Also, I've gained this device based on the reviews. The following situation: Living room with 40 square meters but ceiling height 4m, roof completely in wood. Stove, and central heating. Cast with transition. 260 m3. Since our Hygro had in the cold days (digital) no display, I decided for this device. After 4 days of continuous use is finally the Hygro to 22% rel. Increased humidity and by a further 2 days at 29-30%. This is probably the wood (including the floor) and to saturation, what I mean by "home remedies" could not reach before. We can now keep up with 3-4 hrs. Running time per day. The bubbling and the current built-in fan is not really disturbing, handling and also the construction were and are very simple. The only mistake on my part, because we have very hard water astonished me that on the limescale pad a solid layer of lime on 0,7-1,3cm really emerged. Cracked like a Leibnitzkeks touch when. The heating area had gotten more, here I had 3x descale with 2 hours. The film here was about 0,5-0,9cm after 5 days of continuous operation. So sure, if you live use softened water in the south!
I am convinced by the device after I have previously used immmer again ultrasound systems to no avail.
