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Deal.ai › Air Purifiers
Alen
Alen BreatheSmart 75i True HEPA Air Purifier

Alen BreatheSmart 75i True HEPA Air Purifier

Best price now

$799.00at ALENObserved at 10:42 PM

Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Our take on the Alen BreatheSmart 75i True HEPA Air Purifier

The Alen BreatheSmart 75i is a large-room True HEPA air purifier rated for up to 1,300 sq ft, with a 347 CFM clean air delivery rate and five fan speeds. It runs at up to 49 dB and draws about 45 W, and its flat front panel takes Alen's snap-in filter cartridges, including HEPA and odor or smoke variants. At $799 at ALEN as of November 7, 2026, it sits at the top of its recent range; Alen purifiers of this size have sold for less during sales, so it is not a bargain price.

Best forOpen-plan living rooms and large bedroomsAllergy and asthma householdsBuyers who want a quiet sleep modePet owners dealing with dander and odor
Pros
  • High 347 CFM CADR for its size class
  • Covers up to 1,300 sq ft on paper
  • Five speeds with a genuinely quiet low setting
  • Simple filter swaps through the front panel
  • Low 45 W draw at typical speeds
Cons
  • $799 is full list price, not a deal
  • Filters are proprietary and cost more than generic HEPA
  • 49 dB max is audible in a bedroom
  • Bulky 27-inch-tall cabinet needs floor space

Alen BreatheSmart 75i True HEPA Air Purifier prices at every store

  • ALENNew

    In stock

    $799.00Free shippingObserved at 10:42 PM
    Visit ALEN
  • Best BuyNew

    Out of stock

    $807.99Free shippingObserved at 10:42 PM
    Visit Best Buy

Store links may earn us a commission. Some prices via Klarna.

Alen BreatheSmart 75i True HEPA Air Purifier price history

Lowest price we've seen: $799.00 on Nov 8 at ALEN. Tracked across 2 stores since Nov 8.

What reviewers say

Owners of the 75i generally rate it highly for cleaning large rooms and for its quiet low speeds. The recurring complaints are filter cost and the price of the unit itself.

What people mention
  • FiltrationPraisedOwners report less dust and fewer allergy symptoms in large open rooms.
  • NoiseMixedLow and medium speeds are near-silent, but the top speeds are clearly audible.
  • Filter costCriticisedReplacement cartridges are proprietary and cost more than third-party HEPA filters.
  • BuildPraisedThe cabinet feels solid and the front-loading filter door is easy to use.
  • ValueCriticisedBuyers say the unit is pricey at list and worth waiting for a sale.

Specifications

Filter Included
YesSource
Width (")
18.5Source
Fan Speed Levels
5Source
Height (")
27.0Source

Questions and answers

Is the 75i big enough for an open living room?
Alen rates it for up to 1,300 sq ft, and its 347 CFM CADR supports that in open spaces. For very large or divided rooms, one unit per zone works better.
How often do I need to replace the filter?
Alen recommends a new filter roughly every 12 months with continuous use. The unit's filter indicator tells you when to swap it.
Is it quiet enough to sleep next to?
On low and medium speeds it is quiet enough for most bedrooms. At the top speed it reaches 49 dB, which is noticeable.
What filters fit the 75i?
It uses Alen's BreatheSmart 75i cartridges, including the standard HEPA and the FreshPlus and Smoke variants. Generic HEPA pads do not fit.
Is $799 a good price?
That is list price at ALEN as of November 7, 2026. The 75i has dropped below this during sales, so it is not a standout deal.
Does it remove odors and smoke?
The standard HEPA filter handles particles. For smoke and odors, choose the carbon-equipped FreshPlus or Smoke filter.
Where is the Alen BreatheSmart 75i True HEPA Air Purifier cheapest?
At ALEN, for $799.00, as of our latest check.
Where can I buy the Alen BreatheSmart 75i True HEPA Air Purifier?
2 stores we checked sell it, including ALEN, Best Buy.

Stores we've priced the Alen BreatheSmart 75i True HEPA Air Purifier at

  • Best Buy deals and prices
Noise Level (max) (dB)
49Source
Filter Type
HEPA Filter, Dust FilterSource
Functions
Air PurificationSource
Depth (")
11.5Source
Operating Area (sq. ft) (sqft)
1300.0Source
Energy Consumption (W)
45Source
Clean Air Delivery Rate
347.0Source