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Is Your Indoor Humidity Level Healthy?

Check if your indoor humidity is in the healthy range. See humidifier or dehumidifier recommendations.

📅 Updated April 2026 Formula verified 📖 4 min read 🆓 Free · No sign-up

Ideale Werte

Innenraum: 40-60%. Unter 30%: trockene Schleimhaeute, Erkaeltungsrisiko. Ueber 60%: Schimmelgefahr. In deutschen Altbauten: Schimmel durch unzureichende Lueftung ist ein Dauerthema.

Stossluften

3-5× taeglich 5-10 Min Fenster weit oeffnen. Effektiver als Kipplueftung (die fast nichts bringt und Energie verschwendet). Hygrometer (10-20 €) zur Kontrolle.

Frequently asked questions
Ideale Luftfeuchtigkeit?
40-60%. Unter 30%: zu trocken. Ueber 60%: Schimmelrisiko.
Wie lueften?
Stossluften: 5-10 Min, Fenster weit auf, 3-5× taeglich. Kipplueftung bringt fast nichts.
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Kevin Glover
Founder, CalcWolf · GLVTS · Blickr
All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →
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