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I live in Germany, and here the houses generally don't have machine ventilation so one has to air manually and regularly. As an example: earlier today I closed
by snmx999 4y ago
I live in Germany, and here the houses generally don't have machine ventilation so one has to air manually and regularly. As an example: earlier today I closed the door to my office (ca. 18 m2 / 194 sqft). The window was closed. After 2 hours the CO2 levels rose from 935 ppm to 1966 ppm. Letting air in for 20 minutes reduced the CO2 levels to 869 ppm.
- koheripbal 4y agoThe trick is to have two windows open so there is a pressure gradient that creates circulation with the air outside. You can get it down to 400ppm even with people in the apt.