Air purifiers / Comparison

See what changes

Choose up to five exact US purchase options. Compare documented differences and open each source for its conditions.

Option 1

Option 2

Add up to three more options

Option 3

Option 4

Option 5

Show differences onlyReset selection

1 of 5 options selected. Bookmark this address to keep your selection.

The starting packages are single room purifiers with standard filters. Particle removal, gas removal and health outcomes are different claims.

Scroll sideways to see every option. Open a field explanation or source for its conditions.

Documented specifications and exact purchase packages
Compare the details	Blueair Blue Pure 211i Max — Air Purifier Only
Community reviews	No community reviews yet. Purchase packages of the same model share one community score. Read all reviews Write a review
US purchase package	Blue Pure 211i Max; Air Purifier Only; one-time purchase. Product & sources Includes one Particle & Carbon filter and one Stockholm Fog fabric prefilter. Filter subscriptions and optional specialty filters are separate selections. Source · 2026-09-12 Blueair: Blue Pure 211i Max US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
Where to buy	Select: Blue Pure 211i Max; Air Purifier Only; one-time purchase. View at Blueair — Blueair Blue Pure 211i Max — Air Purifier Only; opens in a new tab The link may open several packages. Check current price and availability with the seller. Opens in a new tab.
External rating	4.8 out of 5 from 601 ratings · Best Buy · Checked October 23, 2026.
Smoke CADR Clean-air delivery rate specifically identified for smoke particles. Compare like-for-like particle ratings; this is not a gas-removal or health-outcome rating.	435 cfm Source · 2026-09-12 Blueair: Blue Pure 211i Max US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
Dust CADR Clean-air delivery rate specifically identified for dust. Keep this separate from smoke and pollen CADR.	452 cfm Source · 2026-09-12 Blueair: Blue Pure 211i Max US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
Pollen CADR Clean-air delivery rate specifically identified for pollen. Use the same particle type when comparing models.	450 cfm Source · 2026-09-12 Blueair: Blue Pure 211i Max US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
CADR without a named particle type A maker-listed CADR whose particle type is not specified by the cited source. This value is not substituted for a smoke, dust or pollen rating.	Not verified We have not verified this value. It is not a confirmed no or zero. Check the original source or ask the manufacturer if it affects your choice. The source supplies separate particle ratings. Source · 2026-09-12 Blueair: Blue Pure 211i Max US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
Advertised room area The documented room area at the air-change assumption below. Area claims at different ACH are not directly equivalent; check ceiling height and layout.	674 sq ftRead with the stated 4.8 ACH assumption. Source · 2026-09-12 Blueair: Blue Pure 211i Max US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
Room-area air changes Air changes per hour used for the displayed room-area claim. Read this together with room area. Actual airflow depends on placement and operating setting.	4.8 ACH Source · 2026-09-12 Blueair: Blue Pure 211i Max US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
Rated power The documented rated or maximum electrical input, as qualified by the source. Actual energy use depends on the fan setting. Read the source conditions alongside the value.	46 WListed as energy consumption; not a measured all-settings average. Source · 2026-09-12 Blueair: Blue Pure 211i Max US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
App control Whether the listed model supports control through the manufacturer’s app. Check phone requirements, network setup and which controls remain available on the unit.	Yes Source · 2026-09-12 Blueair: Blue Pure 211i Max US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
Standard replacement filter The named replacement for the standard included filter where verified. Match the exact purifier model and distinguish standard filters from optional specialty versions.	Blue Pure 211i Max Particle & Carbon filterThe standard option differs from Allergenblock and Smokeblock filters. Source · 2026-09-12 Blueair: Blue Pure 211i Max US product pageChecked 2026-09-12. We reviewed the official page text on the check date. Checkout options were not verified. Review due. Check the current source before buying.
Questions to check before buying	The purifier-only package is separate from the recurring filter-subscription option.

See what changes

Optional Google Analytics