Alen BreatheSmart 75i

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*
Latest Amazon price

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)
Dust free (CADR)347 cfm (590 m3/h)
Pollen free (CADR)347 cfm (590 m3/h)
Smoke free (CADR)347 cfm (590 m3/h)
Airflow speed95 - 350 cfm (161 - 595 m3/h)
A filterAnnual filter cost ($)+- 66 - 99
- Lifespan
- Replacement cost ($)
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 consumption45 W
Timer/ Scheduler2, 4, 12 hours
SensorsIntelligent sensor
More color options
Auto mode
Air qualityAQ indicator
Filter change indicator
Wi-Fi/ BTBluetooth
Remote control
Child lock
WarrantyLifetime Limited Warranty
Email/ Phone support

Product image

Alen BreatheSmart 75i 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
Alen BreatheSmart 75i dimension
18.5 x 27 x 11.5 in
(47 x 68.6 x 29.2 cm)
Alen BreatheSmart 75i weight
27 lb (12.2 kg)
Alen BreatheSmart 75i is fully engineered on exact BreatheSmart philosophy, design and reliability catered for 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 is located at top and well screwed for precise adjustment. Alen BreatheSmart 75i body configuration is excellent that you would expect no less. Great example of its durability and reliability is the Forever guarantee warranty where people can continue utilizing the air purifier even after certain duration of time.

Airflow effectiveness and purifying coverage

The main reason to go this air purifier, Alen BreatheSmart 75i is terrific for 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 air flow 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 is 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.

Alen BreatheSmart 75i is covered against

Alen BreatheSmart 75i VS Dust



Alen BreatheSmart 75i VS Pollen



Alen BreatheSmart 75i VS Hair

Hair/ Pet hair


Alen BreatheSmart 75i VS Dust mite

Dust mites


Alen BreatheSmart 75i VS Mold/ Mildew

Mold/ Mildew


Alen BreatheSmart 75i VS Pet dander

Pet dander


Alen BreatheSmart 75i VS Virus/ Germ

Virus/ Germ


No doubt Alen BreatheSmart 75i 3-stage filtration is truly efficient when go up against household and tiny particles, irritants, allergens, bacteria and viruses. As a result of consistent 95 - 350 cfm airflow distribution and wide 1300 sq. ft. purifying coverage, Alen BreatheSmart 75i comes with Washable Pre-filter (with HEPA filter) Pure Antimicrobial True HEPA Filter B7-Pure filtration is magnificent in wiping out dust, dust mites, pet dander, pollen, mold, mildew and germs. 

In conclusion......

  • 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.
Build quality
Airflow delivery
Particle Filtration
Smoke Filtration
Alen BreatheSmart 75i

Frequently Asked Questions (FAQ)FAQ

Where is Alen BreatheSmart 75i air purifier made from?

Alen BreatheSmart 75i air purifier is made in China and developed in the United States.

What does Alen BreatheSmart 75i Lifetime Limited Warranty cover?

The Lifetime Limited Warranty cover your Alen BreatheSmart 75i air purifier from defects in materials or workmanship as long as you own it.
******** SIDE NOTE ********
  • Warranty will only be applicable if you are the unit original purchaser and in the US or Mexico.
  • Alen BreatheSmart 75i air purifier must be connected to a proper power supply (see voltage label). Using voltage converter, transformer or plug adapter will effectively void the warranty.
  • Shows no evidence of tampering, accidental damage, mishandling, modification or repair by anyone other than authorized Alen service personnel.
  • Replace the filter as stipulated timeframe in the manual to avoid excessive stress on the motor.
  • Remember to keep your proof of purchase and register your Alen BreatheSmart 75i air purifier at or call 1-800-630-2396 for warranty validation.

What is the differences between each Alen HEPA filters and which Alen BreatheSmart 75i replacement filter should I get?

All Alen BreatheSmart 75i filters are great at addressing dust, allergies and asthma. For a specific concern, choose:

  • HEPA-Pure - standard filter for household allergy relief.
  • HEPA-Silver - advanced all-around solution filter that is best against mold, germs & bacteria.
  • HEPA-Fresh/ HEPA-FreshPlus - chemical filter that is best against strong chemicals, smoke and VOCs.
  • HEPA-OdorCell - odor neutralizer that is best in removing diaper smell and pet odor.

What is the difference between Smart Filter Light and standard Filter Light?

Smart Filter Light calculates the filter lifespan based on actual usage and surrounding environment while standard Filter Light is purely based on runtime. Smart Filter Light is available in Alen BreatheSmart Classic and Fit50.

What is the differences between HEPA-Silver and HEPA-FreshPlus as both comes with activated carbon?

HEPA-Silver comes with 1.5 lbs activated carbon and is ideal against mold, germs & bacteria while HEPA-FreshPlus comes with higher 3 lbs activated carbon that is best against strong chemicals, smoke or VOCs.

How many filters Alen BreatheSmart 75i used?

Alen BreatheSmart 75i uses just one filter that is easy to replace if you discounted the washable pre-filter. You do have the option to choose from 1 of 4 customized filters that contains both HEPA and carbon filter materials.

Which is the best filter for paint, chemicals or formaldehyde fumes??

For chemicals such as VOCs or formaldehyde, choose either HEPA-Fresh that comes with 1.5 lbs activated carbon or the stronger HEPA-Fresh/ HEPA-FreshPlus that comes with 3 lbs activated carbon.

Which is the best filter to get rid of the smoke from wildfire/ wood burning?

For Alen BreatheSmart 75i, choose HEPA-Fresh or HEPA-FreshPlus (depends on model) would be the best option as it comprises 3 pounds of carbon pellets that is effective in absorbing chemicals component released from wood smoke.

Does Alen BreatheSmart 75i get rid of cigarette smoke?

Yes it does but you would have to upgrade the filter to either HEPA-Fresh or HEPA-FreshPlus (depends on model) that comes with thick layer of Activated Carbon.
******** SIDE NOTE ********
  • Alen BreatheSmart 75i will not remove residual smoke/ odors from wall paint, furniture, carpet and drapes.
  • Make sure Alen BreatheSmart 75i is used in the recommended room size or intended source.
  • Run on higher fan speed for maximum efficiency.
  • Avoid smoker from smoking indoor.

Which filter would work best to get rid of musty mold in a basement?

For Alen BreatheSmart 75i, opt for the HEPA Silver filter upgrade as it is designed to tackle mold, germ and bacteria in a basement. A dehumidifier would also be a great help in curbing down microorganism growth.

Which filter do I need to get rid of pet odors and litter box odors?

Yes it can but you have to opt for the HEPA-OdorCell filter upgrade that specialize in eliminating diaper and pet odors.

Which filter in Alen BreatheSmart 75i is best for just eliminating cooking smells in an open kitchen?

You could either opt for HEPA Silver Filter, HEPA FreshPlus or even HEPA-OdorCell filter to eliminate light cooking odors.

Is it possible to use more than 1 customizable filter at the same time?

You can only use one filter at a time in Alen BreatheSmart 75i. Please select the right filter that is best suited to your environment.

How do I reset Alen BreatheSmart 75i filter indicator after I have replaced it with a new filter?

You can reset the filter replacement indicator by holding the button down for about 5 seconds.

Where do I find Alen BreatheSmart 75i replacement filter?

You can find the replacement filter for Alen BreatheSmart 75i from their official website or at Amazon. Refer to the instructional booklet on the correct filter replacement code or through our product specification.

What is the function of SmartSensor with Auto-Mode?

SmartSensor is of course a sensor that detects the level of airborne particles in its surrounding and pass the information to the air purifier. Auto mode is a feature that automatically adjust the fan speed according to the information it received. Only air purifiers equipped with SmartSensor or equivalent sensor with have the Auto mode feature.

Is Alen BreatheSmart 75i air purifier wall mountable?

No Alen BreatheSmart 75i air purifier is not wall mountable.

Which filter does Alen BreatheSmart 75i comes with?

Alen BreatheSmart 75i comes with HEPA-Pure filter by default although user have the option to opt for different set of filter.

Is Alen BreatheSmart 75i's HEPA filter washable?

No Alen BreatheSmart 75i's HEPA filter is not washable as the water flow would damage the filter’s fiber. You should replace the filter instead according to the recommended lifespan or when the filter replacement indicator light lit up.

Can you use an extension cord on Alen BreatheSmart 75i air purifier?

Yes you can extension cord but make sure the cord is not damage in anyway or overloaded from too many connection that would short circuit and damage Alen BreatheSmart 75i air purifier.

Alen BreatheSmart 75i Troubleshooting

Safety Tips


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