Levoit Core 400S-P
AHAM verified
- 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
Winix · 5510
Winix 5510
Really cleansAHAM verified
385 sq ft35 m² 35 m²385 sq ft
At 4.8 air changes an hour with a 2.5 m ceiling
- Box says
- Verified Room Size 392 sq.ft.Verified Room Size 392 sq.ft. (36 m²) about right
- New filter
- Every 12 months
See it on Amazon: Winix 5510Paid link
A verified tower with an honest room size on its spec sheet. Cleans a large living room, and PlasmaWave can be switched off.
Verdict
Who it's for
One of the few purifiers whose printed room size agrees with our maths, and AHAM has verified its CADR. It has an air quality sensor and auto mode. It also has Winix's PlasmaWave ionizer, which a button on the panel turns off.
Good
- CADR verified by AHAM
- Printed room size matches the real one
- Air quality sensor and auto mode
- HEPA and carbon filter last about a year
Trade-offs
- Has an ionizer (PlasmaWave): switch it off if you'd rather not
- Flat tower needs space around it to draw air
Spec facts
Winix 5510 · 5510
- Really cleans
- 385 sq ft · 35 m²35 m² · 385 sq ftat 4.8 air changes an hour, 2.5 m ceiling
- Box claim
- Verified Room Size 392 sq.ft.Verified Room Size 392 sq.ft. (36 m²)about right
- Maker’s manual: Winix · checked 1 Nov 2026
- Filter
- Winix Filter Q (1712-0123-00)True HEPA + AOC activated carbon, washable pre-filter. Replace every 12 months
- Maker’s manual: Winix · checked 1 Nov 2026
Certified: measured in an independent lab for AHAM’s Verifide programme. Maker’s claim: the manufacturer’s own figure, not independently checked. Where figures come from
Running it
Filter and upkeep
- Replacement filter
- Winix Filter Q (1712-0123-00)
- Type
- True HEPA + AOC activated carbon, washable pre-filter
- Replace every
- 12 months
- Power at top speed
- 65 W
A new filter every 12 months means 1 filter a year. At top speed it draws 65 W: 1.6 kWh if it ran flat out all day. Slower settings use less.
We have no Amazon link for this filter: the maker's page in the sources sells or lists it.
Source: Maker’s manual, Winix, checked 1 Nov 2026
The box vs the maths
The box says 392 sq ft36 m². It really cleans 385 sq ft35 m².
To clean 392 sq ft36 m² it would only change the air in the room 4.7 times an hour. We size every purifier at 4.8 air changes an hour, the level AHAM's room-size guideline works out to.
Winix quotes AHAM's suggested room size, which is worked out at the same 4.8 air changes an hour, so the box and the maths agree. The small gap is the ceiling: AHAM assumes 8 ft (2.44 m), we use 2.5 m.
430 m³/h smoke CADR ÷ (4.8 × 2.5 m ceiling) = 35.8 m² = 385.6 sq ft35.8 m²
Use the calculator for your exact room and ceiling, or read how we pick.
The box claims Verified Room Size 392 sq.ft., about the 385 sq ft35 m² it really cleans. A rare honest box.
Room sizes
Which rooms it fits
It suits 215 sq ft20 m² and 269 sq ft25 m² rooms best: there it has 40–75% more air than the room needs, so it needn't run flat out. At 376 sq ft35 m² it only just keeps up (no air to spare), so it would run near its top speed, usually its loudest (why we don’t list noise). In rooms of 161 sq ft15 m² or less it's more than twice the size needed; a smaller model does the job.
Under a 2.7 m ceiling it covers 357 sq ft, under 3 m 321 sq ftUnder a 2.7 m ceiling it covers 33 m², under 3 m 29 m², so with a 3 m ceiling it no longer covers 322 sq ft30 m² or 376 sq ft35 m² (why).
For a 430 sq ft room or bigger it's too small: the For a 40 m² room or bigger it's too small: the 430 sq ft40 m² page lists models that cover it.
Alternatives
The Winix 5510 or one of these?
The certified models closest in size, and what is different about each, from the same kinds of source.
Cleans 356 sq ft, 29 sq ft lessCleans 33 m², 2 m² less. It has no ionizer. It needs filters more often (every 6–12 months) and draws 38 W at top speed. 4.3 cm shorter and 1 kg lighter.
Levoit Vital 200S-P
AHAM verified
- 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
Cleans 381 sq ft, 4 sq ft lessCleans the same 35 m². It has no ionizer. It needs filters more often (every 6–12 months) and draws 50 W at top speed. 6.1 cm shorter.
Winix T810
AHAM verified
- Really cleans
- 411 sq ft38 m² 38 m²411 sq ft
- Box says
- 2,006 sq ft186 m² 4.9× overstated
- New filter
- 12 months
Cleans 411 sq ft, 26 sq ft moreCleans 38 m², 3 m² more. Same sensor, ionizer and filter interval. 4.5 cm shorter and 1.4 kg lighter.
Sources
Where these numbers come from
- Certified AHAM Verifide directory: Winix 5510, 5520, 5530 · AHAM Verifide
- Maker’s manual Winix 5510 / 5520 user manual (PDF) · Winix
We don't test purifiers ourselves: every figure on this page is copied from these sources and was last checked on 1 Nov 2026. Spotted one that's wrong or out of date? Tell us and we'll fix it and change the date.