All in all, very economical ... and the turbo mode is not bad either. However, I notice little difference ... maybe the air quality was better than expected with me ... or if the unit does not notice. It runs mostly at lower level .... and the dust settles still everywhere from.
Unfortunately, it consumes 1.5 watts when off constantly ... I'm unclear why ... but that does not make sense when it is turned on and consumed on the lowest level 5Watt - because someone has not paid at the circuit to save power.
Schade Schade.