The optimal relative humidity is 40% – 60%. This is also recommended by doctors.

Air at the right an ideal humidity improves your well-being, day and night.

Prevents dry skin, scratchy throats and red eyes.

Strengthens the immune system and reduces the risk of allergies.

Decreases flu viruses and pollen in the air.

Creates a good climate for animals, plants, wood furniture and musical instruments.

Less dust and particles in the air.

Indoor air becomes drier through opening a window because cold outdoor air cannot absorb much moisture, even though it shows high relative humidity. The colder the air, the less humidity it carries (that is why it is relative humidity).

Air circulation has an important influence on the reading of your hygrometer. Also, hygrometers have a tolerance of +/- 5%

That depends on the room size (qf), the technology you prefer (cold evaporator, ultrasonic visible moisture, air washer).

Both devices can help but won't provide 100% protection against the virus. The humidifier creates an optimal indoor climate in which viruses find it much harder to survive. Air purifiers can remove some viruses from the air using a HEPA or electrostatic filter. However a conventional domestic air purifier won’t be able to completely eliminate all viruses from a room. In addition, viruses can survive in a filter for a long period of time. That is why it is very important for filters to be replaced and cleaned regularly.

Humidity is the proportion of water vapour in the air. The relative humidity provides information on the saturation of the air with water vapour in the form of a percentage – always as a function of the temperature. That means: if the relative humidity is 100%, the air is completely saturated and if it is 50%, it is half-saturated with water vapour. You can measure the relative humidity using a hygrometer.

According to the World Health Organization (WHO), the air indoors is 2 to 5 times more polluted than the air outdoors. The level of pollution has a direct effect on air quality: the higher the level, the poorer the quality. Pollutants such as fine dust, animal hair, pollen, viruses, bacteria, mould spores and smoke can contaminate the air.

A humidifier ensures optimal humidity in the air by adding water to it, i.e. humidifying the air. There are various systems: evaporators, vaporisers and ultrasonic nebulisers. An air purifier reduces the air pollution indoors. Particles such as fine dust, pollen and viruses as well as unpleasant odours will be removed from the air. There are various systems for these too (HEPA filters or devices with an electrostatic filter). The air purifier does not affect the humidity in the air. The air washer is a 2-in-1 device that washes pollutants from the air and humidifies the air at the same time when it is too dry.

1 year manufacturers warranty

Yes, all Stadler Form products which come with a remote can be operated without remote. If you lost it, you can order a new one with our customer service (

Using distilled or reverse osmosis can be used to prevent mineral discharge with your humidifier and would not require a filter. This will still leave behind a biofilm and will still require regularly scheduled maintenanceAlthough a water softener removes most minerals (ion exchanger), sodium ions are added to it at the same time. The descaler cartridge is unable to filter these sodium ions, and they leave behind a white dust. 

First, check if your water tank is empty. Did your humidifier reach the desired humidity level? Try "continuous" on your dial - mist should come out.

Please make sure to clean your humidifier regularly (see instruction manual). Water sitting in the tank for too long without movement can also cause a smell.