In this case, the house forms a momentary vacuum, which causes the intake of cold air from outside the building through leaks, chimneys, shafts, fireplace, etc. .
Katika kesi hii, nyumba hutengeneza utupu kitambo, ambayo husababisha ulaji wa hewa baridi kutoka nje ya jengo kupitia uvujaji, chimneys, shafts, fireplace, nk . .