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When shopping for an air purifier, consider carefully the size of the room you plan to use it in. A device too small won't be able to perform what it's been designed to do.
Another important bit to consider is the frequency of the filter replacements. Offerings with affordable price tags might become expensive to run long-term due to the need to replace HEPA filters frequently. On the other hand, higher-end models with higher prices might need less maintenance post-purchase.
Best Budget Buy
The GermGuardian AC4825 is an affordable and highly rated option whose HEPA filter can capture 99.97% of all dust and allergens. Thanks to a built-in carbon filter, the device can also combat unpleasant odors.
This air purifier is a solid option for small- and medium-sized rooms. Its filter lasts for about 6 to 8 months between replacements.
Best for Quiet Operation
The Series 1000 AC1214/40 air purifier by Philips is an elegant and feature-rich offering that's good for rooms up to 200 square feet in size. It can capture particles as small as 0.3 microns, and it shows the air quality of the room via a numeric display.
Best of all, the device is as quiet as a human whisper during operation. You can control the Wi-Fi-connected device via a smartphone app.
Handily the best air purifier on this list, the Airmega 400S can keep the air clean in up to a whopping 1,560 square feet of living space, so it's well worth its considerable price tag. The device has a built-in, real-time air-quality sensor, as well as a sophisticated dual-filter setup that allows it to keep both particles and odors at bay.
You can control the air purifier via a sleek smartphone app or Amazon Alexa. There are two color options to pick from — graphite and white.
Best for Ultra Compact Design
The GermGuardian AC4100 is a compact option with a built-in HEPA filter and a charcoal filter, which is essential for removing household and pet odors. A UV light is also part of the device's features.
Three operational speeds and removable HEPA filters that last between 6 and 8 months make the GermGuardian AC4100 a solid sub-$50 pick.
Best for Long-Lasting Filters
The high-end Sharp KC-860U air purifier can work quietly and effectively in spaces up to 347 square feet. The device has an air-humidifying option, as well as a HEPA filter that can last up to a whopping 5 years between changes. Its active carbon filter is washable, and it can also last up to 5 years. Overall, it's a solid option that makes up for its high price tag by offering low-maintenance costs.
Best for Space-Saving Design
The LG PuriCare Tower purifier will tell you about the air quality of the room you're in via color-coded LED lights. Sleek design, intuitive controls, and quiet operation are also among the device's key features.
The PuriCare Tower has been scientifically proven to help people with asthma and allergies breathe better. The device is good for rooms up to 217 square feet in size.
The Coway AP-1512HH is a highly rated compact air purifier that's available in two colors (black and white with gold accents). It features indicators for air quality and changing filters, and it can cover up to 326 feet of living space.
The filter of the Coway AP-1512HH can last up to a year (6 months if used for clearing odors). The air purifier is backed with a robust three-year warranty.
Best for Offering Heating and Cooling Capabilities
Like all things Dyson, the Pure Hot+Cool Link air purifier is as stylish as it is rich in available features. The futuristic-looking device will not only clean the air in your home from allergens and pollutants via a powerful HEPA filter, but it'll also heat and cool it when you desire.
The air purifier has Wi-Fi connectivity, so you can control it via your smartphone. The device is also compatible with Amazon Alexa.
Best for a Slim Profile
The range-topping Lasko Pure Platinum air purifier has a slim profile and a three-stage filtration system. The latter includes a UV light for removing allergens and bacteria, a carbon filter, and a HEPA-style filter.
A built-in air-quality sensor can automatically turn on the air purifier when necessary, or control its operation speed. The device comes with a 1-year supply of filters.
Best Affordable Option for Larger Rooms
The AeraMax 290 by Fellowes is a solid option that's suited for medium to large rooms (up to 600 square feet). A certified asthma- and allergy-friendly product, it even has a dedicated mode for cold and flu season.
The device's HEPA filter can last up to a year between replacements. Fellowes backs the air purifier with an excellent 3-year warranty.