Local
Measurements and plans are stored only on this device.
WentylujTo · PL/EN · PWA
Check moisture, condensation and air exchange.
Combine temperature, humidity, a cold surface and CO₂. Get a clear result without an account or sending your data.
Quick result
Building physics
Results combine dew point, surface humidity and air exchange.
Return use
The diary shows trends and the plan supports regular actions.
Key tools
From a quick assessment to a local diary and plan.
Quick room assessment
Combine temperature, humidity, a cold surface and CO₂ into one clear result.
Dew point calculator
Calculate the temperature at which water vapour begins to condense.
Condensation risk
Check the margin between surface temperature and dew point.
Mould risk indicator
Assess humidity at a cold surface and how long the conditions persist.
Absolute humidity
Compare the actual amount of water vapour independently of temperature.
Airing effect
Estimate humidity after replacing part of the air and reheating it.