This is awesome. I suffer from damp and mold in my flat, I also suffer from alergies. This device made an emmediate difference, and its collected a litre of moisture in 5 days.
I dont think the little versions (500 ml) are so effective, Ive tried smaller ones which did not make a difference so I would recommend this device to anyone who suffers from damp properties, and especially if you are plagued by allergies as well.
It is not very noisy but louder than an old one I had. It is slim and neat but would not class as compact. Saying that I would recommend this as it is very effective hence the 5 stars.