dry outside air, the surface of your basement walls is slowly and permanently dried again.

Please download the PDFs on the topic of MKL dew point ventilation control here.

Technical data sheet