Finally, the carbon filter filters pollutants such as smoke, VOCs, and various odors. The H13 True HEPA filter is capable of targeting 99.9 percent of bacteria and viruses, and filters a minimum of 99.97 percent of air particles with a 0.3-micron size, such as pollen. A pre-filter focuses on filtering larger debris, such as lint and pet hair. This purifier relies on an H13 True HEPA filter, just one part of its three-stage filtration system. With its overall efficiency, quiet operation, feature-packed design, and smart home compatibility, the Levoit Cover 400S remains our top pick out of all the air purifiers we've tested. No alert when it's time to change the filter We tracked this data, in addition to the energy consumption of each purifier, and did the hard work to give you a full picture of the very best air purifiers for your home and individual needs. These models were evaluated on the same attributes, but our lab testing was much more sophisticated and included both PM 2.5 (particulate matter less than or equal to 2.5 microns) and VOC (volatile organic compounds) monitoring, so we could understand how much was in the air of our testing space at different spots and times throughout the process. Our most recent round of testing consisted of 10 new air purifier models, and we are currently testing more. You'll also want to stock up on replacement filters, or sign up for a brand's filter subscription service, to ensure long-lasting use of your chosen purifier-if your filter is not washable or reusable.Īfter our original round of testing in the lab, we sent 15 top models home with members of our team, who used them for six months in their homes to evaluate their long-term performance and impact on indoor air quality. To find the most effective product for you, you'll want to not only consider the size of the room you're putting the air purifier in, but also what contaminants the room may have in it. All include a filter, like a HEPA filter, activated carbon filter, or pre-filter these work to eliminate different kinds and sizes of contaminants, from pet hair to smoke. Additionally, some are equipped with smart features so you can remotely monitor them. The room size an air purifier can take on is typically measured in square feet. Some air purifiers are made for tackling contaminants in small rooms, while others can take on larger spaces, like living rooms or kitchens. During testing, we've also evaluated ease of setup, value, design, and features. Over the past year, we've tested a total of 66 air purifiers in The Lab, where we've used an air quality monitor to evaluate each model's effectiveness and a decibel meter to evaluate noise levels. Melissa Homer, Chief Cleaning Officer at MaidPro and member of The Spruce's Cleaning Review board, tells us the CADR-which quantifies how quickly an air purifier removes air contaminants in cubic feet per minute (CFM)-is an important spec to consider since it provides a closer look into how effective the appliance will actually be in your space: “an apples-to-apples comparison between machines that cut through the marketing smoke and mirrors to how well they really work.” While there are many features to consider when purchasing an air purifier, the appliance's functionality-backed by a CADR (Clean Air Delivery Rate) spec-is the most important.
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