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Because, in general, the basic principle of cold evaporation is widely acknowledged as the best method of air humidification compared with the two other methods of vaporization and nebulization.

Because the Venta system not only humidifies indoor air, but washes and purifies it as well. This is not possible with vaporizing or nebulizing appliances.

a). Though vaporizers are very hygienic, they can form scale, causing the machines to "fur up" very rapidly. There is also the danger of scalding in the event that the appliance tips over. In addition, these units can, depending on the model, use up to 20 times as much power as appliances that operate by evaporation.

b). Ultrasonic and misting appliances require cartridges to avoid white dust. These cartridges are expensive and changing them can be troublesome. Only by changing the cartridges regularly, can the user avoid the problem of releasing lime into the room with the water particles.

The Venta cold evaporation system ensures hygienic long-term operation without filterpads.

Dry indoor air is drawn in and passed through stacks of disks rotating in water. Dirt and dust particles adhere to the disk stacks and are collected in the lower housing. Only pure water evaporates.

The Venta-Airwasher offers an extremely large surface area for water to evaporate- up to 45 sq. ft. This is achieved in a surprisingly small amount of space, in which two sets of disk stacks rotate slowly in water.