8 Best Air Purifiers of 2024 - Good Housekeeping

Close to $1,000 is a lot to spend on an air purifier, especially if you need multiple units throughout the home. But Dyson has proven itself splurge-worthy in other product categories, from cordless vacuums to hair dryers, and that's what our experts found with its latest air purifier, the Dyson Humidify+Cool Formaldehyde.

Its unique catalytic filter combines with True HEPA filtration to vanquish contaminants down to .3 microns. It was one of the fastest models at reducing particulate matter in our test chamber. And beyond that, it even has humidifying and cooling capabilities to help keep spaces dry and comfortable too.

The Dyson also has one of the most sophisticated onboard air monitors we've seen on a purifier. It measures the presence of volatile organic compounds (VOCs), nitrogen dioxide and particulate matter and then relays the data, along with ambient temperature and humidity levels, to a sleek app. "The interface on the app is extremely intuitive and should give users a very clear picture of their home's indoor air quality," says Greenwald.

If you're willing to spend this much on an air purifier, operating costs might not be an issue. But we'd be remiss not to mention that at $80 a pop, the Dyson's replacement filter is up there with the most expensive. Plus there's the $30 cleaning kit you'll need to use a few times a year to keep the device running smoothly.

Last but not least, the air purifier is massive, standing 3 feet tall. If neither of those is a deal breaker for you, the Dyson Humidify+Cool Formaldehyde won't disappoint when it comes to optimizing your home's indoor air quality.