Alen BreatheSmart 75i Review

The most powerful BreatheSmart air purifier to-date, Alen BreatheSmart 75i is our current favorite air purifier of the bunch with improved airflow delivery rate and new intelligent sensor technology. Aesthetically and functionality still a BreatheSmart air purifier, Alen BreatheSmart 75i usability, and durability fit in modern-day family seamlessly well, exactly the same reason we loved about previous Alen models. Compare with other air purifiers as regards to airflow delivery rate, applicable area, noise level, and power usage, Will Alen BreatheSmart 75i improved airflow performance match the unavoidable higher price tag? Browse through the air purifier review below.
± 749 p
     Annual filter ^    
± 66 - 99 p
 Online price*
** MRSP (Manufacturer's Suggested Retail Price)/ RSP (Retail selling price) is provided by cleanairprice.com. Accurate at the time of posting.
^ Annual filter cost is calculated based on filter price and 12 hours of usage. Pricing could vary depending on air quality, usage frequency, and speed.

Alen BreatheSmart 75i Specification

ProductAlen BreatheSmart 75i
18.5 x 27 x 11.5 in
(47 x 68.6 x 29.2 cm)
Weight27 lb (12.2 kg)
Coverage (up to)1300 sq. ft. (121 m2)
Airflow speed95 - 350 cfm (161 - 595 m3/h)
Dust free (CADR)347 cfm (590 m3/h)
Pollen free (CADR)347 cfm (590 m3/h)
Smoke free (CADR)347 cfm (590 m3/h)
- Lifespan
- Replacement cost ($)
Washable Pre-filter (with HEPA filter)
12 - 18 months
HEPA filter
- Lifespan
- Replacement cost ($)
Pure Antimicrobial True HEPA Filter B7-Pure
12 - 18 months
+- 99
Carbon filter
- Lifespan
- Replacement cost ($)
Ionizer/ TechnologiesIonizer
UV-light/ PCO
Other filter
All-in-one filter
- Lifespan
- Replacement cost ($)
Optional/ Addon
Fresh Antimicrobial True HEPA Filter B7-Fresh
12 - 18 months+- 129
Noise level25 - 49 dB
Power usage level45 W
Timer/ Scheduler2, 4, 12 hours
SensorsIntelligent sensor
Auto mode
Air qualityAQ indicator
Filter change indicator
More color options
Wi-Fi/ BTBluetooth
Remote control
Child lock
WarrantyLifetime Limited Warranty
Email/ Phone support

Key features

  • 3-stage filtration with ionizer
  • Washable mesh pre-filter/ HEPA-Pure Antimicrobial filter - [Optional] HEPA Fresh Antimicrobial filter
  • 4 fan speeds with auto mode/ lights-off mode
  • Smart Filter Light indicator
  • intelligent sensor technology
  • Personalizable front panel design
  • Enhance sleeping experience up to 25% with soothing pink noise frequency
  • Children-friendly with Child-lock and child-safe vent guard
  • 4, 8, 12 hour Pre-set timer
  • Forever guarantee warranty


  • The availability to choose your own front panel design.
  • The widest and strongest airflow performance in Alen BreatheSmart series.
  • All filters including the upgradable HEPA Fresh filter comes with antimicrobial treatment.
  • Ozone-free Ionizer that can be disable if is not needed.
  • Longer-lasting filter that on normal use can last up to 18 months.
  • Child lock, Auto/ lights-off mode powered by the newer, improved intelligent sensor.
  • Air purifier is guaranteed for life if uses properly (no counterfeit filters).


  • No smoke, chemical or odor filtration on the basic HEPA Pure filter.
  • Lacks multi-stage, purifying depth to enhance the overall filtration efficiency.
  • Wi-Fi supported remote access would be a nice touch for its price range.
Alen BreatheSmart 75i is fully engineered on exact BreatheSmart philosophy, design, and reliability catered for an owner that is familiar with the previous lineup. To start with the air purifier design, with its simpleness polyester and plastic interchangeable front panel, Alen BreatheSmart 75i is proportionally shaped with no sharp sides. Controls are located at the top and well screwed for precise adjustment. Alen BreatheSmart 75i body configuration is excellent that you would expect no less. A great example of its durability and reliability is the Forever guarantee warranty where people can continue utilizing the air purifier even after a certain duration of time.

Airflow effectiveness and purifying coverage

The main reason to go this air purifier, Alen BreatheSmart 75i is terrific for a full-scale room with huge space. The overall purifying applicable radius is incredible that has no problem for master bedroom, living hall or small office. In addition to that, Alen BreatheSmart 75i multiple airflow intake and outlet is impressive at wiping off near proximity air-borne particles. The diverse airflow delivery rate will draw in close proximity substances, bacteria, household contaminants including cooking, cleaning product and tobacco smokes.

Noise level and power consumption

Alen BreatheSmart 75i suppressed noise level with pink noise frequency is best to be use in bedroom all through the night. Noise level is discreet at low fan speed, audible at medium fanspeed and reasonably noisy at max pace. Put next to fairly identical segment home appliances, the noise level is reasonably low that you would not sense Alen BreatheSmart 75i existence. In the meantime, Alen BreatheSmart 75i would not have substantial impact on your utility bills even with the improved airflow circulation. Low power usage at first fan speed while electricity consumption is higher in maximum speed. When compare to household appliances, Alen BreatheSmart 75i every day power usage is within a justifiable rate.
noise graph

Final thoughts on Alen BreatheSmart 75i

It may come at a cost, but the overall improved airflow performance and usability are worth every penny of Alen BreatheSmart 75i. Sure there are better features air purifier in the market that comes at a lower price tag, Alen BreatheSmart 75i stand out on its own term that no one can deny. in comparison with the strong points and weak points, you can absolutely see there are more benefits on the air purifier than the few minor flaws. As we disclosed above, we highly endorse Alen BreatheSmart 75i.

At what cost

Alen BreatheSmart 75i MRSP/ RSP
+- 749
Alen BreatheSmart 75i annual filter replacement cost
Annual Filter Cost
+- 66 - 99
^ Replacement filters/ estimated cost
SPA-550A is the least expensive in Rabbit Air BioGS and MinusA2 series; not so much so when compared with other similar high purifying range air purifiers from Winix, Honeywell. While CADR figures are not overly impressive, you do receive a great deal of premium features as standards like Auto mode, air quality sensor, timer and remote control (with holder). On the other end, annual filter replacement cost is close to flawless as the filter lifespan is lengthy (up to 3 years) and can be purchased in a bundled replacement kit. For the filter maintenance factor alone, Rabbit Air SPA-550A will be well worth the purchasing price in long-run.
As mentioned earlier, competitors model like Winix NK105/ HR1000, Alen BreatheSmart series or Blueair 205 offer wider purifying coverage and better CADR with a cost. If you already decided on BioGS 2.0, Rabbit Air SPA-550A has a fixed price regardless from channels like Bestbuy, Overstock or official website. As we are part of Amazon affiliate, you can support us by purchasing from Amazon that comes with free shipping and 30-day no questions asked return policy. Alternatively, you can consider purchasing from Rabbit Air's website (again no discount) that add the merits of 90-day money back guarantee and stock availability assurance. Finally, all official, non-import Rabbit Air purchase comes with 24x7 technical support/ customer service and a 5 years official manufacturer warranty.

Alen BreatheSmart 75i VS the challengers

Rabbit Air BioGS 2.0 SPA-625A

Rabbit Air BioGS 2.0 SPA-625A

As the model name rightly pointed, this is the higher version of BioGS series that offers better airflow performance and coverage (625 VS 550 sq.ft.) with a minor price increase. Everything else is exactly the same.
Honeywell HPA300

Honeywell HPA300

Another popular alternative in the list, Honeywell HPA300 is cheaper with better CADR performance than Rabbit BioGS. In long-run though, the higher filter replacement cost and less filtration depth might come back to haunt you.
Rabbit Air MinusA2 SPA-700A

Rabbit Air MinusA2 SPA-700A

Space-friendly, swappable front panel, 6-stage filtration (medium + customized filter), wider purifying coverage and of course better overall CADR. Rabbit Air MinusA2 is no doubt the upgrade both aesthetically and functionality at a premium cost.
Winix 5500-2 PlasmaWave

Winix 5500-2

Our highly recommended air purifier that is well-rounded in terms of pricing with performance ratio. Winix 5500-2 also has an identical setup as Rabbit BioGS in dimension, practicality features and filtration performance. The main differences between the 2 are BioGS has a much lower filter maintenance cost while 5500-2 gain a much lower price point.

Final thoughts on Alen BreatheSmart 75i

If you are looking for an air purifier that will do a fantastic job in alleviating common household pollutants, smokes and odors, look no further. As the positive review clearly outweigh the cons in Amazon reviews, 92% of them leave an exceedingly positive 4 – 5 stars. Users like Rabbit Air SPA-550A top-notch build quality, consistent performance with effective four-stage filtration, reliable customer service and economical operating cost from the prolong filters lifespan. The remaining 5% that leave a neglectable 1 - 2 stars is experiencing poor filtration performance mainly on smoke and odors. If we have to pick a bone with this air purifier, its older brother (SPA-625A) offers a better deal in terms of price ratio.

Verdicts and ratings

Build quality
Particle Filtration
Smoke Filtration
Alen BreatheSmart 75i

Max Fernandez

A loving father and a dedicated reviewer for airfuji.com with more than 1000 air purifiers under his belt. Max Fernandez is also one of the million patients currently suffering from asthma. Feel free to nudge him if you have any questions.

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