
Alen
#16 of 18 air purifiers tested
What the product listing won't tell you
Know before you buy
With the default Pure filter the 75i has no activated carbon, so it cannot remove odors, smoke, or chemical gases, and its clean-air rate supports a room of about 450 sq ft rather than the advertised 2,600.
Your main concern is allergens and dust, and you want quiet, genuine H13 HEPA filtration for one large room
Alen
Alen BreatheSmart 75i
Alen
Alen BreatheSmart 75i
$799.00
We may earn a commission. It doesn't affect our scores.
You will run it in a room around 450 square feet rather than relying on the headline 2,600 sq ft figure
A quiet bedroom or nursery matters, since it is very soft on its sleep setting
You are comfortable buying the separate carbon filter later if you ever need odor or smoke control
You value CARB certification and the option to switch the ionizer off entirely
You need to remove odors, smoke, or chemical gases, since the included Pure filter has no carbon to do that
You want to clean a whole open-plan space on the strength of the 2,600 sq ft claim
Housing material transparency matters to you, as the plastic composition is not disclosed
You prefer a purifier with no ionizer component at all
Specs the product listing doesn't explain
What your food and family come into contact with every use
Ease of use, maintenance, and longevity
See exactly what's in this air purifier
Free account unlocks full material breakdown, safety test results, and spec details.
3 criteria - open any layer to see exactly what we found
The scoring rationale is locked
Free account unlocks exactly why this product scored the way it did.
Verified retailer - current pricing
Starting price
$799
We earn a small commission on purchases. It never influences our scores - R3 is funded by readers, not brands.
Not sure the Alen BreatheSmart 75i is right for you?
Free account shows you which alternatives passed our safety screen and what trade-off each one makes.
See safer alternatives for freeNo credit card. Takes 30 seconds.
Already have an account? Sign inThe Alen BreatheSmart 75i was graded against the same air purifier-specific rubric we apply to every product in this category — no brand-by-brand exceptions, no sponsored placements, no affiliate-weighted scores. The verdict above came from three pillars: safety (materials, certifications, recall history, chemical exposure pathways), efficacy (independent testing data, verified performance specs, real-world usage durability), and usability (ergonomics, cleaning, noise, parts availability over time). Every point deduction has a citation behind it. Every claim links back to a primary source. Nothing is hidden behind opaque badges.
What separates this from a typical air purifier review elsewhere on the web: we don't accept sponsorships, paid placements, or rev-share-weighted rankings. The brand of the Alen BreatheSmart 75icannot pay to move up the list. The score is logic-driven (a weighted formula across safety, efficacy, and usability), not opinion-driven, so an editor's personal preference cannot override the evidence. When two products in this category are within a point of each other, the right tie-breaker is whichever pillar matters most to your household — not whichever one ranks first.
A high safety score on the Alen BreatheSmart 75idoesn't automatically mean “buy this.” A air purifierthat's genuinely safe but loses points on efficacy may still be the wrong fit if performance is what you actually need. Conversely, a air purifierthat's usability-strong but safety-flagged probably isn't the right call for a child with a known sensitivity. The score is the start of the decision, not the end.
R3 is not a medical, legal, or financial advisor. This review is general consumer-safety reporting, not personalized health guidance. If a safety concern on this page intersects with a specific allergy, sensitivity, or medical condition in your household, talk to your pediatrician or a board-certified specialist — they can weigh the evidence against your family's situation in a way no review can. We'll update this page when credible new evidence changes the picture (a recall, a new lab certification, a meaningful product redesign); the last-updated date in the byline is the source of truth on how current this analysis is.
#16 of 18 air purifiers reviewed
Did the Alen BreatheSmart 75i pass our safety screen?
Free account unlocks the full verdict, pillar scores, spec values, and which other air purifiers made our list.
The scoring rationale is locked
Free account unlocks exactly why this product scored the way it did.
The scoring rationale is locked
Free account unlocks exactly why this product scored the way it did.