Air conditioning

full open window is best to quicky change air (but keep room temperatures) best at winter at 14 - 15:30 p.m


slightly open window is best to exchange room temperature but keep air (no ventilation) best at summer around 20 pm - 8 a.m.

explanation: gradualy reducing temperature outside is always synchronized with temeperature outside over night. 


happens when conditions change quickly


heat goes up so open window slightly on top at summer evening close at 9 am
no heat exchange at winter so open all windows at full around 15 for short period   
use ventilator with timer on electric switch
leave room when conditioning   




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