You can save energy and money when ventilatinghouse instead of using air conditioning, except for the hottest days. The airmovementcan carry away the heat from house.This air blower creates cooling effects lead to your body is cooled. Cooling by ventilating usually associated with the shade of trees and the approach windows, roof reflectance (roof is made of light-colored), and roof insulation. The circulation of air can be created by natural ventilation to increase comfort or by air conditioner to save energy. Ventilation also has other advantages besides cooling. Air pollution tends to accumulate in the house if not well ventilated and when closed to use the air conditioner for cooling or heating. Thus ventilation fans are invented which saves energy and money. A friendly products needed in daily life