Why are ventilators in houses provided at the top of the walls?

Answer 1

Then you can't recieve dust in the face.

Answer 2

Simply for ease in construction and unrestricted airflow. Cool air introduced at the top of the room will tend to sink, helping make the room temperature more uniform. But that works against warm air to heat the room. So if you want forced-air ventilation to do both heating and cooling, design the vents and ducts so they produce a uniform temperature without depending on convection. And by the way, so they also do it efficiently and silently and without annoying drafts. A two-story building can save on ducting by feeding downstairs from the top and upstairs from the bottom.

Answer 3

The air you breathe out is warm , damp and less dense than odinary air. it rises and escapes through the ventilators near the roof. It is replaced by the cool air that comes through doors and windows.

Answer 4

warm air rises and cool air drops. The ventilators, being installed high up on the walls will take away the warm air.

Answer 5

coz the Air we Exhale is warmer and it rises above naturally.Hence the ventilators are kept at the top of the walls.

Answer 6

we breathe out hot air. as a rule hot air rises and cool air drops. thus to maintain a healthy circulation of air the ventilators are made on top of windows..

Answer 7

cool air sinks and hot air rises... so the ceiling is the best spot 2 install a ventilator

Answer 8

its because as the gases we get by burning such as carbon mono-oxide are lighter than air ,so they rise up .thus to exaust those gases chimneys are on top of the roof

Answer 9

Because the air get low density after heating up, and raises above.....

Answer 10

They rid your home of the hot air.