Blueair Blue Pure 211+ Air Purifier: CADR, Noise, Coverage & Specs

Quick verdict

The Blueair Blue Pure 211+ is best suited to large rooms where high airflow are priorities. Its 350 CFM smoke CADR supports about 543 sq ft at approximately 4.8 air changes per hour. Buyers should separately evaluate filter cost, maximum-speed noise, and Blueair’s HEPASilent filtration before deciding.

Best for

• Large open rooms

Consider alternatives if

• You need a verified maximum-speed noise figure
• Filter replacement interval or cost is a deciding factor

Verified strengths

• 350 CFM smoke CADR (~543 sq ft at ~4.8 ACH)
• 31 dB published minimum noise
• HEPASilent filtration (as published)

Verified limitations or missing information

• Maximum-speed noise is not in our sources
• Filter replacement interval is not verified

Blueair Blue Pure 211+ overview

The Blueair Blue Pure 211+ is a large-room air purifier with a smoke CADR of 350 CFM. Based on our CADR-based room-size method, it is suitable for approximately 543 sq ft. It includes HEPASilent filtration and 31 dB minimum noise.

Blueair Blue Pure 211+ CADR and room size

Recommended room size is about 543 sq ft (CADR × 1.55). That is approximately 4.8 air changes per hour in a room with an eight-foot ceiling. Our recommended room size uses approximately 4.8 air changes per hour with an eight-foot ceiling. Manufacturer coverage figures may use a lower air-change rate and are shown separately.

Validated coverage from documentation is 540 sq ft.

Blueair Blue Pure 211+ noise level

Published minimum noise is 31 dB.

Maximum-speed noise is not in our sources.

Blueair Blue Pure 211+ filtration

Published filter type: HEPASilent.

Blueair describes HEPASilent as a combination of mechanical and electrostatic filtration. We do not independently verify particle-removal efficiency.

Filter replacement interval is not verified in our sources.

Blueair Blue Pure 211+ smart features

No published Wi-Fi or app control in our sources.

Blueair Blue Pure 211+ specifications

CADR (smoke)

350 CFM

CADR (dust)

350 CFM

CADR (pollen)

350 CFM

Recommended room size

543 sq ft

Validated coverage

540 sq ft

Minimum noise

31 dB

Filter type

HEPASilent

About Blueair air purifiers

Blueair models in this catalog are compared by CADR, recommended room size, noise, and filter type.

See all Blueair air purifiers

Blueair Blue Pure 211+ alternatives

• Blueair Blue Pure 311i Max — CADR 365 CFM
• Blueair Blue Signature SP3i — CADR 321 CFM
• Blueair Blue Pure 211i Max — CADR 435 CFM
• Blueair Blue Signature — CADR 455 CFM
• Blueair 2-in-1 Pro Purify + Humidify — CADR 235 CFM
• Blueair Blue Pure 511i Max — CADR 174 CFM

Blueair Blue Pure 211+ comparisons

Compared with the Blueair Blue Pure 311i Max, the Blueair Blue Pure 211+ has 4% lower CADR.

• Blueair 211+ vs Blueair 311i Max
• Blueair 211+ vs Blueair Blue Signature SP3i
• Blueair 211+ vs Blueair 211i Max
• Blueair 211+ vs Levoit Core P350-P
• Blueair 211+ vs Medify Air MA-40
• Blueair 211+ vs Dreame AirPursue PM20

What is the CADR of the Blueair Blue Pure 211+?

Smoke CADR is 350 CFM.

What room size is the Blueair Blue Pure 211+ suitable for?

About 543 sq ft at approximately 4.8 air changes per hour with an eight-foot ceiling.

How loud is the Blueair Blue Pure 211+?

Minimum reported noise: 31 dB.

Does the Blueair Blue Pure 211+ have Wi-Fi?

No published Wi-Fi or app control in our sources.

What filter does the Blueair Blue Pure 211+ use?

HEPASilent.

Methodology

Specifications are compiled from manufacturer documentation, product listings and other cited sources.

How we calculate recommended room size.

Sources

• https://www.blueair.com/