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Appliances head-to-head

Blueair Blue Pure 211+vsLevoit Core 300S

Age hasn't cost the 2017 Blueair Blue Pure 211+ the lead: it averages 8.3 against 8.0 for the 2021 Levoit Core 300S, and takes Performance 8.4 to 6.8.

Blueair Blue Pure 211+

Blueair

8.3

Moves a large room's worth of air while staying quiet enough to forget about.

Price and availability change constantly, so we don't quote them here — the link opens the current Amazon listing.

Levoit Core 300S

Levoit

8.0

The bedside pick: small, genuinely quiet on low, and cheap to keep running.

Price and availability change constantly, so we don't quote them here — the link opens the current Amazon listing.

Where they diverge

The widest gap is Performance, Blueair Blue Pure 211+ ahead 8.4 to 6.8. They come closest on Ease of use, 8.6 to 8.4. Left of center is Blueair Blue Pure 211+, right is Levoit Core 300S.

Blueair Blue Pure 211+ versus Levoit Core 300S — axis scores out of 10Horizontal bar chart of editorial scores out of 10 across 5 axes. Bars for Blueair Blue Pure 211+ run left from the axis labels, bars for Levoit Core 300S run right. Blueair Blue Pure 211+: Performance 8.4, Value 8.2, Durability 7.8, Ease of use 8.6, Quietness 8.6. Levoit Core 300S: Performance 6.8, Value 8.8, Durability 7.0, Ease of use 8.4, Quietness 8.8.Blueair Blue Pure 211+ (left)Levoit Core 300S (right)PerformanceBlueair Blue Pure 211+ — Performance 8.4 out of 108.4Levoit Core 300S — Performance 6.8 out of 106.8ValueBlueair Blue Pure 211+ — Value 8.2 out of 108.2Levoit Core 300S — Value 8.8 out of 108.8DurabilityBlueair Blue Pure 211+ — Durability 7.8 out of 107.8Levoit Core 300S — Durability 7.0 out of 107.0Ease of useBlueair Blue Pure 211+ — Ease of use 8.6 out of 108.6Levoit Core 300S — Ease of use 8.4 out of 108.4QuietnessBlueair Blue Pure 211+ — Quietness 8.6 out of 108.6Levoit Core 300S — Quietness 8.8 out of 108.8Editorial score out of 10 — higher is better

Which one to pick

Take the Blueair Blue Pure 211+

Leads on Performance, Durability and Ease of use.

  • An open-plan living space rather than a bedroom-sized box
  • You want one control and no app
  • The washable fabric sleeve catching pet hair appeals to you

Take the Levoit Core 300S

Leads on Value and Quietness.

  • A bedroom or a nursery where night-time noise decides everything
  • You want scheduling and a sleep mode from an app
  • Cheap replacement filters matter over years of ownership

What each one gets wrong

Blueair Blue Pure 211+

  • Seeing a particulate number is part of trusting the machine
  • Carbon filtration for cooking smells is a priority

Levoit Core 300S

  • A large or open-plan room — this will run flat out and lose
  • You expect the plastics to survive being knocked around

Specs, side by side

SpecBlueair Blue Pure 211+Levoit Core 300S
CoverageLarge roomsSmall rooms
FilterFabric pre-filter plus particle filterThree-stage, several variants
ControlsOne button, three speedsApp, scheduling, sleep mode

Rankings they both appear in

Questions

The Levoit Core 300S is 4 years newer. Why does it score lower?
Because the axes didn't move the way the release dates suggest. The 2017 model takes Performance, Durability and Ease of use, widest on Performance at 8.4 to 6.8. Value and Quietness are where the 2021 model answers, and whether that is enough is the whole question.
What did the 2021 model improve?
Value and Quietness. Value runs 8.8 to 8.2; Quietness runs 8.8 to 8.6. That is not enough to move the average, which stays 8.3 to 8.0.
Which of our lists do both of these appear in?
Blueair Blue Pure 211+ sits at #1 in "Recompute a purifier's coverage and it shrinks", Levoit Core 300S at #4. They also share 2 other lists on the site.