NEWS RELEASE                                                                                                    FEBRUARY 2014

Indoor Air Filter Revenues Will Exceed $7.1 Billion In 2015

Driven by the rapidly growing Asian market, the sales of air filters to purify indoor air will exceed $7.1 billion in 2015. This is the latest prediction by the McIlvaine Company in Air Filtration and Purification World Market.

The recent ambient air problems in China have accelerated sales of filtration equipment to protect residents and office workers. The growth of the Asian power, semiconductor and pharmaceutical industries as well as the very substantial office and commercial building construction are also contributing to the market growth.

($ Millions)










 G 1-4


 Gas Phase


 H 10-17


 M 5-6, F 7-9


Filter types have been segmented in the forecast. The electronic segment includes low voltage electrostatic precipitators which are incorporated in the ductwork in residential and commercial buildings. It also includes room electronic treatment units involving air flow through the treatment device, but not the less expensive units which claim to purify the air at a distance.

The G 1-4 units are the low efficiency devices such as the spun glass furnace filters commonly used in residences.

The biggest segment of the market is medium efficiency classified as M 5-6 and F 7-9. These filters are widely used in commercial and industrial buildings and are commanding the largest market share in the residential sector as well.

The H 10-17 segment is high efficiency and includes the microfiberglass wet-laid media as well as newer synthetic films. These membranes are being used to provide ultraclean air within electronic devices as well as to purify the air in semiconductor and pharmaceutical manufacturing.

Technology is driving the market. For the inlet to gas turbines, a strong case is now being made to utilize high efficiency filters at four times the cost instead of medium efficiency filters. This switch will increase revenues by $300 million. The preference for medium efficiency filters in residences and commercial buildings as opposed to low efficiency, has added more than $1 billion to annual revenues.

The development of microfibers will further shape the industry. These fibers offer reduced pressure loss and energy consumption while providing high efficiency. Membranes are being improved as well. One of the most important developments is the incorporation of adsorption and catalytic mechanisms in the filter media. Adsorbents reduce odors and volatile organic compounds. Catalysts can convert pollutants to harmless compounds.

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