Eventually I came up with the idea to buy a dehumidifier. The requirement: The 4qm large bathroom after showering (and thorough aeration) to bring in a reasonable time in approximately 55% humidity and keep this value in about.
The first attempt was a "mini dehumidifier" of another company, which is also available here on Amazon and uses a Peltier element instead of a compressor. This unit was a total letdown - the influence on the humidity in the room can not be measured and in the receiver even after 24 hours, only a few drops of water..
I was aware of the equipment from Trotec, but knew not only which model I should make up my mind. The excellent and friendly telephone support company recommended me then for this purpose the smallest model, the TTK 30 S.
And what can I say: The device is fully consistent with the expectations and works flawlessly. Already one or two hours after setting up the humidity fell below 55% for the first time and it no longer had a musty smell in our bathroom.
Since this smallest model of the Trotec dehumidifier does not have own humidistat for automatic operation depending on the humidity in the room, we operate the device at a hygrostat switch socket (FS20 HGS + FS20 ST-3 - there are both here on Amazon). The humidistat is set so that it turns on the dehumidifier when the humidity exceeds the value of 60% and back off if the value falls below 55%.
(Note: as I said very useful Hotline Trotec said that this hygrostatgesteuerte operation is possible in principle, in the worst case, the collector may overflow when it is already quite full and the switch socket the device shortly before or during automatic Enteisungsphase that approx. every 30 minutes is traversed from the grid -. In the usual continuous operation of the TTK 30 S on the other hand, off automatically when the tank is full -. Who wants to be sure, should install a drain hose that goes directly into the condensate etc. a Bodensyphon derived -. With us but not an issue since we empty the collecting tank regularly and at an early stage).
The device has an overall very solid processed impression. It can be placed space-saving in an unused corner of the room thanks to its compactness and the skillful leadership of the airflow - the air is sucked in at one of the long sides and blown up.
The volume in operation is a little louder than an older refrigerator - the device "mumbles" thus already clear to himself - but it is not uncommon loud. An operating directly in the bedroom is likely for most probably not come into consideration. In a separate room with a door between them but it is unlikely to interfere with sleep. We are two doors in between and we did not hear the device even with "ears pricked."
It's amazing how much water can be extracted from the above described, even quite moderate application of the air: After two days of 2l comprehensive collection container is full. - We do not dehumidify yes a dripping wet basement room, so I took this power already considerable. In a "really wet" room, the device creates according to instruction by the way about 12l / day.
A few more data in the above described insert (determined with an energy monitor from a hardware store). The device has now consumes about 5.5 kWh of electricity for a week and is for almost 4 hours per day run. The weekly electricity cost is so with us about 1 Euro. As the blown air from the unit is slightly warm, the heating costs in return are expected to decline slightly.
Overall, you dry, not moldy, but fresh smelling bathroom a very acceptable in our eyes cost / benefit ratio and an absolute buy recommendation for the Trotec TTK 30 S.
