Air Purifiers · Head to head

Blueair Blue Pure 211i Max vs Blueair Blue Pure 511i Max

Full Smart Air Purifiers comparison in 2026

Updated August 2026
Data from Amazon and official Blueair site.
2026 verdict
Across the 2026 comparison, Blueair Blue Pure 211i Max earns the nod over Blueair Blue Pure 511i Max on the strength of AHAM verifide. It builds its lead on AHAM verifide, then backs it up with a stronger showing on its broader overall balance. Choose Blueair Blue Pure 511i Max only if price matters more to you than the broader advantage from Blueair Blue Pure 211i Max. That is why Blueair Blue Pure 211i Max wins the verdict here.
vs
FeatureBlueair Blue Pure 211i MaxBlueair Blue Pure 511i MaxWinner
Price$278.99$118.99Blueair Blue Pure 511i Max
AHAM VerifideYESNOBlueair Blue Pure 211i Max
Rating4.54.5Tie
Warranty1 year1 yearTie
Connectivity2.4 GHz WiFi2.4 GHz WiFiTie
IntegrationsGoogle Home, AlexaGoogle Home, AlexaTie
FiltrationHEPA Filter, Activated Carbon Filter, Washable Pre-FilterHEPA Filter, Activated Carbon Filter, Washable Pre-FilterTie
SensorsPM1, PM2.5, PM10PM1, PM2.5, PM10Tie
Auto ModeYESYESTie

Frequently Asked Questions

Which is better overall: Blueair Blue Pure 211i Max or Blueair Blue Pure 511i Max?

Blueair Blue Pure 211i Max has the stronger overall profile in this comparison, especially for AHAM verifide.

What is the biggest difference between Blueair Blue Pure 211i Max and Blueair Blue Pure 511i Max?

Price is one of the clearest differences: Blueair Blue Pure 211i Max lists $278.99, while Blueair Blue Pure 511i Max lists $118.99.

Which one looks better on price?

Blueair Blue Pure 211i Max is listed at $278.99, while Blueair Blue Pure 511i Max is listed at $118.99. Blueair Blue Pure 511i Max (better spec).

Who should buy Blueair Blue Pure 211i Max?

Choose Blueair Blue Pure 211i Max if your priority is AHAM verifide and that matters more than price.

Who should buy Blueair Blue Pure 511i Max?

Choose Blueair Blue Pure 511i Max if your priority is price and that matters more than AHAM verifide.

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