Air purifiers · Prices updated at 9:22 AM ET
The best air purifier for every budget in 2026
Every model with a known CADR ranked by measured facts and owners’ ratings, priced at 10 stores, shipping to the United States included.
Side by side
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| Blueair Blue Pure 511 × | |
|---|---|
| Price and ranking | |
| Lowest price | $99Blueair (brand store) |
| Score | |
| Rank | rank 5 of 7 for medium rooms |
| Customer rating | – |
| Room size | |
| Room size | medium roomsup to 189 ft² |
| Size, noise and age | |
| Height lower is better | 13.4 in (34 cm) |
| On the market since | December 2024 |
| Smart features and warranty | |
| Matter | no (assumed) |
| Cleaning performance | |
| Clean air delivery rate (CADR) | 122 cfm (207 m³/h) |
| CADR measured to | DOE test |
| CADR for smoke | 122 cfm (207 m³/h) |
| CADR for dust | 123 cfm (209 m³/h) |
| CADR for pollen | 123 cfm (209 m³/h) |
| CADR for fine particles (PM2.5) | 124 cfm (211 m³/h) |
| Room size we compare on | 186 ft² (17 m²) |
| Room size the maker claims | 189 ft² (18 m²) |
| Air changes the maker assumes | 4.8 per hour |
| Filter | |
| HEPA filter class | HEPA-type |
| Filter layout | One combined filter |
| Activated carbon filter | yes |
| Running costs | |
| Filter life | 6 months |
| Energy use a year | 89 kWh |
| Noise and power | |
| Noise at the lowest speed | 24 dB |
| Noise at the highest speed | 49 dB |
| Power at the highest speed | 16 W |
| Energy efficiency (IEF) | 7 cfm/W |
| ENERGY STAR certified | yes |
| Air quality sensing | |
| Air quality sensors | None |
| Automatic mode | no |
| Build | |
| Shape | Tabletop |
| Width | 200.7 mm |
| Depth | 200.7 mm |
| Weight | 4.2 lb (1.9 kg) |
| Extras | |
| Ioniser | None |
| CARB certified | yes |
| Ozone produced | 1 ppb |
| Warranty and certification | |
| AHAM Verifide certified | yes |
| Warranty | 1 year |
Facts as the maker states them. A dash means the maker does not name it. Each model’s page gives the source of every fact. Noise is the maker’s own figure, so we do not judge it, and a customer rating only counts from 20 reviews.
The score is out of 10: 60% measured facts and 40% store ratings. A model is ranked only when its CADR is known. Method.
No model fits all these filters.
Lowest price at every store that ships to the United States, shipping included, before sales tax.
Robot vacuum market report, September 2026 A median price of – and 1 new model.
Frequently asked questions
How big an air purifier do I need?
Match it to the size of the room. Each model in the ranking is grouped by the room size its maker states, and the lists keep a model out when it states none. A common rule of thumb is a clean air delivery rate (CADR) of at least two thirds of the room’s floor area in square feet, for a ceiling of 8 feet.
What is the difference between HEPA H13 and True HEPA?
Both are high-efficiency filters. True HEPA is the American name for a filter that catches 99.97% of particles of 0.3 micrometres, and H13 is the European class for 99.95%. We read the class the maker states and do not treat a filter called HEPA-type or HEPA-like as either.
Can an air purifier make ozone?
Some can, mostly models with an ioniser or a plasma feature. California limits ozone from indoor air cleaners to 50 parts per billion, and the CARB certification shows a model meets that limit. Our asthma filter leaves out models whose ioniser cannot be switched off.
Where we check prices
We read prices every day at most stores, from their product feed or web store. We check them for errors and keep them, so you can see what a price did over the last 90 days. We link to Amazon too, but show no Amazon price until we read it through Amazon’s own API. Until then the price is on Amazon itself.
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- Rabbit Air (brand store) · United States
- Vornado (brand store) · United States
Whose tests we use
Beside each model we also show where these testers place it in their own lists, without counting it in the score:
How we combine measured facts and owners’ ratings into one score is on the method page.
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