Unfortunately, the appliance is plenty loud - in the evenings, one should not use if you have sensitive neighbors.
However, what is really not good two were structural defects in our device:
1. We have used it only occasionally, but the on / off switch was then broken after 5 years.
2. In order to repair the unit has been opened. Not two screws - It turned out that an electric component (capacitor / resistor) that actually with the 220 volts - was should be connected cable, not tightened properly. Since it was not exposed to mechanical stress, it should also not solve by itself; Overall, it gave the impression as if it had never really been tightened at the factory.
Otherwise, the inner workings of the device makes a very robust impression. But the weak switch makes almost the impression of an intended breaking point, and the lack of electrical connections seem questionable (although this need not be a general problem of the model, but simply was so in our sample).
The warranty period was over and the structural deficiency is probably hard to prove, but it remains a bad feeling and we would buy next time probably from another manufacturer.
