Air purifiers · Prices updated at 10:12 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.
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| Levoit Core 300S-P × | |
|---|---|
| The facts that decide most | |
| The lowest price today at a store that ships to you, shipping included. A price with an asterisk comes from a store abroad, and its shipping cost is our own estimate. Lowest price | $149Levoit (brand store) |
| Our own score out of 10: 60% measured facts and 40% store ratings. Price does not count. Score | |
| How much clean air the purifier delivers an hour, measured with smoke, dust and pollen. A higher figure cleans a bigger room or the same room faster. When it matters
When it matters less
Source
| 141 cfm (240 m³/h) |
| The room size where the purifier changes the air 4.8 times an hour under a 2.5 m ceiling, worked out from its CADR. We use it so every model is compared on the same rule. When it matters
When it matters less
Source
| 215 ft² (20 m²) |
| How fine the filter is. True HEPA and H13 catch at least 99.97% of particles at 0.3 microns. HEPA-type is a weaker claim with no test behind it. When it matters
When it matters less
Source
| True HEPA |
| How long the maker says a filter lasts, in months of normal use. A filter that is spent cleans less. When it matters
When it matters less
Source
| 6 months |
| The sound level at the lowest speed, as the maker measures it. When it matters
When it matters less
Source
| 22 dB |
| The sound level at the highest speed, as the maker measures it. When it matters
When it matters less
Source
| 50 dB |
| Tests, rank and ratings | |
| Where the model stands in our ranking, among the purifiers for the same size of room. Rank | rank 1 of 7 for medium rooms |
| The average of the stars buyers give at the stores, with the number of reviews behind it. We only compare it from 20 reviews. Customer rating | – |
| Running cost | |
| What the filters cost over a year, at the lowest store price for each filter today and the filter life the maker states. It moves with the store prices. Filters a year lower is better | $59 a year |
| Smart features and warranty | |
| Whether you can control the purifier from a phone app, over wifi or only nearby over Bluetooth. When it matters
When it matters less
Source
| Wi-Fi |
| Which voice assistants the robot works with, such as Google Assistant or Alexa. When it matters
When it matters less
Source
| Alexa, Google Assistant |
| Matter is the standard that lets devices from different makers work together. With it you can run the robot outside the maker’s own app. When it matters
When it matters less
Source
| no (assumed) |
| Cleaning performance | |
| The test the CADR comes from. AHAM AC-1 and the DOE test are independent and comparable. A maker's own test is not. Source
| Not stated |
| The CADR measured with tobacco smoke, the finest of the three test particles. It is the figure to read for wildfire smoke. When it matters
When it matters less
Source
| 141 cfm (240 m³/h) |
| The room size the maker states. Makers use different rules, so we show it but never rank on it. Source
| 219 ft² (20 m²) |
| How many times an hour the maker assumes the air is changed when it states a room size. Source
| 4.8 per hour |
| Filter | |
| Whether the particle and carbon layers are one filter or separate ones. Separate filters let you replace only the part that is spent. When it matters
When it matters less
Source
| One combined filter |
| A filter of activated carbon that takes out smells and some gases. It does not catch particles. When it matters
When it matters less
Source
| yes |
| How many filters the purifier holds, each a part to replace. Source
| 1 |
| Replacement filter part number | Core 300-P-RF |
| Running costs | |
| How long the carbon filter lasts before it needs replacing, as its maker states it. Where it is a separate part, it is bought on its own schedule. When it matters
When it matters less
Source
| 6 months |
| Noise and power | |
| The sound at the lowest speed, measured by HouseFresh with a sound meter on the US model. It is HouseFresh’s measurement and does not count in our score. Source
| 39 dB |
| The sound at the highest speed, measured by HouseFresh with a sound meter on the US model. It is HouseFresh’s measurement and does not count in our score. Source
| 55 dB |
| The power the purifier draws at its highest speed. Source
| 23 W |
| What the purifier draws when it is switched off but still plugged in, or waiting for the app. When it matters
When it matters less
Source
| 2 W |
| Air quality sensing | |
| What the purifier measures in the air. A particle sensor lets it speed up and slow down by itself. When it matters
When it matters less
Source
| PM2.5 |
| How the purifier measures fine dust. A laser sensor reads smaller particles and lower levels more precisely than an infrared one. When it matters
When it matters less
Source
| Laser |
| The fan speed follows the air quality the sensor reads. When it matters
When it matters less
Source
| yes |
| Build | |
| The purifier’s shape: a small tabletop unit, a tall tower, a box that stands on the floor or a unit mounted on the wall. When it matters
When it matters less
Source
| Tabletop |
| How tall the purifier is. It decides whether it fits on a shelf or under a window sill. When it matters
When it matters less
Source
| 14.2 in (36 cm) |
| How wide the purifier is. With its depth it decides how much floor it takes up. When it matters
When it matters less
Source
| 220 mm |
| How deep the purifier is, front to back. Source
| 220 mm |
| What the purifier weighs. It counts most if you move it from room to room. When it matters
When it matters less
Source
| 6 lb (2.7 kg) |
| Extras | |
| An ioniser charges particles so they stick to walls and furniture instead of the filter, and some come loose again later. Some also make ozone, which irritates the airways and can turn scents in the room into formaldehyde. That is why a switch to turn it off matters. When it matters
When it matters less
Source
| None |
| Certified by the California Air Resources Board as making little ozone. Source
| yes |
| Warranty and certification | |
| The warranty the maker gives in the United States. When it matters
When it matters less
Source
| 2 years |
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.
Air purifier market report, September 2026 No prices yet, but 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.
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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