Dyson Purifier Hot+Cool HP09 vs Levoit Core 400S Smart 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.

Dyson Purifier Hot+Cool HP09

9.0/10 Excellent

4.5★ (6,400 owners)

Heats, cools and purifies. HEPA H13 + activated carbon. Air quality sensors with real-time display.

Full Review

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

At a Glance

	Dyson Purifier Hot+Cool HP09	Levoit Core 400S Smart Air Purifier
247Verdict Score	9.0/10	9.2/10
Owner Rating	4.5★ (6,400)	4.6★ (28,700)
Verdict	Excellent	Excellent
Filter	HEPA H13 + activated carbon	True HEPA H13
Coverage	Up to 70m²	Up to 40m²
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 9.0/10. True HEPA H13 for rooms up to 40m². The best-value genuine air purifier available. That said, the Dyson Purifier Hot+Cool HP09 is worth considering if Heats, cools and purifies. HEPA H13 + activated carbon. Air quality sensors with real-time display. Check the current price on PuroAir →

Pros & Cons Side by Side

Dyson Purifier Hot+Cool HP09

Three functions in one: heater, fan and HEPA H13 air purifier
Real-time particulate and VOC sensors display air quality continuously
Fully sealed system — air only exits through the filter, not around it
Projects purified air across the whole room (not just near the unit)
App control and scheduling — runs intelligently without intervention

£600+ for a fan/heater/purifier combination
Heater function raises electricity costs if used frequently
Filter replacement costs £60-70 per year — budget for this

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

FAQ

Which is better, Dyson Purifier Hot+Cool HP09 or Levoit Core 400S Smart Air?

Is the Dyson Purifier Hot+Cool HP09 worth the extra cost?

The Levoit Core 400S Smart Air Purifier matches or exceeds it at a potentially lower price point.

Who is the Dyson Purifier Hot+Cool HP09 best suited to?

Heats, cools and purifies. HEPA H13 + activated carbon. Air quality sensors with real-time display.

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.

What are the main downsides of each?

Dyson Purifier Hot+Cool HP09: £600+ for a fan/heater/purifier combination; Heater function raises electricity costs if used frequently. 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.

Do owner ratings agree with our verdict?

Largely, yes — Dyson Purifier Hot+Cool HP09 sits at 4.5★ from 6,400 verified Amazon owners, and Levoit Core 400S Smart Air Purifier at 4.6★ from 28,700.

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