What Air Purifier should you buy? This was deliberate: It put the particle counter well outside the airflow path from the purifiers, to avoid an artificially high measure of their performance, and, instead, measured the air a typical adult would be breathing at standing height at the far end of a typical bedroom.

On pure air-cleaning performance, it outdid the Coway, reducing particulates by more than 99 percent on both high and quiet” (medium) settings in the New York test room thanks to its high airflow and a clever and effective electrostatic mechanism that improves its capture of fine particles.

For example, if you have new health problems after moving, remodeling, refurnishing, or a performing pesticide application, this could be an indicator of an indoor air quality problem. An important feature to look for when searching for your new air purifier is HEPA filters.

Ozone purifiers live true to their name and simply produce ozone (a molecule consisting of three oxygen atoms). HEPA technology is used in portable air purifiers as it removes common airborne allergens. Gas phase filters remove odors and non-particulate pollution such as cooking gas, gasses emitted from paint or building materials, and perfume.

Even though HEPA filters have a large number of pleats to maximize their surface area, they can fill up quickly if larger particles are not pre-filtered out. The tape is just helpful to keep it tidy so when you shut off your fan the filter doesn’t just flop off,” Erik Saganic, air resources specialist for Puget Sound Clean Air Agency, said.

However, Bionaire do not state how long it will take the unit to actually filter all of the air in that room. Air purifiers capture small particles in the air that are generally not visible to the naked eye by trapping them in a dense mat of fine fibers. When these particles pass through the machine a second time, the charge makes them stick to the filter fibers (similar to the way a staticky sock will stick to other fabric in the dryer). air filters