Indoor air too dry?

View of a cosy corner with a boho-style chest of drawers, chair and many plants.

For an optimal room climate, experts recommend a relative humidity of between 40 and 60 percent. For various reasons, humidity is often lower than this. The drier the air, the more particles it can contain.

To the solutions

Find out below what causes dry air in your home and what you can do about it. However, before we answer these questions, we want to clarify a general point:

What exactly do we mean by dry air?

Air humidity describes the proportion of water vapour in the air. In addition to nitrogen, oxygen, carbon dioxide and other gases, air also contains water vapour. A little-known fact is that the water vapour content depends partly on air pressure and temperature: The warmer the air, the more water vapour it can absorb. Conversely, cold air stores less water and is drier. So in winter the air is usually drier than in summer.

Cosy living room with alcove, candles and wood pile.

Dry heated air

If (underfloor) central heating in winter additionally heats up the already dry air, it doesn’t automatically pick up more moisture. Obviously, if no moisture is available in the room, the air can’t absorb any. This is what creates warm yet dry air in heated rooms. 

Air conditioning systems also dry out the air. 

Hot summer days can have the same effect, especially if you use an air conditioning unit. If you turn the air conditioning up high, you risk creating a real desert climate. If the air conditioning is set too cold, the indoor air loses moisture (as already explained, cold air is not able to absorb as much moisture as warm air). All this means humidity can quickly drop below the optimal value of 40-60%. 

View of an air conditioner and a picture of a chief's headdress.

Dry indoor air from ventilation systems

Ventilation systems save energy and guarantee a constant minimum exchange of air. This ensures the humidity is not too high. However, there’s a problem, especially in winter, because they can quickly dry out the air. If this happens, the first step is to switch the ventilation system to a lower setting. Here are some more tips for a better room climate.

3 ways of increasing humidity

Woman opens the curtains after getting up and looks out of the window.

1. Ventilate regularly 

Often small actions can have a big effect. For example, opening the windows several times a day. It lets stale air out and fresh air in. 

This is a great way to improve air quality, particularly in winter. The rule is: better to open windows wide for a short time (five to ten minutes) than to leave a small gap over a longer period. 

2. Pot plants

Pot plants are also a good way of improving the air in your rooms. Large-leafed plants such as Cyprus grass or ferns increase humidity. Some plants even filter out harmful airborne substances. They include ivy, spider plants and rubber plants. 

Living room in boho style with mint green couch and lots of plants.
Venta humidifier Original stands next to a dining table.

3. Humidifiers

Another, much less complicated way to achieve the perfect humidity is a humidifier. The appliance helps you achieve the ideal humidity of 40-60% all year round. For example, it moistens dry air caused by heating, air conditioning or ventilation systems.

It also reduces harmful airborne substances in a natural way for feel-good rooms in your home.

Venta Humidifiers

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LW15 Original Air Humidifier
  • For rooms up to 25 m² 
  • Optimal air humidity of 40 to 60 %
  • Indoor humidity of 40-60% naturally reduces harmful airborne substances 
  • Hygienic cold evaporation without humidifier mats or filters
  • Uses tap water 
For rooms up to 25 m² Optimal air humidity of 40 to 60 %Indoor humidity of 40-60% naturally reduces harmful airborne substances Hygienic cold evaporation without humidifier mats or filtersUses tap water 
Color
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LW25 Original Air Humidifier
  • For rooms up to 40 m² 
  • Optimal air humidity of 40 to 60 %
  • Indoor humidity of 40-60% naturally reduces harmful airborne substances 
  • Hygienic cold evaporation without humidifier mats or filters 
  • Uses tap water 
For rooms up to 40 m² Optimal air humidity of 40 to 60 % Indoor humidity of 40-60% naturally reduces harmful airborne substances Hygienic cold evaporation without humidifier mats or filters Uses tap water 
Color
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LW45 Original Air Humidifier
  • For rooms up to 55 m² 
  • Optimal air humidity of 40 to 60 %
  • Indoor humidity of 40-60% naturally reduces harmful airborne substances 
  • Hygienic cold evaporation without humidifier mats or filters
  • Uses tap water 
For rooms up to 55 m² Optimal air humidity of 40 to 60 % Indoor humidity of 40-60% naturally reduces harmful airborne substances Hygienic cold evaporation without humidifier mats or filtersUses tap water 
Color
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LW25 Comfort Plus Air Humidifier
  • For rooms up to 45 m² 
  • Interactive touch display
  • Optimal air humidity of 40 to 60 %
  • Indoor humidity of 40-60% naturally reduces harmful airborne substances 
  • Hygienic cold evaporation without humidifying mats or filters
  • Hygienic cold evaporation with innovative VentWave™ technology for increased evaporation performance. The design uses less material for a better eco-balance 
  • Uses tap water 
  • Digital hygrostat monitors and controls relative humidity 
For rooms up to 45 m² Interactive touch displayOptimal air humidity of 40 to 60 % Indoor humidity of 40-60% naturally reduces harmful airborne substances Hygienic cold evaporation without humidifying mats or filtersHygienic cold evaporation with innovative VentWave™ technology for increased evaporation performance. The design uses less material for a better eco-balance Uses tap water Digital hygrostat monitors and controls relative humidity 
Color
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LW45 Comfort Plus Air Humidifier
  • For rooms up to 60 m²
  • Interactive touch display
  • Optimal air humidity of 40 to 60 %
  • Indoor humidity of 40-60% naturally reduces harmful airborne substances
  • Hygienic cold evaporation without humidifying mats or filters
  • Hygienic cold evaporation with innovative VentWave™ technology for increased evaporation performance. The design uses less material for a better eco-balance 
  • Uses tap water 
  • Digital hygrostat monitors and controls relative humidity 
For rooms up to 60 m²Interactive touch displayOptimal air humidity of 40 to 60 % Indoor humidity of 40-60% naturally reduces harmful airborne substancesHygienic cold evaporation without humidifying mats or filtersHygienic cold evaporation with innovative VentWave™ technology for increased evaporation performance. The design uses less material for a better eco-balance Uses tap water Digital hygrostat monitors and controls relative humidity 
Color
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LW73 AeroStyle Air Humidifier
  • Room size up to 70 m² 
  • Optimal air humidity of 40 to 60 %
  • Indoor humidity of 40-60% naturally reduces harmful airborne substances
  • Hygienic cold evaporation without humidifying mats or filters 
  • Use with tap water without chemical additives 
  • Low-maintenance operation with special Venta hygiene disc
  • Digital hygrostat for monitoring and controlling the relative humidity
  • Interactive touch display
  • Pleasantly quiet operation
  • Optional remote control via app 
Room size up to 70 m² Optimal air humidity of 40 to 60 % Indoor humidity of 40-60% naturally reduces harmful airborne substancesHygienic cold evaporation without humidifying mats or filters Use with tap water without chemical additives Low-maintenance operation with special Venta hygiene discDigital hygrostat for monitoring and controlling the relative humidityInteractive touch displayPleasantly quiet operationOptional remote control via app 
Color
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 WiFi
LW73 WiFi AeroStyle Humidifier
  • Room size up to 70 m² 
  • Optimal air humidity of 40 to 60 %
  • Indoor humidity of 40-60% naturally reduces harmful airborne substances 
  • Hygienic cold evaporation without humidifying mats or filters 
  • Use with tap water without chemical additives 
  • Low-maintenance operation with special Venta hygiene disc
  • Digital hygrostat for monitoring and controlling the relative humidity
  • Interactive touch display
  • Pleasantly quiet operation
  • Remote control via app 
Room size up to 70 m² Optimal air humidity of 40 to 60 % Indoor humidity of 40-60% naturally reduces harmful airborne substances Hygienic cold evaporation without humidifying mats or filters Use with tap water without chemical additives Low-maintenance operation with special Venta hygiene discDigital hygrostat for monitoring and controlling the relative humidityInteractive touch displayPleasantly quiet operationRemote control via app 
Color
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LW74 AeroStyle Air Humidifier
  • Two fans and more power for rooms of up to 90 m²
  • Optimal air humidity of 40 to 60 %
  • Indoor humidity of 40-60% naturally reduces harmful airborne substances
  • Hygienic cold evaporation without humidifying mats or filters 
  • Use with tap water without chemical additives 
  • Low-maintenance operation with special Venta hygiene disc 
  • Digital hygrostat for monitoring and controlling the relative humidity 
  • Interactive touch display 
  • Pleasantly quiet operation
  • Optional remote control via app 
Two fans and more power for rooms of up to 90 m²Optimal air humidity of 40 to 60 % Indoor humidity of 40-60% naturally reduces harmful airborne substancesHygienic cold evaporation without humidifying mats or filters Use with tap water without chemical additives Low-maintenance operation with special Venta hygiene disc Digital hygrostat for monitoring and controlling the relative humidity Interactive touch display Pleasantly quiet operation Optional remote control via app 
Color
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 WiFi
AW902 Professional Air Humidifier
  • Room size up to 120 m² 
  • Highly efficient humidification using VentWave™ 3D technology 
  • Low-maintenance operation thanks to patented hygiene disk – without chemical additives 
  • Hygienic cold evaporation without humidifying mats or filters
  • Up to 99.9 % sterilisation thanks to UVC technology 
  • Convenient control with the Venta Home App 
  • Reduces pollen and house dust – important for people suffering from allergies 
Room size up to 120 m² Highly efficient humidification using VentWave™ 3D technology Low-maintenance operation thanks to patented hygiene disk – without chemical additives Hygienic cold evaporation without humidifying mats or filtersUp to 99.9 % sterilisation thanks to UVC technology Convenient control with the Venta Home App Reduces pollen and house dust – important for people suffering from allergies 
Color
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