# The best air purifier under $400 in 2026

> On November 14, 2026 the best air purifier under $400 in our ranking is the Levoit Core 300S-P, an air purifier for medium rooms, today $149 at Levoit (brand store) including shipping.

- Page: https://bestatbest.com/us/air-purifiers/under/400
- As of November 14, 2026

## Small rooms

| # | Model | Score | Tested by | Today’s lowest price |
|---|---|---|---|---|
| 1 | [Levoit Sprout](https://bestatbest.com/us/air-purifiers/levoit-sprout) | 7.6 |  | $199 at Levoit (brand store) |
| 2 | [Blueair Mini Restful](https://bestatbest.com/us/air-purifiers/blueair-mini-restful) | 7.6 |  | $149 at Blueair (brand store) |
| 3 | [Levoit Core Mini-P](https://bestatbest.com/us/air-purifiers/levoit-core-mini) | 6.8 |  | $49 at Levoit (brand store) |
| 4 | [Levoit Core 200S-P](https://bestatbest.com/us/air-purifiers/levoit-core-200s) | 6.4 |  | $69 at Levoit (brand store) |
| 5 | [Germ Guardian AC4825](https://bestatbest.com/us/air-purifiers/germ-guardian-ac4825) | 6.0 |  | $99 at Germ Guardian (brand store) |

## Medium rooms

| # | Model | Score | Tested by | Today’s lowest price |
|---|---|---|---|---|
| 1 | [Levoit Core 300S-P](https://bestatbest.com/us/air-purifiers/levoit-core-300s) | 8.0 |  | $149 at Levoit (brand store) |
| 2 | [Blueair Blue Pure 411i+ Max](https://bestatbest.com/us/air-purifiers/blueair-blue-pure-411i-plus-max) | 7.8 |  | $118 at Blueair (brand store) |
| 3 | [Blueair Blue Pure 511i Max](https://bestatbest.com/us/air-purifiers/blueair-blue-pure-511i-max) | 7.3 |  | $93 at Blueair (brand store) |
| 4 | [Blueair Blue Signature Small](https://bestatbest.com/us/air-purifiers/blueair-blue-signature-small) | 7.3 |  | $143 at Blueair (brand store) |
| 5 | [Blueair Blue Pure 511](https://bestatbest.com/us/air-purifiers/blueair-blue-pure-511) | 6.8 |  | $99 at Blueair (brand store) |
| 6 | [Levoit Vital 100S-P](https://bestatbest.com/us/air-purifiers/levoit-vital-100s) | 5.8 |  | $139 at Levoit (brand store) |

## Large rooms

| # | Model | Score | Tested by | Today’s lowest price |
|---|---|---|---|---|
| 2 | [Levoit Core 400S-P](https://bestatbest.com/us/air-purifiers/levoit-core-400s) | 7.7 |  | $219 at Levoit (brand store) |
| 4 | [Coway Airmega Mighty2](https://bestatbest.com/us/air-purifiers/coway-airmega-mighty2) | 7.0 |  | $269 at Coway (brand store) |
| 5 | [Levoit Vital 200S-P](https://bestatbest.com/us/air-purifiers/levoit-vital-200s) | 6.8 |  | $189 at Levoit (brand store) |
| 6 | [Blueair DustMagnet 5440i](https://bestatbest.com/us/air-purifiers/blueair-dustmagnet-5440i) | 6.6 |  | $319 at Blueair (brand store) |

## Open-plan spaces

| # | Model | Score | Tested by | Today’s lowest price |
|---|---|---|---|---|
| 2 | [Levoit Core 600S-P](https://bestatbest.com/us/air-purifiers/levoit-core-600s) | 7.9 |  | $259 at Levoit (brand store) |
| 4 | [Blueair Blue Pure 311i Max](https://bestatbest.com/us/air-purifiers/blueair-blue-pure-311i-max) | 7.6 |  | $160 at Blueair (brand store) |
| 5 | [Blueair Blue Pure 311i+ Max](https://bestatbest.com/us/air-purifiers/blueair-blue-pure-311i-plus-max) | 7.6 |  | $224 at Blueair (brand store) |
| 6 | [Blueair Blue Signature Medium](https://bestatbest.com/us/air-purifiers/blueair-blue-signature-medium) | 7.3 |  | $299 at Blueair (brand store) |
| 7 | [Blueair Blue Signature Large](https://bestatbest.com/us/air-purifiers/blueair-blue-signature-large) | 7.2 |  | $299 at Blueair (brand store) |
| 9 | [Blueair Blue Pure 211i Max](https://bestatbest.com/us/air-purifiers/blueair-blue-pure-211i-max) | 6.8 |  | $227 at Blueair (brand store) |

## Also in our ranking

| # | Model | Room size | Score | Tested by | Today’s lowest price |
|---|---|---|---|---|---|
| 1 | [Vornado PCO375DC](https://bestatbest.com/us/air-purifiers/vornado-pco375dc) | – | 6.6 |  | $349 at Vornado (brand store) |
| 2 | [Vornado PCO575DC](https://bestatbest.com/us/air-purifiers/vornado-pco575dc) | – | 6.6 |  | $399 at Vornado (brand store) |

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Markdown version of https://bestatbest.com/us/air-purifiers/under/400. Prices and ranks change daily: quote the date.