Delivers what it promises 73

The technsichen properties of the device are probably self-explanatory. My subjective impression NAC hein few weeks test:
+ Stable and resistant
+ Not silent, but so quietly that you can use it in the office
+ Short distance enough power for sufficient cooling even on very hot days
+ Doing very favorable

- A deduction of points for various small Verbesserungsüwrdigkeiten: switch is on the back and when the machine is running, you have almost forcibly get into the rotor blades (but this does nothing for the small Stoffflügelchen), there is only a tiny difference between level 1 and 2 , etc.

There are probably better equipment, me making it, however, very good service at a very low price, so buy recommendation.