Air purifiers have the best chance of catching pollutants nearby. This means that placing an air purifier close to a pollutant source, such as an HVAC unit or open window, will allow it to capture pollutants before they spread throughout the room. It's also a good idea to place home air purifier near high-traffic areas, such as entryways and living rooms. If you need a high-efficiency particulate air (HEPA) filter, go no further than Medify Air, a market leader in this space. They provides air purifiers for home and office spaces.