Head to head

Blueair Blue Pure 211+ Auto vs Honeywell HPA300 HEPA Air Purifier

Blueair Blue Pure 211+ Auto leads 5 to 1 on the 6 rankable specs, but Honeywell HPA300 HEPA Air Purifier costs $90 less.

Catalog as of September 1, 2026

Why, in numbers

CADR: Blueair Blue Pure 211+ Auto lists 353 CFM (Smoke), 347 CFM (Dust), 380 CFM (Pollen) (Blueair sheet, 2026-09-02); Honeywell HPA300 HEPA Air Purifier lists 300 CFM (Smoke), 320 CFM (Dust), 300 CFM (Pollen) (Honeywell sheet, 2026-09-02).
Coverage area: Blueair Blue Pure 211+ Auto lists 550 sq ft (4.8 air changes/hr) / 1,320 sq ft (2 air changes/hr) (Blueair sheet, 2026-09-02); Honeywell HPA300 HEPA Air Purifier lists 465 sq ft (4.8 air changes/hr) / 2,250 sq ft (1 air change/hr) (Honeywell sheet, 2026-09-02).
Room size: Blueair Blue Pure 211+ Auto lists Large living rooms, open floor plans, master suites (Blueair sheet, 2026-09-02); Honeywell HPA300 HEPA Air Purifier lists Extra large rooms, master suites, open spaces up to 465 sq ft (4.8 ACH) (Honeywell sheet, 2026-09-02).
Filter types: Blueair Blue Pure 211+ Auto lists Washable fabric pre-filter + HEPASilent main filter (Particle + Carbon) (Blueair sheet, 2026-09-02); Honeywell HPA300 HEPA Air Purifier lists Type A Activated Carbon Pre-filter + 3× Type R True HEPA filters (Honeywell sheet, 2026-09-02).
Filter life: Blueair Blue Pure 211+ Auto lists 6 months (Blueair sheet, 2026-09-02); Honeywell HPA300 HEPA Air Purifier lists 3 months (Pre-filter) / 12 months (True HEPA filters) (Honeywell sheet, 2026-09-02).

Manufacturer list price, not a live offer. Confirm current pricing before you buy.

Blueair Blue Pure 211+ Auto

$3395 spec wins

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Honeywell HPA300 HEPA Air Purifier

$2491 spec win

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Buying for

Every rankable spec counts once. Pick a lens to score only what matters for your air purifier.

Straight answer

Overall: 5 to 1

Buy the Blueair Blue Pure 211+ Auto.

Leads 5 of 6 rankable overall specs; Honeywell HPA300 HEPA Air Purifier takes 1.
CADR: 353 CFM vs 300 CFM
Coverage area: 550 sq ft vs 465 sq ft
Honeywell HPA300 HEPA Air Purifier is $90 cheaper. Pay the difference only if cadr matters to you.

Check first: the Blueair Blue Pure 211+ Auto has no Wi-Fi app. Tick them under deal-breakers if that rules it out.

5 Blueair Blue Pure 211+ Auto6 rankable of 11 specsHoneywell HPA300 HEPA Air Purifier 1

Deal-breakers

tick what would make you walk away

No Wi-Fi approw
No schedules or remote control from your phone.
Trips:Blueair Blue Pure 211+ Auto · One-touch Auto ModeClear:Honeywell HPA300 HEPA Air Purifier · No (manual touch controls with 2/4/8 hr…
Over 55 dB on highrow
Louder than normal conversation at full speed.
Trips:Blueair Blue Pure 211+ Auto · 23 dB (Low) – 56 dB (Turbo high)Trips:Honeywell HPA300 HEPA Air Purifier · 38 dB (Low) – 58 dB (Turbo)
Under 1,000 sq ft coveragerow
Undersized for an open-plan living area.
Trips:Blueair Blue Pure 211+ Auto · 550 sq ftTrips:Honeywell HPA300 HEPA Air Purifier · 465 sq ft

At a glance

The handful of numbers that decide most purchases in this category.

2 of 2 differ

CADR

Blueair

353 CFM (Smoke), 347 CFM (Dust), 380 CFM (Pollen)

Honeywell

300 CFM (Smoke), 320 CFM (Dust), 300 CFM (Pollen)

Coverage area

Blueair

550 sq ft (4.8 air changes/hr) / 1,320 sq ft (2 air changes/hr)

Honeywell

465 sq ft (4.8 air changes/hr) / 2,250 sq ft (1 air change/hr)

True 3-Year Cost of Ownership (TCO)

Upfront price + 3 years of consumables, fees & essential add-ons

Blueair Blue Pure 211+ Auto

Upfront list price$339

3-Yr Foldable Particle+Carbon filter (Every 6 months (~$45/yr))+$135

3-Year Estimated Total$474

Honeywell HPA300 HEPA Air Purifier

Upfront list price$249

3-Yr 3x HRF-R3 HEPA + 4x Pre-filters (Annual full filter set (~$65/yr))+$195

3-Year Estimated Total$444

Room Placement & Bedroom Noise Check

Physical clearance required for airflow, wall placement, and bedroom noise levels.

Ergonomic & Spatial Check

Wall Clearance Required

Cylindrical 360° filters cannot sit flush against walls without choking intake.

Blueair

Requires 12 in perimeter airflow space

Honeywell

Front grille intake: can back up close to baseboards

Nighttime Sleep Mode Noise

Levels below 25 dB are virtually silent for light sleepers.

Blueair

Standard sleep speed

Honeywell

30 dB lowest fan speed (noticeable background white noise)

Unit Footprint & Dimensions

Blueair

Standard room purifier footprint

Honeywell

Large commercial-grade shell (20.8 × 22.3 × 10.8 in; 17.0 lb)

The 90-Day Owner Regret Check

Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.

Post-Purchase Truths

Blueair: What to watch for

Maintenance
Requires periodic filter replacements to maintain airflow and odor capture.
Activated carbon and HEPA media gradually saturate, needing replacement once or twice yearly depending on air pollution and pet shedding.

Honeywell: What to watch for

Maintenance
Requires periodic filter replacements to maintain airflow and odor capture.
Activated carbon and HEPA media gradually saturate, needing replacement once or twice yearly depending on air pollution and pet shedding.

Blueair Blue Pure 211+ Auto$3395 wins

Honeywell HPA300 HEPA Air Purifier$2491 win

Performance Filters Usability & Smart Design & Ownership

11 of 11 attributes differ. Identical rows are dimmed.

Performance

leads 2-0

Performance specifications. Middle column is Blueair Blue Pure 211+ Auto, right column is Honeywell HPA300 HEPA Air Purifier.
CADR	353 CFM (Smoke), 347 CFM (Dust), 380 CFM (Pollen) (wins this row: higher)	300 CFM (Smoke), 320 CFM (Dust), 300 CFM (Pollen)
Room size	Large living rooms, open floor plans, master suites	Extra large rooms, master suites, open spaces up to 465 sq ft (4.8 ACH)
Coverage area	550 sq ft (4.8 air changes/hr) / 1,320 sq ft (2 air changes/hr) (wins this row: higher)	465 sq ft (4.8 air changes/hr) / 2,250 sq ft (1 air change/hr)

Filters

leads 1-0

Filters specifications. Middle column is Blueair Blue Pure 211+ Auto, right column is Honeywell HPA300 HEPA Air Purifier.
Filter types	Washable fabric pre-filter + HEPASilent main filter (Particle + Carbon)	Type A Activated Carbon Pre-filter + 3× Type R True HEPA filters
Filter life	6 months (wins this row: higher)	3 months (Pre-filter) / 12 months (True HEPA filters)

Usability & Smart

leads 1-0

Usability & Smart specifications. Middle column is Blueair Blue Pure 211+ Auto, right column is Honeywell HPA300 HEPA Air Purifier.
Noise levels	23 dB (Low) – 56 dB (Turbo high) (wins this row: lower)	38 dB (Low) – 58 dB (Turbo)
Energy consumption	38 W max power consumption	130 W max power consumption
Smart features	One-touch Auto Mode (no Wi-Fi app)	No (manual touch controls with 2/4/8 hr auto-off timer)
Air quality sensors	Integrated particle sensor with 3-color air quality LED indicator	No automated air quality sensors (filter replacement indicators)

Design & Ownership

2 differences

Design & Ownership specifications. Middle column is Blueair Blue Pure 211+ Auto, right column is Honeywell HPA300 HEPA Air Purifier.
Weight	12.5 lb (5.7 kg) (wins this row: lower)	17.0 lb (7.7 kg)
Warranty	2 years (with product registration)	5 years manufacturer limited warranty (wins this row: higher)

Most rows are from the official spec sheet. Marked rows are other published figures or our summary, not lab tests we ran.

Blueair Blue Pure 211+ Auto source Honeywell HPA300 HEPA Air Purifier source

Which one should you buy

Pick this one if

Blueair Blue Pure 211+ Auto

High-capacity large-room air purifier with 360-degree HEPASilent filtration and machine-washable fabric pre-filters.

High 353 CFM CADR cleans a 550 sq ft living room in just 12.5 minutes
HEPASilent electrostatic + mechanical filtration maximizes airflow and efficiency
Interchangeable washable fabric pre-filters in multiple designer colors

What you give up

No mobile app or Wi-Fi schedule controls (one-button operation)
Reaches 56 dB at highest turbo fan setting

Full Blueair Blue Pure 211+ Auto specs →

Pick this one if

Honeywell HPA300 HEPA Air Purifier

Extra-large room True HEPA air purifier with Turbo Clean mode, dual-stage filtration, and AHAM Verifide CADR ratings for large rooms.

Powerful high-volume CADR (300+ CFM) for large rooms up to 465 sq ft
Certified True HEPA captures 99.97% of airborne particles
Durable workhorse build with touch-button controls

What you give up

High power consumption (up to 130W on Turbo)
No Wi-Fi app or smart automated air quality sensors

Full Honeywell HPA300 HEPA Air Purifier specs →

Best for each use

Bedrooms

Quiet nights: low-speed noise, sleep mode, schedules from your phone

For bedrooms, buy the Blueair Blue Pure 211+ Auto.

Leads 2 of 2 rankable bedrooms specs.
Noise levels: 23 dB vs 38 dB
Weight: 12.5 lb vs 17.0 lb
Honeywell HPA300 HEPA Air Purifier is $90 cheaper. Pay the difference only if noise levels matters to you.

Big rooms & allergies

Open-plan rooms or allergies: CADR, coverage, filter grade

For big rooms & allergies, buy the Blueair Blue Pure 211+ Auto.

Leads 3 of 3 rankable big rooms & allergies specs.
CADR: 353 CFM vs 300 CFM
Coverage area: 550 sq ft vs 465 sq ft
Honeywell HPA300 HEPA Air Purifier is $90 cheaper. Pay the difference only if cadr matters to you.

Low running cost

Cheap to own: filter life, power draw, warranty

Tied on low running cost. Honeywell HPA300 HEPA Air Purifier is cheaper.

The 2 rankable low running cost specs split 1 to 1.
Saves $90 at list price.

Every answer above is scored from published figures. A lens uses only the rows that matter for that use, including marked rows that are not on the official sheet. Switch lenses interactively in the panel above.

Done deciding?

Open the full standalone spec sheet for either device.

Blueair Blue Pure 211+ Auto spec sheet Honeywell HPA300 HEPA Air Purifier spec sheet

Manufacturer pages: Blueair Blue Pure 211+ Auto ↗ · Honeywell HPA300 HEPA Air Purifier ↗

Common questions

Which is cheaper, the Blueair Blue Pure 211+ Auto or the Honeywell HPA300 HEPA Air Purifier?

Honeywell HPA300 HEPA Air Purifier costs $90 less at list price.

What is the biggest catch with the Blueair Blue Pure 211+ Auto or Honeywell HPA300 HEPA Air Purifier?

Blueair Blue Pure 211+ Auto has this deal-breaker: no Wi-Fi app. No schedules or remote control from your phone.

Which is better for bedrooms, the Blueair Blue Pure 211+ Auto or the Honeywell HPA300 HEPA Air Purifier?

For bedrooms, buy the Blueair Blue Pure 211+ Auto. Leads 2 of 2 rankable bedrooms specs. Noise levels: 23 dB vs 38 dB

What cannot be compared from spec sheets?

Of the 11 specs tracked here, 5 are descriptive and cannot be ranked on numbers alone. Spec sheets also cannot measure subjective factors like build quality, real-world performance, or comfort.

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