Question

Let you want to buy a house in which there in which there are window but no ventilator ? If not, why not ?

Answer 1

I think I should buy this house with window but not with ventilator because window will pass pass air from one place to another and it can also useful when ventilation.

Answer 2

Answer:

A house having windows but no ventilators should not be bought. This is because warm air is lighter than cold air and therefore, it goes up. This warm air can go outside the house mostly through ventilators. If there are no ventilators, then the warm air cannot go outside easily.