http://www.gharexpert.com/category/1446/Ventilation-0.aspx?CatID=1446Ventilation information at GharExpert.com. Fans used for bathroom ventilationhttp://www.gharexpert.com/articles/Ventilation-1741/Bathroom-Ventilation_0.aspx?PL=2&ArticleID=1741&CatID=1446Bathroom ventilation is very essential for good health and contents of the house. It is applied to get rid of heat, humidity and dust from home. For proper ventilation, windows and doors must be placed opposite each other.