air the house in winter
Why a tilted window all day both cools and humidifies, and why three minutes fully open works better.
Updated 2026-09-01 · 6 min read
In winter you need air change, not a crack for eight hours. Moist air from laundry and showers has to leave; walls should not cool to dew point.
Usually not: it chills reveals and glass and changes little air. Short, full openings work better.
en
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10–25 €
Without a relative-humidity number, every tip is guesswork. A €10–25 hygrometer is the first useful purchase — before any dehumidifier.
When: Always, as the first diagnostic step.
Not when: It does not replace a moisture meter or a rising-damp survey.
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CIBSE Guide A — Environmental design
Intervalli di comfort di umidità relativa per ambienti abitati, usati come riferimento di progetto, non come obbligo di legge.
Accessed 2026-09-01
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