Alen BreatheSmart HEPA Air Purifier Review

Let's kick start the review with the Classic line model;: Alen BreatheSmart air purifier. One of the most robust and highest purifying coverage  paired with WhisperMax and SmartSensor technology,  Alen BreatheSmart has emerge as consumers preferred model in choosing a highly capable air purifier; hardly any surprise at all. What effective it is against airborne pollutants and what is the annual filter replacement cost? Continue reading to learn more about its features and its personalizable front cover.
± 649.00 p
     Annual filter ^    
± 46 - 138 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 Classic Specification

ProductAlen BreatheSmart Classic
17.8 x 26.8 x 10 in
(45.2 x 68.1 x 25.4 cm)
Weight21 lb (9.5 kg)
Coverage (up to)1100 sq. ft. (102 m2)
Airflow speed150-286 cfm (255-486 m3/h)
Dust free (CADR)300 cfm (510 m3/h)
Pollen free (CADR)300 cfm (510 m3/h)
Smoke free (CADR)300 cfm (510 m3/h)
Humidifying(H) speed
- Lifespan
- Replacement cost ($)
Washable Pre-filter (with HEPA filter)
6 - 18 months
HEPA filter
- Lifespan
- Replacement cost ($)
HEPA-Pure Filter BF35
6 - 18 months
+- 69
Carbon filter
- Lifespan
- Replacement cost ($)
Ionizer/ TechnologiesIonizer
UV-light/ PCO
Other filter
All-in-one filter
- Lifespan
- Replacement cost ($)
Optional/ Addon
6 - 18 months+- $79
HEPA-OdorCell Filter BF35-MP
6 - 18 months+- $109
HEPA-FreshPlus Filter BF35-VOC
6 - 18 months+- $89
Noise level42 - 56 dB
Power usage level64 - 105 W
Timer/ Scheduler4, 8, 12 hours
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 pre-filter/ HEPA-Pure filter - [Optional] filters - HEPA-Silver filter, HEPA-FreshPlus filter, HEPA-OdorCell filter
  • 4 fan speeds with auto mode
  • Air quality indicator light (Blue, Yellow, Red)
  • Advanced SmartSensor
  • Personalizable front cover panel
  • Child-lock control panel and child-safe vent guard
  • 4, 8, 12 hour Pre-set timer
  • Smart Filter Light indicator
  • Lifetime limited warranty


  • Plenty of swappable wood trim front cover design.
  • Wide purifying coverage, superior airflow delivery rate and highly adjustable (up to 4 speed).
  • Up to 3 optional filter upgrade to choose from depending on your needs.
  • Ionizer could be turn on or off.
  • Longer lasting filters (up to 18 months) depending on usage volume/ air quality.
  • Accurate Smart Filter Light replacement indicator that calculates based on usage/ fanspeed/ environment.
  • Abundance of features - SmartSensor (air quality sensor), auto mode, filter life timer, pre-set timer.
  • Child friendly machine with locking control panel and safe vent guard.
  • Alen unique Lifetime Limited Warranty.


  • Lacks odor filtration on bundled HEPA-Pure filter (Optional filter upgrade required).
  • No dedicated odor carbon filter which could come in handy as filter replacement can be done separately.
  • Noisy at highest speed nevertheless Auto mode does come to rescue.

The starters

Alen BreatheSmart Classic dimension
17.8 x 26.8 x 10 in
(45.2 x 68.1 x 25.4 cm)
Alen BreatheSmart Classic weight
21 lb (9.5 kg)

At a conventional size of 17.8 x 26.8 x 10 in, Alen BreatheSmart air purifier is one of the most modern, eye-pleasing air cleaner in its class thanks to the front wood trim cover design. Up to 14 front cover panel to ranging from Brushed stainless steel to Weathered grey, there is definitely 1 design that would suit your home decor. Weight wise is considerably light for its segment at only 21 lb, you could easily carry the machine via its back handle. Continue touring the air cleaner, you have side air intake grill at sides and bottom just above the stand while air output grill is located at top below the carrying handle. Fitting is tight from top to bottom with no air by-pass detected during our test. Overall Alen BreatheSmart air purifier might have a plasticky built, it feels solid with the durability to last for ages.

Alen BreatheSmart Control

Continue with the top control panel, operating Alen BreatheSmart air purifier is super easy with separate round button and dedicated indicator light. Starting from left, you have the Ion button, Filter life button, Timer button, Power button, Speed button and finally Auto button. To begin, press the power button to start the air cleaner, press again to completely turn off the displaylight, continue pressing again to stop the air cleaner from operation. Different colors will light up around the Power button to indicates its surrounding air quality. Blue means low level of airborne particles detected, yellow means moderate level of airborne particles detected while red indicates significant level of airborne particles detected. Press Ion to enable the ozone-free ionizer (indicator light on), press again to disable it. There are 3 indicator lights on top of Filter life button, when green light is illuminated, filter condition is good so no action required. When yellow light is illuminated, the filter is reaching its end-cycle and you should start ordering the new replacement. When red light is illuminated, it is time to replace the filter. To reset the filter indicator light, press and hold the Filter life button down for 5 seconds. The indicator light should revert from red to green. To set the number of hours the air cleaner should be in operation, press the Timer button once and it will lock at 4 hours runtime, press again to set it to 8 hours, again to set it to 12 and again to disable the countdown timer. Speed button is self-explanatory, pressing the button will cycle between speed 1, 2, 3 and T (Turbo). Lastly, press the Auto button to activate Auto mode where the air cleaner would rely on its SmartSensor technology to automatically set the right fan speed based on the amount of airborne particles in its surrounding air.

Quickly go through the standard list of equipment: 3-stage filtration with 4 fanspeed, HEPA-Pure filter (default choice), Ionizer, SmartSensor with auto mode, air quality indicator, quiet WhisperMax technology, Advanced Smart Filter that calculates filter replacement life based on usage/ environment, child lock, Auto-off safety feature that disable the unit from functioning when front cover is not properly closed, UL listed, Energy Star rated and Lifetime limited warranty.

Airflow, speed, and CADR

Alen BreatheSmart Classic coverage
Purifying coverage
1100 sq. ft. (102 m2)
Alen BreatheSmart Classic fanspeed
Excellent purifying applicable that can cover an estimated 1100 sq. ft. in under 1 - 2 hours at max speed (690 sq. ft. for speed 2). No doubt it can cover most ground including large living hall, lounge, bedroom or playroom. Airflow distribution is punchy and consistent with speed 1 start at a strong 150 cfm, speed 2 at 185 cfm, speed 3 at 225 cfm and turbo at 286 cfm. Auto mode would adjust between the 4 speed and is fairly responsive to surrounding particles.
Alen BreatheSmart Classic dust CADR
300 cfm (510 m3/h)
Alen BreatheSmart Classic pollen CADR
Pollen CADR
300 cfm (510 m3/h)
Alen BreatheSmart Classic smoke CADR
Smoke CADR
300 cfm (510 m3/h)
CADR at an average of 300 cfm for dust, pollen and smoke. Based on the purifying coverage and airflow rate, there is more than enough juice to boost through the 4 selectable fanspeed. Alen BreatheSmart air purifier can handles all types of household particles and allergens but you do have to select the right type of filter in order for it to work. For example, to deal with smoke related troubles, opt for HEPA-Fresh filter rather than the standard HEPA-Pure filter (more on this later).

What’s inside count

While Alen BreatheSmart air purifier "only" comes with 1 bundled filter set, the filter quality is always there, therefore it still rocks in filtering out common airborne pollutants at a reasonable time. Starting with the washable pre-filter (attached above HEPA filter), the first stage pre-filter would trap large particles while prolonging the HEPA filter lifespan. Depending on which HEPA filter you choose, the standard HEPA-Pure filter is excellent at removing common allergens and microorganisms without any deodorization capability. Optional filters upgrade includes mold, germs & asthma specialist HEPA-Silver, chemical, VOCs, smoke targeted HEPA-FreshPlus (recommended) and pet & diaper odor neutralizer HEPA-OdorCell. Last but not least the built-in ionizer would release negative ions and electrostatically merge unwanted ions into one. As a result, the heavier particles would drop from the air and allowing the HEPA filter to capture.

Filter maintenance and care

Unlike every other console air cleaner that comes with multi-layer of filters, replacing Alen BreatheSmart filter is probably the easiest task as there is only 1 filter change. With the unit standing upright, pull out the front panel from the bottom corner. Remove the used filter by pulling the pull strings and place the used filter in a plastic bag to prevent dust from re-spreading into the air. Prepare the new filter set by removing the plastic wrap and insert into the air purifier with the pull strings facing towards you (outward). Finally, snap back the front panel but this time start with top tabs then follow by the bottom. The entire steps take less than 2 minutes excluding cleaning the washable pre-filter. To wash the pre-filter, slowly peel the black foam layer that is held on work Velcro. Proceed by lightly vacuum or wash the pre-filter off any large particles such as dust and hair. If you choose to skip the pre-filter care (not recommended), you only need to do this every 6 – 18 months as the HEPA filter is non-washable.

Keep it down

Alen BreatheSmart Classic noise level
Noise level
42 - 56 dB
Alen BreatheSmart Classic power consumption
Power consumption
64 - 105 W

42 - 56 dB noise level is standard in its class although on paper it feels quieter on the whole (probably due to the WhisperMax technology). Auto mode is great in controlling the noise level for bedroom use unless you are planning to operate it constantly at max speed. Ionizer does not generate much noise unlike some other models.

Power consumption varies depending on the fanspeed you are constantly in. Between 64 - 105 W, it is slightly higher than we would hope but nonetheless understandable given is purifying range. Like every other Alen BreatheSmart air purifier, there is energy star certified so it's somewhat energy-efficient if you manage to meet its criteria.

At what cost

Alen BreatheSmart Classic MRSP/ RSP
+- 649.00
Alen BreatheSmart Classic annual filter replacement cost
Annual Filter Cost
+- 46 - 138
^ Replacement filters/ estimated cost
Alen BreatheSmart air purifier has good price VS performance ratio but is expensive as with most air purifying machine in this category. Features wise is premium level well-equipped but the cost could go even higher if you opt for different front panel design and filter upgrade. We highly recommend doing on the latter for better overall filtration. What's standout is the annual filter cost which is considerably cheap in its group as only 1 filter needed to be replaced. On normal use the filter should last between 12 - 18 months, perfect time frame to stock up online with no shortage of stock.
One of the more expensive air purifier in the segment, Alen BreatheSmart air purifier price is clearly reflected on the above chart outpricing the likes of Winix and Honeywell air purifier. Still, it is cheaper than Rabbit Air MinusA2 that also offer the choice of customizable front panel and filters. Annual filter replacement cost is on the better end with specific air condition and limited operation hours. On 24x7 operation, expect a much higher maintenance cost as you can see from the annual filter chart. Back to the price guide, Alen BreatheSmart has pretty much a consistent price with little discount. You can try purchasing it in major retail like Lowe's, Bed Bath & Beyond, Home Depot, Target or go with our prefer route Amazon instead. Beside the 30 days money back guarantee and free shipping (limited seller), there is also bundled deal and refurbished model although we do not recommend the later. Purchasing from official website is also doable even though you have to register a new account, you gain the benefit of 60 days return policy, the most complete front panel design selection and also free shipping (limited to continental US).

Alen BreatheSmart Classic VS the challengers

Alen BreatheSmart FIT50

The cheaper and slightly smaller version with similarity in design, features and the highlight swappable front panel. The downside of picking Alen BreatheSmart Fit50 is you do have to settle for a weaker CADR and smaller purifying coverage that at best 900 sq ft.
Alen BreatheSmart FLEX

Alen BreatheSmart FLEX

The smallest version with even cheaper price tag and maintenance cost. Like the previous model, Alen BreatheSmart Flex has an even smaller purifying coverage that can only go up to 700 sq ft. You do have to forego some features like Auto mode due to the lack of sensors but the rest of the specification including the swappable front panel design remain.
Rabbit Air MinusA2 SPA-780A

Rabbit Air MinusA2 SPA-780A

Also comes with 4 customized filter options and plenty of beautiful front panel design to choose from, Rabbit MinusA2 SPA-780A might not having the airflow distribution as Alen BreatheSmart air purifier, it rocks with a more comprehensive 6-stage filtration plus a wholesome of aesthetic enhancement including a thinner and lighter frame size body.
Airmega 400

Airmega 400

Better purifying coverage, CADR with dual pre-filter MAX2 setup, these 2 are the main reasons to go with Airmega 400 rather than BreatheSmart. Otherwise Alen BreatheSmart air purifier is pretty much the better choice with cheaper price point plus the availability to customized filter and front panel design.

Final thoughts on Alen BreatheSmart Classic

There is no question on the capabilities of Alen BreatheSmart air purifier but ask yourself, what is the purpose of purchasing an air cleaner? If is for allergies related purpose, Alen BreatheSmart air purifier would do an excellent job according to 88% of the Amazon user reviews rated at 4 – 5 stars. Other compliments include the abundant of features and, wide purifying coverage and airflow performance. What surprised us is that not many people praise the customizable front panel option that we think could be because of the additional cost involved. For the remaining 12% users that gave it a not so good review, their complains mainly focus on the poor filtration against allergies from pets despite the right type of customized filter. Contrasting feedback to ponder upon, if you do not mind spending this much on a top-notch machine, what we have here is an air purifier that has customizable exterior and interior (optional filters) as well. Recommended.
Alen BreatheSmart HEPA Air Purifier

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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