Healthy Air – Why Indoor Humidity Matters
Indoor air is not neutral. It affects how we sleep, think, breathe – and how our homes and furniture age. On this page, you’ll learn why humidity is more than just a number – and how it connects to health, energy efficiency, 
wood, and building structures.
Not only people react sensitively to air that’s too dry or too humid. So do our surroundings – books, wooden floors, 
even wall insulation – they all suffer when the air is out of balance.
We show you how natural humidification creates a healthy, energy-saving indoor climate – for people, possessions, and property.
Why Indoor Humidity Matters
Dry air irritates mucous membranes, promotes infections, and causes dry skin and eyes.
Furniture, plants, musical instruments, and building materials also visibly suffer.
The ideal indoor humidity lies between 40–60% relative humidity (rH).
In winter, air heated to 22 °C can drop below 20% rH – critically dry.
Humidity: Helpful or Harmful?
Too much humidity can promote mold – especially in poorly ventilated spaces.
Too little humidity causes wood to crack and airways to dry out.
Even insulation loses effectiveness when it gets damp.
Fazit: Es geht nicht um „viel oder wenig“, sondern um stabil und ausgewogen (siehe auch hier)
Air Exchange Rate & Moisture Loss
Warm air holds a lot of moisture – and leaves the room when you air out or use ventilation systems
The higher the air exchange rate, the greater the loss of humidity.
Air exchange rate according to Necono’s experience:
Approximately 7× per day – this is the design basis for the performance of our 3D-Humidifiers.Standard in ventilation technology:
About 0.4 times per hour = 9.6× per day → this explains the strong drying effect.
Save Energy with the Right Humidity
Humid air feels warmer → you can lower your heating temperature.
Less heating energy needed thanks to a better sense of warmth at 45% rH instead of 25%
Fewer material tensions and less maintenance (for wood, varnish, electronics, etc.).
- Tip: Bring humidity to where it’s needed.
Ceiling areas are moisture traps with little benefit – higher temperature, but no comfort gain.
Health & Indoor Air
Studies show: susceptibility to infections increases at <30% relative humidity.
Children, seniors, and people with allergies benefit most from stable humidity levels.
With natural evaporation, no aerosol mist, no droplets, no additives – safe and natural humidification!
Where and Why Humidity Matters
The Human Body:
Our respiratory system is most affected by air humidity.
When we breathe, we lose moisture through our nose and mouth – it’s gone with every exhale. 
Mucous membranes only function properly when moist – they trap viruses and protect us from infections.
Even our eyes need moisture.
We don’t blink only when we’re surprised or charmed –
we do it to keep the cornea moist and resilient. 
Our skin also benefits from humidity.
It protects our joints and should stay elastic and supple.
And of course: moist skin looks smoother and more youthful – forever young.
Counteract unhealthy humidity levels!
Moisture from condensation, such as on windows, can be reduced by keeping curtains open or removing them entirely.
Furniture placed against cold walls (colder than 13 °C) should have a gap of 7–10 cm. This allows air circulation to dry the wall and prevent mould growth.
Insulate the wall and you gain twice – better comfort and energy efficiency.
Start humidifying at the latest when humidity drops below 40%!
The basis of our development:
The development of the 3D humidifiers was based on figures recommended in 1996 by the Swiss Lung League.
Our devices are designed for approx. ±50% indoor humidity and for a room size of 28 m².
On my pillow, 80 cm from the humidifier, I measure 60% RH; 2 metres away, it’s 46%!
This is not a fixed rule – it’s individual, which is why measuring is important!
