Your air purifier is only as good as its filter, so staying on top of replacements is crucial. Most HEPA filters need replacing every 6-12 months, depending on usage and air quality in your home.

We have tested the Blueair Classic Pro CP7i, the first air purifier with High-Intensity Narrow Spectrum (HINS) lighting — a technology that removes viruses and bacteria using violet-blue light.

Vote for the best air purifier once per day until polls close on July 3 at noon ET. The 10 winners will be announced on July 10. Have questions? Read the official Readers' Choice rules.

Why Is That Model So Popular? The LEVOIT Core Mini-P air purifier is specifically designed for bedroom and home use for up to 257 square feet.Lightweight and portable at just 2.3 pounds, it is 6.5 ...

The Levoit Core 400S air purifier is on sale at Amazon—quiet, powerful HEPA filtration for wildfire smoke, pollen, and pet dander. Great for medium-sized rooms.

Dyson's air purifier, available at Costco, offers real-time air quality monitoring over 111 square feet, featuring intelligent modes, remote control, and app connectivity for personalized air ...

Or if you don't want to go with Dyson as a brand, Amazon also has its own air quality monitor that works with Alexa. It doesn't double up as a cooling fan, but it's much cheaper at £69.99 ...

You want a powerful air purifier: The Blueair Blue Pure 211+ Auto beat the competition, scoring an average CADR of 360 across dust, smoke and pollen — the highest rating of those tested.

The Levoit VeSync Core 300S is the best air purifier you can buy if you're on a budget. Although its very affordable, it's far from basic. Our reviewer was impressed by its wide range of smart ...

This is the best air purifier for your animal-loving home thanks to several carefully thought-out, pet-friendly functions. The Levoit Vital 200S's U-shaped air inlet is designed to capture pet fur ...