Every purifier, by the room it really cleans
Sorted biggest first. Highlighted is the real coverage at 4.8 air changes an hour with a 2.5 m ceiling; struck through is what the box says.
See how big they are, drawn to the same scale
Figures last checked 1 Nov 2026
Verified CADR 17

- Really cleans
- 905 sq ft84 m² 84 m²905 sq ft
- Box says
- 4,455 sq ft414 m² 4.9× overstated
- New filter
- 4 months

- Really cleans
- 662 sq ft61 m² 61 m²662 sq ft
- Box says
- 3,235 sq ft301 m² 4.9× overstated
- New filter
- 9 months

- Really cleans
- 595 sq ft55 m² 55 m²595 sq ft
- Box says
- 2,909 sq ft270 m² 4.9× overstated
- New filter
- 6–12 months

- Really cleans
- 539 sq ft50 m² 50 m²539 sq ft
- Box says
- 2,635 sq ft245 m² 4.9× overstated
- New filter
- 12–15 months

- Really cleans
- 513 sq ft47 m² 47 m²513 sq ft
- Box says
- 2,506 sq ft233 m² 4.9× overstated
- New filter
- 3–12 months

- Really cleans
- 457 sq ft42 m² 42 m²457 sq ft
- Box says
- 465 sq ft43 m² about right
- New filter
- 3–12 months

- Really cleans
- 431 sq ft40 m² 40 m²431 sq ft
- Box says
- 2,207 sq ft205 m² 5.1× overstated
- New filter
- 9 months

- Really cleans
- 411 sq ft38 m² 38 m²411 sq ft
- Box says
- 2,006 sq ft186 m² 4.9× overstated
- New filter
- 12 months

- Really cleans
- 385 sq ft35 m² 35 m²385 sq ft
- Box says
- 392 sq ft36 m² about right
- New filter
- 12 months

- Really cleans
- 381 sq ft35 m² 35 m²381 sq ft
- Box says
- 1,862 sq ft173 m² 4.9× overstated
- New filter
- 6–12 months

- Really cleans
- 356 sq ft33 m² 33 m²356 sq ft
- Box says
- 1,718 sq ft160 m² 4.8× overstated
- New filter
- 6–12 months

- Really cleans
- 233 sq ft21 m² 21 m²233 sq ft
- Box says
- 1,138 sq ft106 m² 4.9× overstated
- New filter
- 9 months

- Really cleans
- 217 sq ft20 m² 20 m²217 sq ft
- Box says
- 1,066 sq ft99 m² 4.9× overstated
- New filter
- 6–8 months

- Really cleans
- 217 sq ft20 m² 20 m²217 sq ft
- Box says
- 1,066 sq ft99 m² 4.9× overstated
- New filter
- 6–12 months

GermGuardian
AHAM verified
- Really cleans
- 150 sq ft14 m² 14 m²150 sq ft
- Box says
- 743 sq ft69 m² 4.9× overstated
- New filter
- 6–8 months

- Really cleans
- 137 sq ft12 m² 12 m²137 sq ft
- Box says
- 672 sq ft62 m² 4.9× overstated
- New filter
- 6–8 months

- Really cleans
- 51 sq ft4 m² 4 m²51 sq ft
- Box says
- 254 sq ft24 m² 4.9× overstated
- New filter
- 6–12 months
Not independently verified 9
The CADR here is the maker's own claim. We show the maths, but we don't make these a pick until the figure is verified.

- Really cleans
- 164 sq ft15 m² 15 m²164 sq ft
- Box says
- 810 sq ft75 m² 4.9× overstated
- New filter
- 12 months

- Really cleans
- 206 sq ft19 m² 19 m²206 sq ft
- Box says
- 517 sq ft48 m² 2.5× overstated
- New filter
- 6–12 months

- Really cleans
- 233 sq ft21 m² 21 m²233 sq ft
- Box says
- 1,035 sq ft96 m² 4.4× overstated
- New filter
- 6–12 months

- Really cleans
- 355 sq ft32 m² 32 m²355 sq ft
- Box says
- 1,748 sq ft162 m² 4.9× overstated
- New filter
- 6–12 months

- Really cleans
- 365 sq ft33 m² 33 m²365 sq ft
- Box says
- 1,800 sq ft167 m² 4.9× overstated
- New filter
- 12 months

- Really cleans
- 374 sq ft34 m² 34 m²374 sq ft
- Box says
- 1,748 sq ft162 m² 4.7× overstated
- New filter
- 6–12 months

- Really cleans
- 391 sq ft36 m² 36 m²391 sq ft
- Box says
- 1,070 sq ft99 m² 2.7× overstated
- New filter
- 12–24 months

- Really cleans
- 499 sq ft46 m² 46 m²499 sq ft
- Box says
- 3,120 sq ft290 m² 6.2× overstated
- New filter
- 6–12 months

- Really cleans
- 536 sq ft49 m² 49 m²536 sq ft
- Box says
- 2,640 sq ft245 m² 4.9× overstated
- New filter
- 12 months