Side-by-side comparison based on expert reviews and community consensus.
Blueair Blue Pure 211i Max
Best for Large RoomsLevoit Core 300S
Best BudgetPrice
$200-$280
$60-$100
Summary
Wirecutter's top pick for large spaces, capable of cleaning up to 750 sq ft on high. Quiet for its power level and energy-efficient enough for all-day use.
The top budget pick for small rooms, with app control and a compact footprint. Consistently recommended for bedrooms and home offices where you need quiet, effective filtration without spending much.
Pros
- Delivers 4 air changes per hour in spaces up to 750 sq ft on high setting
- Not particularly power-hungry for its size and output
- Consistently top-ranked by Wirecutter and CNET for large-room performance
- Fabric pre-filter is washable, reducing ongoing filter costs
- Affordable entry price with app and smart home compatibility
- Compact and quiet — ideal for bedrooms and small offices
- True HEPA filtration with multiple specialty filter options available
- Consistently appears on RTINGS and CNET best-of lists
Cons
- Higher upfront cost than budget competitors
- Replacement filters are pricier than Coway or Winix
- Bulky footprint may not suit smaller apartments
- CADR too low for rooms larger than ~200 sq ft
- Replacement filters need changing more frequently than larger units
- No air quality sensor on base model
Our take
If you have a large living room or open-plan space, the 211i Max is the one to get. Wirecutter tested it extensively and CNET's lab confirmed Blueair's performance claims — this is the rare case where expert consensus and real-world results align perfectly.
For a bedroom or small office, the Core 300S is hard to beat at this price. Levoit's app integration at this price point is genuinely useful, and the filtration performance in small spaces is solid — don't spend more unless you have a larger room.
Buy
