Air Cleaners That Remove Ozone

Activated Charcoal

• Activated charcoal filters have been shown to reduce indoor ozone. These filters can be expensive to install and maintain, however, and the filters must be changed regularly to maintain their effectiveness.

Activated Carbon

• The EPA recommends removing the source of the pollutants and increasing ventilation with clean outdoor air to mitigate most indoor pollutants. However, ozone levels increase with increased ventilation because of its natural occurrence outdoors. Filtering outdoor air as it enters a building can remove volatile organic compounds like ozone. Several beds of granular activated carbon, or GAC, can reduce the amount of ozone. This is an expensive solution, usually used on commercial buildings. Experiments with thinner, less expensive filters show promise but still are useful for commercial buildings, not private residences.

Houseplants

• Researchers at Pennsylvania State University found that common houseplants are effective at mitigating ozone. Spider plants, snake plants and golden pathos all reduced ozone levels equally. Houseplants may be an effective solution to reducing air pollutants such as ozone in a cost-effective way.