Customer reviews from alencorp.com
Alen - BreatheSmart 45i 800 SqFt Air Purifier with Fresh HEPA Filter for Allergens, Dust, Odors & Smoke - White
Average customer rating
4.8
(1,377 Reviews)
Rating breakdown 1,377 reviews
5 Stars
1,241
4 Stars
92
3 Stars
25
2 Stars
9
1 Star
10
Customer Reviews for Alen - BreatheSmart 45i 800 SqFt Air Purifier with Fresh HEPA Filter for Allergens, Dust, Odors & Smoke - White
Customer Rating
5
Alen 45I
on February 10, 2026
Posted by: Jacob D.
The filter showed up fast, the sensor helped me to pin point the source of the pollutant by referencing the charts in the app
Written by a customer while visiting alencorp.com
Customer Rating
5
The best!
on February 2, 2026
Posted by: Anastasia
[This review was collected as part of a promotion.] The best air purifier on the market! My main goal was to get rid of cooking smells, and this filter does the job perfectly.
I also tested it at my workplace, where mildew had occurred, so the space could be safely occupied before construction. Thanks to this air purifier, the air was clean - no smell and no symptoms from the mildew. I’ll definitely be getting another one for my bedroom and workspace.
Written by a customer while visiting alencorp.com
Customer Rating
5
Changer for My Living Room!
on January 17, 2026
Posted by: Crystal
[This review was collected as part of a promotion.] We use the Alen i45 in our living room and have been extremely happy with it. It runs quietly, looks great in the space, and noticeably improves air quality. The air feels cleaner and fresher, and it’s made a real difference with dust and everyday odors. Setup was quick and easy, and it’s been reliable ever since. Highly recommend for anyone wanting effective, low-maintenance air purification.
Written by a customer while visiting alencorp.com
Customer Rating
5
45i Purifiers
on January 9, 2026
Posted by: N
I bought two of them. I recommend the odor filter, too.
Written by a customer while visiting alencorp.com
Customer Rating
3
Good purifiers
on January 9, 2026
Posted by: Brian D.
We have 5 of the Flex Purifiers. We like them all. They are quiet, have a good exchange rate, and a good design. I have to give 3 stars because they just stopped offering the VOC/Smoke filters which have the most carbon. This was one of the reasons we bought so many purifiers from this company. So, we are disappointed by that change. I hope they bring them back at some point.
Written by a customer while visiting alencorp.com
Customer Rating
5
Good
on November 23, 2025
Posted by: Scott
I purchased the Alen BreatheSmart 45 for our master bedroom and it has been excellent so far. It’s powerful enough to handle the space, and within a short time we noticed the air quality feels much better—cleaner, fresher, and overall more comfortable. The unit runs quietly, even on higher settings, and the design blends in nicely with the room.
Overall, I’m very happy with this purifier. It does exactly what it promises and has made a noticeable difference in our home’s air quality. Highly recommend!
Written by a customer while visiting alencorp.com
Customer Rating
5
Amazing product
on November 21, 2025
Posted by: William
It was one of the best purchases i made, it helped made the room feel more purified and fresh throughout the day. Will definitely purchase more of these products and put it around my home.
Written by a customer while visiting alencorp.com
Customer Rating
5
Works great
on November 13, 2025
Posted by: ALH
The auto dimmer on the lights does not work, but other than that I love it.
Written by a customer while visiting alencorp.com