One of the smallest HEPA air purifiers available is the USB powered QUEENTY desk air filter.
Despite its compact size, it has 3 stage air filtration with prefilter, True HEPA and activated carbon filter for odors and chemical gases like volatile organic compounds.
Its makers say it will remove 99.97% of dust, pollen, pet dander and smoke and filters out particles as low as 0.3 microns, including PM 2.5 pollution.
A plug-in USB air purifier this small would have a limited air cleaning range though and should be positioned quite close to you for optimal results.
The QUEENTY’s unusual mini-tower design makes this easy to do. You can plug it into any USB port, such as those in laptops, phone chargers and any power socket with any adapter.
As well as the True HEPA and carbon filters, the QUEENTY also works as a negative ion generator, producing 3 million ions per cubic centimeter per second.
This tiny air cleaner comes with 2 fan speeds, oscillating mode, free USB charging cable and a 30-day money-back guarantee, according to the manufacturers.
You can see the QUEENTY USB air purifier with True HEPA filter here on Amazon at a great price for so much technology. This model is clearly a popular choice with hundreds of positive customer reviews and ratings.
More Small HEPA Filter Options
There are several more recommended desk ionizers and plug-in mini air cleaners here as well to compare with the QUEENTY mini HEPA filter in this review.
They work best in compact spaces, like studies, bathrooms, dorm rooms and small bedrooms.
If you are looking to purify the air in a larger room and space isn’t an issue then consider a high powered ionic air purifier instead.
This article may contain affiliate links to products I've researched and recommend. As an Amazon Associate I may earn from qualifying purchases at no cost to the consumer.