Alen (brand store)white $799
Shippingabout 3–7 days
Returns–
Alen BreatheSmart 75i
No lab has tested it yet, so it is not in our ranking.
Is the Alen BreatheSmart 75i right for your home? Find out in 7 questions →
Before you buy, compare it with 2 recommended alternatives
Beside it, two models on sale today that come closest to it on score and price, with the same kind of station where we have them.
Green is the best of these 3, also when they share the lead.
| This model Alen BreatheSmart 75i | Higher score, 72% cheaper Blueair Blue Pure 311i+ Max Best on 1 fact | Higher score, 71% cheaper Blueair Blue Pure 311i Max Best on 1 fact | |
|---|---|---|---|
| Price and ranking | |||
| Lowest price | $799Alen (brand store) | $224Blueair (brand store) best | $229Blueair (brand store) |
| Score | not in our ranking | ||
| Rank | – | rank 2 of 9 for open-plan spaces | rank 1 of 9 for open-plan spaces |
| Customer rating | – | – | – |
| Station | |||
| Room size same on all | open-plan spaces | open-plan spaces | open-plan spaces |
| Size, noise and age | |||
| Height lower is better | – | 21 in (53.3 cm) | 19 in (48.3 cm) best |
| On the market since | August 2018 | April 2025 | December 2024 |
Facts as the maker states them. A dash means the maker does not name it. Each model’s page gives the source of every fact. Noise is the maker’s own figure, so we do not judge it, and a customer rating only counts from 20 reviews.
Prices per store
On October 15, 2026 the lowest price for the Alen BreatheSmart 75i is $799 at Alen (brand store), shipping to the United States included.
All prices include shipping to the United States. Sales tax is added at checkout. We may earn a commission when you buy through these links. It never changes our ranking.
Alen (brand store)white Alen (brand store)black $838
Shippingabout 3–7 days
Returns–
Alen (brand store)brown $838
Shippingabout 3–7 days
Returns–
Alen (brand store)gray $838
Shippingabout 3–7 days
Returns–
Price history
Lowest price per day Tap a store to hide or show its line.
Lowest since Oct 14$799
Highest since Oct 14$838
Price drops since Oct 140no drop seen yet
Alen BreatheSmart 75i specifications
The numbers that matter first, then every fact by group. As published by the maker or the store we read it from.
Alen · on the market since August 2018
Clean air delivery rate (CADR)375 cfm
Room size we compare on572 ft²
Filter life10 months
Running cost: Filters: about $99 a year at today’s prices.
Consumables: The filter lasts about 10 months.
Cleaning performance 3 facts
- Clean air delivery rate (CADR)
How much clean air the purifier delivers an hour, measured with smoke, dust and pollen. A higher figure cleans a bigger room or the same room faster.
- 375 cfm (637 m³/h)
- CADR measured to
The test the CADR comes from. AHAM AC-1 and the DOE test are independent and comparable. A maker's own test is not.
- Not stated
- Room size we compare on
The room size where the purifier changes the air 4.8 times an hour under a 2.5 m ceiling, worked out from its CADR. We use it so every model is compared on the same rule.
- 572 ft² (53 m²)
Filter 1 fact
- HEPA filter class
How fine the filter is. True HEPA and H13 catch at least 99.97% of particles at 0.3 microns. HEPA-type is a weaker claim with no test behind it.
- H13 HEPA
Running costs 1 fact
- Filter life
How long the maker says a filter lasts, in months of normal use. A filter that is spent cleans less.
- 10 months
Air quality sensing 1 fact
- Particle sensor
- Laser
Sources: alen.com
The maker
Alen
- Headquarters: United States
Alen is an Austin-based maker of HEPA air purification products. Its range includes the BreatheSmart air purifiers, replacement filters, accessories and Scentra scents. The company says it aims to improve people's quality of life with air purification products.
