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Customer Ratings & Reviews

Your price for this item is $428.99

Customer reviews

Rating 4.5 out of 5 stars with 24 reviews

Rating Filter

Rating by feature

  • Value

    Rating 4.2 out of 5 stars

  • Quality

    Rating 4.5 out of 5 stars

  • Ease of Use

    Rating 4.7 out of 5 stars

Pros mentioned filter

Cons mentioned filter

88%would recommend to a friend

Customers are saying

Customers praise the BreatheSmart 45i 800 SqFt Air Purifier for its quiet operation, especially on lower speeds. Many users have also noticed an improvement in their allergies after using the air purifier. However, some customers have mentioned that the air purifier can be noisy when it is in high mode.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 1 Showing 1-20 of 24 reviews
  • Pros mentioned:
    Design, Ease of use, Filter life

    Rated 5 out of 5 stars

    Perfect air purifier

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    Posted . Owned for less than 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Easy to set up, quiet, sleek, medical grade hepa filter, lots of color options, user friendly. I chose the weqthered gray because it matched perfectly with my furniture!

    I would recommend this to a friend
  • Pros mentioned:
    Air quality, Design, Filter life

    Rated 5 out of 5 stars

    No regrets!

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I didn’t think I’d like its graphite design but if it turned out fitting nicely with my home. Setup is very easy. No hassle or programming. I love that it has a colored-light system to indicate the level of air quality in the room. I also love that it not only has a true HEPA but an activated carbon filter as well! Full coverage! Better peace of mind now. Before the air purifier, my home had this strong aromatic scent. It wasn’t a problem. In fact, my friends say it smelled good in my apt. But after the using the air filter, the aroma is gone. I sort of miss it. But I’m not too bummed… My home feels so much fresher!

    I would recommend this to a friend
  • Pros mentioned:
    Design, Noise level

    Rated 5 out of 5 stars

    works great to get the job done quickly

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    quiet, works efficiently. Very big but attractive design. Works to clear out smoke smell and other unpleasant smells in older home with pets

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    great purifier

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    im so glad I decided to get this product when I did, not only is it helping keep my house cleaner and fresher from odors but it also helped regulate the air quality this week from the forest fires I wouldn't have even known how poor the air quality was until the machine was on red and purple mode for hours only then did I realize there was a haze out my window and I was having trouble seeing the Las Vegas strip from my room if you have pets or seem to just have musty odors then this product will help a lot instead of just covering the issue with scents and fragrances which can be just as harmful

    I would recommend this to a friend
  • Pros mentioned:
    Air quality, Ease of use

    Rated 5 out of 5 stars

    Highly Recommended!

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Easy to set up and does an excellent job. Perfect for a 700+ sq.ft apartment!

    I would recommend this to a friend
  • Pros mentioned:
    Air quality, Noise level

    Rated 5 out of 5 stars

    Works great

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The unit runs very quietly. Air feels much better. Looks nice in the room. Beat product packaging I have seen

    I would recommend this to a friend
  • Pros mentioned:
    Air quality, Noise level

    Rated 5 out of 5 stars

    Small but very powerful and efficient

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    Posted . Owned for 6 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is my fifth purchase of Allen air purifier models. They run quiet yet very effective in cleaning the air.

    I would recommend this to a friend
  • Pros mentioned:
    Filter life

    Rated 5 out of 5 stars

    Best Air Purifier

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I took time to read all the online and YouTube reviews for HEPA Air Purifiers. This one really stood out. There are also multiple filter options from the manufacturer which was a big plus. There are several face plates available so it can blend with your home's design. The filter assembly is also very tightly sealed which acknowledges the whole HEPA aspect of this Air Purifier.

    I would recommend this to a friend
  • Pros mentioned:
    Air quality

    Rated 5 out of 5 stars

    Great product

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great product!!! Have two inside dogs and a gas stove, cleared up all inpurities almost instantly "2 hours of setting it up you'll notice a huge difference".

    I would recommend this to a friend
  • Pros mentioned:
    Air quality, Noise level

    Rated 5 out of 5 stars

    Must buy

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Super quiet and nice to see color change depending on air quality.

    I would recommend this to a friend
  • Best Buy Employee

    Rated 5 out of 5 stars

    Consumer reports says that the Alen's are the best

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    Best Buy Employee
    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I don't know too much about air purifiers so this was one time I defaulted to consumer reports to guide me and they say that the Alen brand air purifiers are the best out of like 50 brands that they tested and I really don't have anything to compare it to however my kids allergies are better and I would say we have a 40 to 50% reduction in dust lying on various surfaces around the house.

    I would recommend this to a friend
  • Pros mentioned:
    Filter life

    Rated 5 out of 5 stars

    Top End Class and Function

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    Posted . Owned for 11 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Classy looking and effective air purifier. Lasts longer than other purifiers before a filter change is needed. Able to fit into tighter spaces than most other models.

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    Alen air purifier

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    Posted . Owned for 3 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works well so far. First model sent was a repackaged return even though ordered as new -- even had last delivery information in the box. Returned and second delivery was new and works well.

    I would recommend this to a friend
  • Pros mentioned:
    Air quality, Filter life

    Rated 5 out of 5 stars

    Liked it so much, bought another one this year!

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    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    No complaints! Runs well and has cut the pollen and dust down where we sleep. One still needs to vacuum off the dirt from the pre-filter every 2 weeks. First Filter from the Alen Subscription arrived this week. Old filter is still doing well for being 12 months old.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Great for pollen season!

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    We have had an early pollen season and a heavy pollen season. It has made a huge difference in my allergies.

    I would recommend this to a friend
  • Pros mentioned:
    Air quality

    Rated 5 out of 5 stars

    clean air

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    very good product, description says what it is. air very clean

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Air purifier

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Excellent product..very easy to use and works great

    I would recommend this to a friend
  • Pros mentioned:
    Air quality

    Rated 3 out of 5 stars

    quiet????

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Not as quiet as led to believe. Acceptable noise level only at minimum speed but still noticeable Does a good job of keeping air fresh

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Qualities aren't seen/touched but felt with the he

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Simply summarize product:Best unit in comparison to all competitors

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Great air purifier

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is what you would expect. Air noise when it is in high. Quiet on the lower speeds. Quite happy. My daughter loves it.

    I would recommend this to a friend
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