Membrane air dryers, refers to a dehumidification membrane which provides exclusive and efficient way to cut various contaminants from compressed air system. Owing to this, membrane air dryers are considered as an advanced system of filtration media which is intended to work with existing compressed air system. These membrane air dryers requires no electricity as well as are reliable and reasonable to use. It can be operated continuously (24 hours per day and seven days per week). With proper maintenance and installation, it will be lasting for long years. Increasing demand from various end use industries such as food & beverage, medical, industrial, telecommunication, among many others, the demand for membrane air dryers is rapidly growing. Membrane air dryer's technology is anticipated to evolve in the future, as membrane air dryer provides ultra clean and dry air, also it is projected to replace refrigerated air dryers.