10
Jun
As houses and apartments get more energy efficient, they also get more airtight, limiting air exchange with the outside world. That’s partly why it’s widely accepted that indoor air is often far more polluted than outdoor air. Mucking up our indoor air are factors like synthetic building materials, cleaning products, pet dander, cooking emissions and smoke. Opening windows can lower the levels of most pollutants, but bad weather, wildfires and high pollen-count days mean you can’t always do so. That’s where air purifiers can help. They use a combination of specialized filters, fans and sensors to suck in particulate matter,…