Best Air Purifier for a Small Apartment: 6 Compact Picks
Six compact HEPA air purifiers for studios and small apartments, with each maker's coverage, CADR, noise and footprint, and how to size one for an open plan.
Short answerFor a studio or small one-bedroom, pick one compact purifier sized for the main room rather than several tiny ones: the Coway Airmega Mighty2 Mini is the quiet all-rounder, with a smoke CADR of 143 and a lowest published noise of 19.2 dB. The Levoit Core 300-P and Coway Airmega 100 each stand on an 8.7-inch square of floor, and the slim Coway Airmega 160 sits flat against a wall.
Compare the 6 picks
| Pick | Best for | Amazon |
|---|---|---|
| COWAY Airmega Mighty2 Mini HEPA Air Purifier, White | A studio or open-plan living room where you want a quiet unit that still moves real air. | Check price on Amazon |
| Levoit Core 300-P Air Purifier, White | A small footprint for a corner or a sturdy shelf, with a higher published CADR than the Airmega 100. | Check price on Amazon |
| Levoit Eleva 300X Air Purifier | A newer Levoit with a lower sleep-mode figure than the Core 300-P. | Check price on Amazon |
| COWAY Airmega 160 Air Purifier, White | A small apartment where the purifier needs to sit flat against a wall. | Check price on Amazon |
| COWAY Airmega 100 Air Purifier, White | A smaller budget for a single room, such as the bedroom of a one-bedroom apartment. | Check price on Amazon |
| Medify MA-14 Air Purifier with HEPA Filter, White | The smallest space here, such as a sleeping nook or a home office corner. | Check price on Amazon |
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On this page
How to size a purifier for a small apartment
- Measure the room the purifier will live in. In a studio that is the whole open space; in a one-bedroom it is usually the living area by day and the bedroom by night.
- EPA's advice is to choose a portable air cleaner with a clean air delivery rate (CADR) large enough for the size of the room, and says the higher the CADR, the larger the area it can serve.
- Makers' room sizes are not comparable on their own. Coway and Levoit quote one figure at one air change an hour and a smaller one at more air changes; Medify quotes how much space a unit can clean in 30 minutes. Compare the same basis, or compare CADR.
- EPA notes that an air cleaner filters less air at a lower speed, so a unit sized with room to spare can run quietly and still keep up.
- EPA says to avoid air cleaners that intentionally produce ozone, a lung irritant. Every pick here is a filter-based unit.
Footprint and noise in a small space
- In a studio the purifier is in the room you sleep in, so the lowest published noise figure matters. All six picks list a lowest setting between about 19 and 26 dB; higher speeds are louder.
- Floor space is tight in a small apartment. The Levoit Core 300-P and Coway Airmega 100 are each 8.7 by 8.7 in across, and the Coway Airmega 160 is 6.5 in deep, by the makers' figures.
- Keep the intake and outlet clear of curtains and furniture, and check the price and life of replacement filters before you buy.
6 picks and who each one suits
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COWAY Airmega Mighty2 Mini HEPA Air Purifier, White
Best for: A studio or open-plan living room where you want a quiet unit that still moves real air.
Coway lists a smoke CADR of 143, room coverage of 1,043 square feet at one air change an hour, noise from 19.2 to 49 decibels and a size of 13.9 by 8 by 14.6 in.
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Levoit Core 300-P Air Purifier, White
Best for: A small footprint for a corner or a sturdy shelf, with a higher published CADR than the Airmega 100.
Levoit lists a CADR of 143 CFM, an ideal room size of 222 square feet at 4.8 air changes an hour (1,066 at one), noise from 24 to 54.5 dB and a size of 8.7 by 8.7 by 14.2 in.
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Levoit Eleva 300X Air Purifier
Best for: A newer Levoit with a lower sleep-mode figure than the Core 300-P.
Levoit lists a CADR of 161 CFM, an ideal room size of 250 square feet at 4.8 air changes an hour (1,200 at one), noise from 20 to 50 dB and a size of 9.4 by 9.4 by 15.1 in.
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COWAY Airmega 160 Air Purifier, White
Best for: A small apartment where the purifier needs to sit flat against a wall.
Coway lists a smoke CADR of 153, coverage of 214 square feet at 4.8 air changes an hour (1,035 at one), noise from 19.98 to 48.3 dB(A) and a slim size of 13.4 by 18.5 by 6.5 in.
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COWAY Airmega 100 Air Purifier, White
Best for: A smaller budget for a single room, such as the bedroom of a one-bedroom apartment.
Coway lists a smoke CADR of 108, coverage of 405 square feet at two air changes an hour (810 at one), noise from 20 to 48 dB(A) and a size of 8.7 by 15.6 by 8.7 in.
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Medify MA-14 Air Purifier with HEPA Filter, White
Best for: The smallest space here, such as a sleeping nook or a home office corner.
Medify says it can clean 213 square feet in 30 minutes and lists a sleep-mode noise of 26 dBA, a size of 12.20 by 8.26 by 8.26 in and a weight of 7 lb. It is the lowest-airflow pick on this page.
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How we chose
This guide is desk research. We compared each maker's own product page (CADR, room coverage, noise and dimensions) with EPA's Guide to Air Cleaners in the Home, and kept filter-based units small enough for a studio or one-bedroom apartment. We did not test any of these purifiers; the figures are the makers' own, and a listing describes what its seller says, not how a unit performs in your home.
Listings, sellers and stock change quickly. At time of writing (November 7, 2026), every "Check price on Amazon" button on this page went to an exact Amazon listing for the product named that the Amazon product data showed as new and in stock, sold by Amazon.com or by the brand's own store; a "Search Amazon for" button means no such listing was confirmed, so check the seller and model on the results page. Prices are not shown because they change.