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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,…

Old-school vacuums left a lot to be desired, and cordless vacuum cleaners are here to right many of those wrongs. The latest models tend to be thinner, lighter and easy to maneuver around a home, and you don’t really have to sacrifice suction power anymore to get those benefits. Dyson isn’t your only option anymore either — like the robot vacuum space, there are dozens of cordless vacuums to choose from today. Variety is great, but it can also lead to decision fatigue and confusion. We at Engadget can help make that decision a bit easier. After testing a bunch…