5 ways to improve the air you breathe

1. Coway AP-1512HH ($185)

Coway's efficient machine "outperforms purifiers that cost far more," and it's among the cheapest to operate because the filters last so long. Though it's rated for spaces up to only 350 square feet, it does well in rooms twice that large. Buy it at Amazon.

2. Dyson Pure Cool Link ($350)

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Dyson's sleek air purifier doubles as a powerful tower fan. Its HEPA filter removes 99.97 percent of allergens and pollutants, and its carbon filter captures foul odors and potentially harmful household gases such as paint fumes. Buy it at Amazon.

3. GermGuardian AC4825 3-in-1 ($75)

In addition to HEPA and carbon filters, GermGuardians use a combination of UV light and titanium dioxide to help kill airborne bacteria, viruses, and mold spores. For a more portable option, check out the AC4100. Buy it at Amazon.

4. Blueair Blue Pure 211+ ($250)

Consumer Reports' favorite air purifier can be a little noisy at lower speeds, but it excels at removing dust, smoke, and pollen from rooms up to 600 square feet. Its three-part filtration system includes a washable pre-filter for catching pet hair and dust. Buy it at Amazon.

5. Airocide APS-200 ($550)

You don't need a big, ugly appliance to enjoy a breath of fresh air. The "Lamborghini of air purifiers" is a beautifully designed device that uses NASA technology to eliminate the need for filters. Simply replace the "reaction chamber" once a year. Buy it at Amazon.

Editor's note: Every week The Week's editors survey product reviews and articles in websites, newspapers, and magazines, to find cool and useful new items we think you'll like. We're now making it easier to purchase these selections through affiliate partnerships with certain retailers. The Week may get a share of the revenue from these purchases.