Air Purifiers · Head to head

Blueair Blue Pure 311i 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
Blueair Blue Pure 311i Max has the better all-around case than Blueair Blue Pure 511i Max in 2026, starting with AHAM verifide. It has the clearer edge on AHAM verifide, and it stays ahead on its broader overall balance. There is still a case for Blueair Blue Pure 511i Max, but mainly if price is what you value most. That is enough to make Blueair Blue Pure 311i Max the better pick for most buyers.
vs
FeatureBlueair Blue Pure 311i MaxBlueair Blue Pure 511i MaxWinner
Price$229.00$118.99Blueair Blue Pure 511i Max
AHAM VerifideYESNOBlueair Blue Pure 311i 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 311i Max or Blueair Blue Pure 511i Max?

Blueair Blue Pure 311i Max has the stronger overall profile in this comparison, especially for AHAM verifide.

What is the biggest difference between Blueair Blue Pure 311i Max and Blueair Blue Pure 511i Max?

Price is one of the clearest differences: Blueair Blue Pure 311i Max lists $229.00, while Blueair Blue Pure 511i Max lists $118.99.

Which one looks better on price?

Blueair Blue Pure 311i Max is listed at $229.00, while Blueair Blue Pure 511i Max is listed at $118.99. Blueair Blue Pure 511i Max (better spec).

Who should buy Blueair Blue Pure 311i Max?

Choose Blueair Blue Pure 311i 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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