8 Best Air Purifiers of 2024 - Good Housekeeping

The MinusA2 from RabbitAir does a superb job of pulling a slew of pollutants from the air, thanks to its multiple levels of filtration. On top of that superb performance, it features a sleek, streamlined design. "It's the first unit we've had in the Lab for testing that can be mounted to the wall," explains Greenwald. "The unit installed easily in our tests, so it should save floor space in your home, especially compared with the largest standing models, which can get quite bulky."

The MinusA2's multi-stage filtration includes the all-important true HEPA filter, rated to capture 99% of particulates less than 0.1 microns in size. A pre-filter snags pet hair and other larger allergens, while its activated carbon filter to neutralize odors. RabbitAir is unique in that it also lets you choose a customizable filter based on the most prevalent pollutants in the home. If dander is your main trigger, the pet allergy filter is probably the best option. If you're allergic to mold spores, you might opt for the germ defense filter.

You're paying top dollar for the MinusA2, but in addition to the stellar performance, it is also living up to its ultra-quiet claim, especially in silent mode, when its fan is literally whisper-quiet; even on the highest "turbo" setting, the fan only gets up around 49 decibels, or as loud as a soft conversation.

Keep in mind that, like the Alen, the MinusA2 has an ionization setting. While we prefer purifiers without this mode, at least with the MinusA2 the process for turning it off is straightforward and there is an indicator light on the face of the unit that clearly indicates if it's in active ion mode.

Coverage area: 815 sq ft (recommended) | Filter type: Pre-filter, true HEPA, carbon-activated filter and custom pet filter | Dimensions: 7" x 21.4" x 20" | Weight: 19.4 lbs | Filter replacement cost: $105