Alen
Alen BreatheSmart 75i Large Room Air Purifier
Air purifiers
$749List price
Explore this product Your shortlist, side by side
Alen BreatheSmart 75i Large Room Air Purifier vs Blueair Blue Pure 211+ Auto
Find the differences that matter for your next decision.
Blueair
Blueair Blue Pure 211+ Auto
Air purifiers
$339List price
Explore this product What matters most to you?
Start with all rankable specifications, or focus on a particular use.
Your starting point
Buy the Blueair Blue Pure 211+ Auto.
- Leads 3 of 5 rankable overall specs; Alen BreatheSmart 75i Large Room Air Purifier takes 2.
- CADR: 353 CFM vs 350 CFM across Smoke, Dust, Pollen
How we reached this
We compare the published specifications relevant to your priority. Each rankable specification counts once; your selected requirements can rule a product out. This is a guide to the numbers, not a laboratory performance score.
Noise levels: 23 dB vs 25 dB
It is also $410 cheaper.
The trade-off to know
Check first: the Blueair Blue Pure 211+ Auto has no Wi-Fi app. the Blueair Blue Pure 211+ Auto has over 55 dB on high. the Blueair Blue Pure 211+ Auto has under 1,000 sq ft coverage. Tick them under deal-breakers if that rules it out.
Look at the differences ↓Refine your requirements
What would rule one out?
Side by side
The differences, in detail.
Start with the key specs, then explore as much as you need.
| What you’re comparing | Alen BreatheSmart 75i Large Room Air Purifier | Blueair Blue Pure 211+ Auto |
|---|---|---|
| CADRPerformance | 350 CFM across Smoke, Dust, Pollen | 353 CFM (Smoke), 347 CFM (Dust), 380 CFM (Pollen) |
| Room sizePerformance | Large master suites, open living rooms, offices | Large living rooms, open floor plans, master suites |
| Coverage areaPerformance | 1,400 sq ft (2 air changes/hr) / 700 sq ft (4 air changes/hr) | 550 sq ft (4.8 air changes/hr) / 1,320 sq ft (2 air changes/hr) |
| Filter typesFilters | Medical-grade H13 True HEPA + Antimicrobial layer + Heavy Odor Carbon | Washable fabric pre-filter + HEPASilent main filter (Particle + Carbon) |
| Filter lifeFilters | 12–15 months extra long filter life | 6 months |
Showing 5 of 11 specifications. Missing values stay unlisted. About the sources
Both sides of the decision
What you gain. What you give up.
Alen BreatheSmart 75i Large Room Air Purifier
Reasons to choose it
- Industry-exclusive transferable Lifetime Warranty
- Tuned pink noise frequencies promote deeper sleep on WhisperMax mode
- Medical-grade H13 True HEPA filter lasts up to 15 months
Worth considering
- High initial investment
- Tall tower profile
Blueair Blue Pure 211+ Auto
Reasons to choose it
- 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
Worth considering
- No mobile app or Wi-Fi schedule controls (one-button operation)
- Reaches 56 dB at highest turbo fan setting
Beyond the spec sheet
Living with your choice.
Explore the ownership details available for this pair.
What three years could cost
Alen BreatheSmart 75i Large Room Air Purifier
3-Year Estimated Total$1,046
Blueair Blue Pure 211+ Auto
3-Year Estimated Total$474
Everyday ownership notes
Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.
Alen: What to watch for
- Maintenance
Requires periodic filter replacements to maintain airflow and odor capture.
Blueair: What to watch for
- Maintenance
Requires periodic filter replacements to maintain airflow and odor capture.
Know what’s behind the comparison
Published specs. Visible sources.
Clinchmark compares manufacturer specifications and other published information. We have not independently lab-tested these products. Editorial assessments and unknown values are identified in the specification details.
Catalog snapshot: September 1, 2026. Prices, availability, and provider terms can change.
Still weighing it up?
Which is cheaper, the Alen BreatheSmart 75i Large Room Air Purifier or the Blueair Blue Pure 211+ Auto?
Blueair Blue Pure 211+ Auto costs $410 less at list price.
What is the biggest catch with the Alen BreatheSmart 75i Large Room Air Purifier or Blueair Blue Pure 211+ Auto?
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 Alen BreatheSmart 75i Large Room Air Purifier or the Blueair Blue Pure 211+ Auto?
For bedrooms, buy the Blueair Blue Pure 211+ Auto. Leads 2 of 2 rankable bedrooms specs. Noise levels: 23 dB vs 25 dB
What cannot be compared from spec sheets?
Of the 11 specs tracked here, 6 are descriptive and cannot be ranked on numbers alone. Spec sheets also cannot measure subjective factors like build quality, real-world performance, or comfort.