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 Protect 7470i
Find the differences that matter for your next decision.
Blueair
Blueair Protect 7470i
Air purifiers
$649List 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 Alen BreatheSmart 75i Large Room Air Purifier.
- Leads 4 of 5 rankable overall specs; Blueair Protect 7470i takes 1.
- CADR: 350 CFM across Smoke, Dust, Pollen vs 270 CFM
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.
Coverage area: 1,400 sq ft vs 1,035 sq ft
Blueair Protect 7470i is $100 cheaper. Pay the difference only if cadr matters to you.
The trade-off to know
Alen BreatheSmart 75i Large Room Air Purifier: High initial investment
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 Protect 7470i |
|---|---|---|
| CADRPerformance | 350 CFM across Smoke, Dust, Pollen | 270 CFM (Smoke), 275 CFM (Dust), 280 CFM (Pollen) |
| Room sizePerformance | Large master suites, open living rooms, offices | Master bedrooms, living areas up to 418 sq ft (5 ACH) |
| Coverage areaPerformance | 1,400 sq ft (2 air changes/hr) / 700 sq ft (4 air changes/hr) | 1,035 sq ft (2 air changes/hr) / 418 sq ft (5 air changes/hr) |
| Filter typesFilters | Medical-grade H13 True HEPA + Antimicrobial layer + Heavy Odor Carbon | SmartFilter with Smart RFID chip (HEPASilent Ultra + Activated Carbon) |
| Filter lifeFilters | 12–15 months extra long filter life | 6–12 months with real-time algorithm filter tracking |
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 Protect 7470i
Reasons to choose it
- HEPASilent Ultra electrostatic + mechanical filtration kills 99% of germs
- SpiralAir omnidirectional airflow distributes clean air evenly
- Premium matte build with intuitive LCD air quality touchscreen
Worth considering
- SmartFilter replacements are relatively costly
- Heavier metallic construction
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 Protect 7470i
3-Year Estimated Total$889
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 Protect 7470i?
Blueair Protect 7470i costs $100 less at list price.
What is the biggest catch with the Alen BreatheSmart 75i Large Room Air Purifier or Blueair Protect 7470i?
Both has this deal-breaker: over 25 lb (11 kg). Hard to move between rooms.
Which is better for bedrooms, the Alen BreatheSmart 75i Large Room Air Purifier or the Blueair Protect 7470i?
Tied on bedrooms. Blueair Protect 7470i is cheaper. The 2 rankable bedrooms specs split 1 to 1. Saves $100 at list price.
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.