Ventilation is actually a process through which fresh air is intentionally pushed inside a space and stale air is thrown out The ventilating process can be achieved naturally or mechanically The ventilators and Ac have been used since a long time to maintain a nice air flow inside a building or a house Fresh air helps to lower down the temperature of the house Ventilation is very essential pa…..More on Sanyo Air Conditioning

Source: ?What are ventilation and its use