The Philips HU4801 / 01 humidifier operates similarly to my Luftwäscher office. The air is guided past the internal sponge and thus enriched with moisture. The air is then blown gently outwards and with a pleasantly low sound level. At night you can put the device on a lower power and reduce the noise again.
The room where the Philips HU4801 / 01 humidifier stands is approximately 16m². The humidity has reached heating air just under 40%. With the humidifier, the humidity rises to just under 60%. The indoor climate has improved thereby. The mucous membranes in the nose are no longer so very irritated. My hygrometer indicates to me that the humidity in the whole room is uniform and varies only slightly in the greatest distance from the humidifier. This created not my ultrasonic vaporizer.
With two liters of water you can sleep all night with optimum indoor air. I use self-osmosis filtered water, which has no more ingredients in it, so also no lime. The filter should thereby keep very long.
Operation of the device is very simple. On and off, and the two blower strengths are selectable. The filling of the water is quick and uncomplicated. The display of the water level is very helpful. The automatic shutdown of the unit if the water is empty, makes sense.
Visually, the Philips HU4801 / 01 ok .. It fits visually with its pastel green cap well in nursery. I like the Philips HU4801 / 01 humidifier and I recommend him gladly.