Indoor air pollution is a complex issue involving a wide variety of contaminants that threaten human health. In this context, more efforts should be made to improve air quality in confined spaces. Plants, among the most innovative and sustainable ‘technologies’, have been tested over and over again to verify their ability to reduce contaminants. The first studies date back to 1989 when NASA began monitoring the atmosphere inside spacecraft. In this thesis, with the aim of designing a new air purifier that exploits phytoremediation, potted plants and fan assisted plants were tested in a controlled laboratory environment; monitoring three categories of pollutants, such as: particulate matter, volatile organic compounds and nitrogen oxides.