The best budget air purifiers for every room size: Consumer Reports

Air purifiers remove dust, pollen, smoke, and other airborne particles that degrade indoor air quality and aggravate respiratory conditions. Many of the highest-rated models carry price tags well above $350, but the cost of effective filtration does not have to be that high. Performance at both high and low fan speeds varies widely across price points, and a lower-cost model can match or beat a more expensive one in lab tests.

Consumer Reports has tested more than 180 air purifiers on filtration effectiveness, noise, and ease of use to find the best budget options under $350 for every room size. Here are the 11 that made the cut.

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At $200, this model is one of the top-performing air purifiers for small rooms of 150 square feet or less. Dust, smoke, and pollen removal is outstanding whether the fan runs at high or low speed. Consumer Reports' testers praise its quiet lower-speed performance and note that a programmable timer, five fan speeds, and an auto mode are all included. Annual operating costs run an estimated $144 per year, and CR member surveys show only moderate owner satisfaction with GermGuardian purifiers.

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The $200 Blueair Mini Restful is rated for small rooms and earns high marks for removing dust, pollen, and smoke at high speeds, with nearly as strong results at lower settings. A certified HEPA filter is built in, though no activated carbon filter is included. Consumer Reports notes that the purifier doubles as an alarm clock and a sunrise light, making it well suited to nightstands and bedrooms. Annual operating costs are low at $52, and CR member surveys show excellent predicted reliability and owner satisfaction for Blueair air purifiers.

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The Lasko LP200 costs $81 and earns the highest filtration score in its class, with top marks for dust, pollen, and smoke removal at its maximum setting and nearly equivalent results when dialed down. Consumer Reports describes the unit as easy to operate and relatively quiet, particularly at lower speeds. Annual operating costs run about $67. No app connectivity or remote control is included, and CR member surveys rate owner satisfaction with Lasko purifiers as only so-so.

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The $249 Honeywell $HON AirGenius 5 HFD-320 is one of Consumer Reports' top-rated units for medium rooms up to 350 square feet. Performance at its higher speed setting is strong across dust, pollen, and smoke, and near-top results hold even at lower speeds. Consumer Reports says the model keeps noise to a minimum, with filter replacements at $40 per year and energy costs around $48 annually. No WiFi, app, or remote control is included, and CR member surveys rate Honeywell purifiers as very reliable but only so-so for owner satisfaction.

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The Blueair Blue Pure 511i Max retails for $125 and is rated for medium rooms of 150 to 350 square feet. Four fan speeds, an auto mode that shifts to a higher gear when air quality drops, and a filter replacement reminder are included. Consumer Reports rates its dust, pollen, and smoke removal at the highest speed as near-top-level, though the model is not whisper-quiet while running. Annual costs are $75, and CR member surveys reflect very high owner satisfaction and very few reliability issues for Blueair purifiers.

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According to Consumer Reports, the GermGuardian AC5900WCA at $219.99 is a solid option for medium rooms. Performance on dust, pollen, and smoke removal at high speed is very good, though the model produces noticeable noise. CR says easy-to-use controls, a programmable timer, and a carrying handle are included, while app connectivity and a remote control are not. Filter replacement costs are high at $195 per year, and CR member surveys show only moderate owner satisfaction with GermGuardian purifiers.

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For large rooms of 350 to 650 square feet, the Blueair Blue Pure 311i+ Max costs $300. Consumer Reports calls its high-speed filtration of dust, pollen, and smoke terrific, with near-top-level results even at lower settings. A washable prefilter, a certified HEPA filter, and an activated carbon filter for odor control are all included, and the model weighs just eight pounds for easy room-to-room portability. Annual maintenance costs run about $135, and Blueair purifiers earn high reliability marks and very high owner satisfaction in CR member surveys.

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Consumer Reports rates the $340 Blueair Blue Pure 211+ Auto among the best for large-room filtration on dust, pollen, and smoke at high speed. Performance at lower speeds is less impressive, and no WiFi or app connectivity is available. The unit can be relatively loud at higher settings, and filter replacements cost up to $140 per year. CR member surveys show very high satisfaction with Blueair purifiers and impressive reliability.

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At $270, the Winix 9800 clears dust, pollen, and smoke at all speeds, with the strongest results at high. Consumer Reports notes some noise at the maximum setting but rates its filtration performance highly across speed levels. The 19-pound unit uses a HEPA filter and an activated carbon filter, includes a filter indicator and four speed settings, and connects to an app. CR reports the biggest drawback is the annual operating cost of $164.

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The Coway Airmega 450 carries a retail price of $499 and is one of the most budget-friendly options in Consumer Reports' ratings for extra-large rooms of 650 square feet or more. Dust, pollen, and smoke removal at the highest setting is effective, and CR says performance improves in smaller spaces. Auto mode, a filter-life indicator, app control, and a remote control are included, though no carrying handle is available and the unit weighs 26 pounds. Annual maintenance runs about $132, and CR member surveys find Coway purifiers highly reliable and owners very satisfied.

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Coway's Airmega 350 sells for $339 and is a lower-cost option for extra-large rooms. Consumer Reports says its performance at the highest setting is fairly effective at removing particulate matter, though not at the level of top-rated models. Quiet operation holds at any speed, and the $103 estimated annual operating cost is on the low end for the category. A filter-life indicator and an auto mode are included, and CR member surveys rate Coway purifiers as highly reliable, with owners reporting very high satisfaction.