According to AHAM we can claim a room size up to 390 square feet. (approximately 20 x 19.5 foot room) or 36 square meters (approximately 6 by 6 meter room). This conforms to the AHAM CADR Certification Program criteria of an 80% reduction of airborne particulate contaminants in a room of up to 390 square feet.
The ATMOSPHERE™ Air Purifier is intended to be used only in residential and light commercial environments. An example of a light commercial environment would be an office or retail shop. It is not intended for use in industrial environments, factories or bars, because of the large room sizes and continuous source of contamination. Use in unintended environments will be considered a misuse of the product and could result in poor performance and short filter life.