What size room does the 75i cover?

Alen rates it for rooms up to 1,400 square feet. That suits a large living room or an open-plan space rather than a single small bedroom.

Does the ionizer have to be on?

No. The ionizer can be switched off, so you can run HEPA filtration alone.

How often do filters need replacing?

Alen's filter life indicator tracks usage and signals when a change is due. Expect replacement roughly every 9 to 12 months with normal use.

Is it quiet enough for a bedroom?

Yes. Low and sleep speeds are quiet, though higher fan speeds are noticeably louder.

Does it work with a smart-home app?

The base 75i does not include app control. Alen sells separate smart-enabled models if app control matters to you.

Is it worth the price over a smaller purifier?

If you need to clean one large room, the coverage and quiet operation justify it. For a small bedroom, a cheaper smaller unit will do the same job.

Alen BreatheSmart 75i Ionic Air Purifier

Last price we saw

$853.00at ALEN, last seen Nov 8

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Our take on the Alen BreatheSmart 75i Ionic Air Purifier

The Alen BreatheSmart 75i is a large-room HEPA air purifier rated for up to 1,400 square feet. It uses a HEPA filter with an optional ionizer and is known for quiet operation and a slim, low-profile cabinet. It suits open living spaces and bedrooms where a single unit must cover a lot of floor area.

Best forOpen-plan living rooms and great roomsLarge master bedroomsAllergy and pet householdsBuyers who want quiet operation at night

Pros

Rated for up to 1,400 sq ft, enough for one large room
HEPA filtration with an ionizer that can be turned off
Quiet on low and sleep settings
Slim cabinet fits against a wall without taking much floor space
Filter life indicator takes the guesswork out of replacements

Cons

High upfront price for a single-room purifier

Alen BreatheSmart 75i Ionic Air Purifier prices at every store

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Alen BreatheSmart 75i Ionic Air Purifier price history

Lowest price we've seen: $853.00 on Nov 8 at ALEN. Tracked across 1 store since Nov 8.

What reviewers say

Owners of large-room Alen purifiers generally report cleaner air and quiet running, especially on low fan speeds. The main complaints center on filter replacement cost and the size of the unit.

What people mention

NoisePraisedOwners say low and sleep speeds are quiet enough for a bedroom.
CoveragePraisedBuyers report it handles large open rooms without running at maximum.
Filter costCriticisedReplacement HEPA filters are a recurring expense owners mention.

Questions and answers

What size room does the 75i cover?: Alen rates it for rooms up to 1,400 square feet. That suits a large living room or an open-plan space rather than a single small bedroom.
Does the ionizer have to be on?: No. The ionizer can be switched off, so you can run HEPA filtration alone.
How often do filters need replacing?: Alen's filter life indicator tracks usage and signals when a change is due. Expect replacement roughly every 9 to 12 months with normal use.
Is it quiet enough for a bedroom?: Yes. Low and sleep speeds are quiet, though higher fan speeds are noticeably louder.
Does it work with a smart-home app?: The base 75i does not include app control. Alen sells separate smart-enabled models if app control matters to you.
Is it worth the price over a smaller purifier?: If you need to clean one large room, the coverage and quiet operation justify it. For a small bedroom, a cheaper smaller unit will do the same job.