The 8 Best Personal Air Purifiers

Sized for a nightstand or a desk corner, the Levoit Core Mini-P sips power and cleans the air around you rather than a whole bedroom. Housefresh found it right for a small office, an RV or a van. The filter pairs a pre-filter with a fine-particle layer and a carbon layer, and replacements are cheap. Levoit backs it for two years. There's no air-quality sensor, auto mode or app, and it's louder on its lowest speed than the box suggests.

Cleaning a whole bedroom or home office, not just a desk zone, calls for something like the Levoit Core 300-P. Its clean-air ratings are verified by an independent program, and Tom's Guide's measurements landed close to them. That's enough to change the air in a mid-size bedroom almost five times an hour. Levoit sells filters for pets, smoke and odors, and the warranty runs two years. There's no air-quality sensor or auto mode, so you pick the speed yourself.

A bedroom or nursery where noise and convenience matter most suits the Blueair Blue Pure 511i Max. Built-in sensors raise the fan when the air gets dirty, and the app shows air quality, sets schedules and flags filter changes, with Alexa and Google voice control too. It stays quiet on higher speeds, though it moves less air than bigger units. A washable fabric pre-filter wraps around it. Replacement filters are pricey.

Instead of a room, the IQAir Atem Desk cleans the air in front of one person. It sits on a desk stand and aims filtered air at your face, and a proximity sensor tells it when someone is there. IQAir rates its filter for particles far smaller than standard tests cover, and one filter lasts about a year. Airflow is tiny, so it helps only while you stay put, and the price is high.

Cordless and light, the Pure Enrichment PureZone Mini charges over USB-C and, the maker says, runs up to 12 hours on low, so it works on a hotel nightstand, a desk or in a car. A carbon pre-filter and a fine-particle layer twist off as one for replacement, and a removable handle lets it stand or lie flat. The airflow is very small, so it cleans only your breathing zone. The five-year warranty is long.

Room-size output and a real air-quality sensor come in a low-priced cylinder with the Dreo 338. Its verified clean-air rating suits a moderate bedroom, and a fine-dust sensor drives a numeric readout and a color ring while auto mode adjusts the four fan speeds on its own. The seller says it carries California air-cleaner certification and Energy Star. The model is new, with no outside measurements yet, and the scent tray adds fragrance, not cleaning.

App and Alexa control come to a small bedside unit with the GoveeLife Smart Mini. The app sets the fan speed, a sleep timer, filter reminders and timed speed changes. AirPurifierFirst found it very quiet but only middling at clearing a room, so it fits a small bedroom or office best. It has no sensor of its own, so auto mode needs GoveeLife's air-quality monitor, sold separately, and the app connects only over 2.4 GHz Wi-Fi.

Power from a laptop, a power bank or a car's USB port runs the Mooka M01, since it plugs into a USB-C cable instead of the wall. The controls cover four speeds, a timer, a night light and a child lock. There's no battery and no wall adapter in the box. There's no outside test of this model, and a larger Mooka purifier measured well under its claimed output, so treat the box's coverage figures with caution.