What size room does the BreatheSmart 75i handle?

Alen rates it for rooms up to 1,400 sq ft. That suits open living areas and large bedrooms.

How often do I replace the filter?

The filter life indicator tells you when to change it. In typical use, expect to replace the HEPA filter roughly every 12 to 15 months.

On low and sleep settings it is quiet enough for a bedroom. Higher fan speeds are noticeably louder.

What is included in the box?

The purifier ships with a HEPA filter installed and a washable pre-filter. No extra filters are needed at setup.

Is $868 a good price?

It is the only new price listed, at ALEN as of November 7, 2026. Compare it with sale prices before buying, since Alen units often discount.

Where is the Alen BreatheSmart 75i cheapest?

At ALEN, for $868.00, as of our latest check.

Alen BreatheSmart 75i

Best price now

$868.00at ALENObserved at 10:42 PM

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Our take on the Alen BreatheSmart 75i

The Alen BreatheSmart 75i is a large-room HEPA air purifier rated for up to 1,400 sq ft, with a Clean Air Delivery Rate of 51. It is built for open living spaces and whole-floor cleaning, with a washable pre-filter and a filter life indicator. Its best new price is $868 at ALEN as of November 7, 2026, the only new price listed.

Best forOpen-plan living rooms and large bedroomsAllergy and pet householdsBuyers who want one unit for a whole floorPeople who prefer a simple, low-maintenance purifier

Pros

Rated for rooms up to 1,400 sq ft, so one unit covers a large space
HEPA filtration with a washable pre-filter that extends filter life
Filter life indicator takes the guesswork out of replacements
Simple controls and quiet operation on lower speeds
Sturdy build for a floor-standing unit

Cons

Alen BreatheSmart 75i prices at every store

ALENNew
In stock
$868.00Free shippingObserved at 10:42 PM
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Alen BreatheSmart 75i price history

Lowest price we've seen: $868.00 on Nov 8 at ALEN. Tracked across 1 store since Nov 8.

What reviewers say

Owners of Alen's large-room purifiers generally praise the cleaning power and quiet low-speed operation. Common complaints are the price of filters and the size of the unit.

What people mention

FiltrationPraisedOwners say it noticeably reduces dust and pet dander in large rooms.
NoiseMixedLow speeds are quiet, but high speeds are loud enough to notice.
Filter costCriticisedReplacement HEPA filters are a recurring expense owners mention.

Questions and answers

What size room does the BreatheSmart 75i handle?: Alen rates it for rooms up to 1,400 sq ft. That suits open living areas and large bedrooms.
How often do I replace the filter?: The filter life indicator tells you when to change it. In typical use, expect to replace the HEPA filter roughly every 12 to 15 months.
Is it loud at night?: On low and sleep settings it is quiet enough for a bedroom. Higher fan speeds are noticeably louder.
What is included in the box?: The purifier ships with a HEPA filter installed and a washable pre-filter. No extra filters are needed at setup.
Is $868 a good price?: It is the only new price listed, at ALEN as of November 7, 2026. Compare it with sale prices before buying, since Alen units often discount.
Where is the Alen BreatheSmart 75i cheapest?: At ALEN, for $868.00, as of our latest check.