Levoit Core 400S Smart Air Purifier vs Winix 5500-2 Air Purifier (2026)

✍️ By the 247Verdict Editorial Team📅 Updated 05 October 2026

Which is better? We compared both on score, owner ratings, pros and cons.

Levoit Core 400S Smart Air Purifier

9.2/10 Excellent

4.6★ (28,700 owners)

True HEPA H13 for rooms up to 40m². The best-value genuine air purifier available.

Full Review

Winix 5500-2 Air Purifier

8.9/10 Great

4.6★ (41,200 owners)

True HEPA with PlasmaWave technology. Sleep mode at 27.8dB. One of the best-reviewed air purifiers in the US.

Full Review

At a Glance

	Levoit Core 400S Smart Air Purifier	Winix 5500-2 Air Purifier
247Verdict Score	9.2/10	8.9/10
Owner Rating	4.6★ (28,700)	4.6★ (41,200)
Verdict	Excellent	Great
Filter	True HEPA H13	True HEPA + carbon
CADR	260 m³/h (tested)	232 m³/h
Coverage	Up to 40m²	Up to 37m²
Warranty	2 years	2 years

Quick Verdict

Both are strong choices, but the Levoit Core 400S Smart Air Purifier edges ahead with a 9.2/10 vs 8.9/10. True HEPA H13 for rooms up to 40m². The best-value genuine air purifier available. That said, the Winix 5500-2 Air Purifier is worth considering if True HEPA with PlasmaWave technology. Sleep mode at 27.8dB. One of the best-reviewed air purifiers in the US. Check the current price on PuroAir →

Pros & Cons Side by Side

Levoit Core 400S Smart Air Purifier

True HEPA H13 captures 99.97% of particles 0.3 microns and above
CADR 260m³/h — independently tested, not just manufacturer claims
PM2.5 laser sensor triggers auto mode when air quality drops
VeSync app provides air quality history and scheduling
Relatively low filter running costs — ~£25-35/year vs Dyson's £70+

Purification only — no heating or cooling like Dyson HP09
Real-world coverage is 40m² — ignore the 'large room' marketing for anything bigger
Auto mode fan noise at maximum (52dB) is noticeable

Winix 5500-2 Air Purifier

True HEPA captures 99.97% of particles 0.3 microns
PlasmaWave technology neutralises odours and biological compounds at molecular level
Auto mode responds to real-time air quality sensor
Sleep mode at 27.8dB — genuinely near-silent for bedroom use
One of the most extensively reviewed air purifiers on Amazon — strong reliability data

PlasmaWave can produce trace ozone — disable if ozone-sensitive
Primarily a US product — UK availability varies
Less smart app integration than Levoit Core 400S

FAQ

Which is better, Levoit Core 400S Smart Air or Winix 5500-2 Air Purifier?

Is the Levoit Core 400S Smart Air worth the extra cost?

Yes — Levoit Core 400S Smart Air Purifier scores higher at 9.2/10 vs 8.9/10.

Who is the Levoit Core 400S Smart Air best suited to?

True HEPA H13 for rooms up to 40m². The best-value genuine air purifier available.

Who is the Winix 5500-2 Air Purifier best suited to?

True HEPA with PlasmaWave technology. Sleep mode at 27.8dB. One of the best-reviewed air purifiers in the US.

What are the main downsides of each?

Levoit Core 400S Smart Air Purifier: Purification only — no heating or cooling like Dyson HP09; Real-world coverage is 40m² — ignore the 'large room' marketing for anything bigger. Winix 5500-2 Air Purifier: PlasmaWave can produce trace ozone — disable if ozone-sensitive; Primarily a US product — UK availability varies.

Do owner ratings agree with our verdict?

Largely, yes — Levoit Core 400S Smart Air Purifier sits at 4.6★ from 28,700 verified Amazon owners, and Winix 5500-2 Air Purifier at 4.6★ from 41,200.

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