Question

Why Ventilators are must for a house even though there are windows. Explain?

Answer 1

Fresh air can enter into the house through windows but smoke and warm air rises up and would not go out through windows. Smoke from the kitchen rises up as it is warm and if there are no outlets like ventilators then the air will stay in and heat up the room and could cause suffocation and discomfort. So, ventilators are necessary in houses.