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Alen BreatheSmart 75i Review

A purifying powerhouse that easily handles large spaces but comes with a steep price tag
Alen BreatheSmart 75i
Credit: Alen
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Price:   $749 List | $741.99 at Amazon
Pros:  Excellent overall performance, performs well in large spaces
Cons:  Expensive upfront cost, very high operational cost, large footprint
Manufacturer:   Alen
By Buck Yedor ⋅ Review Editor  ⋅  Jun 16, 2022
Our Editors independently research, test, and rate the best products. We only make money if you purchase a product through our links, and we never accept free products from manufacturers. Learn more
79
OVERALL
SCORE


RANKED
#4 of 15
  • Air Cleaning Performance - 40% 9.0
  • Noise - 25% 8.3
  • Ease of Use - 25% 8.0
  • Operating Cost - 10% 2.0

Our Verdict

The Alen BreathSmart 75i is effective in larger spaces. It performs exceptionally well in the air cleaning performance tests and can crank through large swaths of dirty air. It's relatively quiet and very user-friendly. It is equipped with a color-coded air quality monitoring ring, which lets you know the current status of the air in the room. The biggest downside to this exceptionally high-performing model is its steep buy-in cost and its higher-than-average operational costs. If you have a large space and need a machine powerful enough to keep it clean, this air purifier might be just the ticket.

Compare to Similar Products

 
Alen BreatheSmart 75i
Awards  Editors' Choice Award Top Pick Award Editors' Choice Award Best Buy Award 
Price $749 List
$741.99 at Amazon
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$750 List
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$100 List
Overall Score Sort Icon
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Pros Excellent overall performance, performs well in large spacesExceptional air cleaning performance, very quiet operation, simple user experienceExcels in large spaces, extensive control options, great noise to power ratioExcellent air cleaning performance, quiet operation, average lifetime costBudget friendly, compact, great performance
Cons Expensive upfront cost, very high operational cost, large footprintExpensive operating costHigh operating cost, bulky, app required for some featuresExpensive operating costLoud, doesn't have an automatic air sensor
Bottom Line A purifying powerhouse that easily handles large spaces but comes with a steep price tagExcellent, high quality air cleaning performance from a quiet and convenient applianceA high-performance, high-volume machine that has user-friendly interface options and a wider range of controls than other purifiers of its classA top performing model that combines average lifetime costs to create a great valueA budget-friendly and space-efficient model that gets the job done but is a little underpowered for large spaces
Rating Categories Alen BreatheSmart 75i Winix 5500-2 Coway Airmega 400S Coway Airmega 1512HH Levoit Core 300
Air Cleaning Performance (40%)
9.0
8.1
9.0
7.9
7.6
Noise (25%)
8.3
9.3
8.3
9.0
4.0
Ease of Use (25%)
8.0
8.5
8.5
7.8
8.4
Operating Cost (10%)
2.0
5.0
2.0
5.0
7.0
Specs Alen BreatheSmart 75i Winix 5500-2 Coway Airmega 400S Coway Airmega 1512HH Levoit Core 300
Dimensions 27" x 18.5" 11.5" 8.2" × 15" × 23.6" 14.8" x 14.8" x 22.8" 16.5 x 9.5 x 18.5 8.7" x 8.7" x 14.2"
Weight 27 lbs 15.4 lbs 24.7 lbs 12.7 lbs 7.5 Ibs
CADR 400 CFM 246 CFM 328 CFM 240 CFM 135 CFM
True HEPA (99.97%) Yes Yes Yes Yes Yes
Estimated Lifetime Cost (5 years) $1,289 $660 $1,339 $556 $455
Airborn Particulate Reduction After 1 Hour (%) 100.00% 99.99% 99.96% 99.84% 96.33%

Our Analysis and Test Results

With the Alen BreatheSmart 75i, if clean air is what you're after, clean air is what you'll get. It scores exceptionally high in our air purification tests. It's also quiet and comes packed with user-friendly features. The only major drawback is the price point and the usage costs associated with running this powerful device.

Performance Comparison


Alen BreatheSmart 75i air purifier - the alen breathesmart 75i is the machine you want for large spaces.
The Alen BreatheSmart 75i is the machine you want for large spaces.
Credit: Laura Casner

Air Cleaning Performance


Our performance testing consisted of a few different components. The first was making sure that the CADR (clean air delivery rate) number provided by the manufacturer was verified by AHAM (Association of Home Appliance Manufacturers). This ensures that the machine's efficacy has been verified by a third party; not all air purifiers go through this outside verification. The BreatheSmart 75i has the AHAM stamp of approval and is capable of cleaning 400 cubic feet of air per minute. Ultimately, this means that this is an exceptional option for large rooms.

The next step was sealing up our 150-square-foot testing room and filling it with smoke by burning paper and other testing materials. We monitored the air with a Dylos air quality monitor; once the room reached our desired level of airborne particulate pollution, we kicked on the BreatheSmart 75i for an hour. After 30 minutes, there were only 16.62% of the original particulates left floating in the air, .003% after 45 minutes, and 0 detectable particulates after an hour. While the odor from the burnt paper wasn't entirely eliminated, it was severely reduced.

Alen BreatheSmart 75i air purifier - the alen breathesmart 75i is a powerhouse when it comes to air...
The Alen BreatheSmart 75i is a powerhouse when it comes to air purifying performance. It was able to remove 99.99% of measurable particulates from our testing room.
Credit: Laura Casner

Noise


While we all want to be in a room breathing clean air, some machines are simply too noisy and distracting to make it feel worthwhile. In order to see just how noisy each device was, we turned each one on and measured the sound output with a decibel reader. Even when set to the turbo, the BreatheSmart 75i produced very little noise. In this setting, it omits a pleasant low hum that our testers found to be noninvasive white noise. When running on medium, it was even quieter, and it was all but unnoticeable when set to low.

Alen BreatheSmart 75i air purifier - for such a powerful machine, the breathesmart 75i is remarkably quiet.
For such a powerful machine, the BreatheSmart 75i is remarkably quiet.
Credit: Laura Casner

Ease of Use


When testing each machine's ease of use, we looked at a couple of key features. First, we timed how long it took to get the device out of the box and set it up. It took our testers about five minutes to get the BreatheSmart 75i up and running, which is pretty average when compared to most other models.

As with the majority of air filters, the BreatheSmart 75i does not come equipped with a remote control. The built-in control panel, however, is simple and easy to use. The buttons are straightforward and well labeled.

Alen BreatheSmart 75i air purifier - the breathesmart 75i comes equipped with a color-coded automatic air...
The BreatheSmart 75i comes equipped with a color-coded automatic air sensor.
Credit: Laura Casner

One of our favorite features is the inclusion of an air quality monitor. This lets you turn the machine to "auto" and will kick on if the room's air quality dives below a certain measurement. This function works in tandem with an LED light ring that changes color as the air quality improves or worsens. It can be set to run in increments of two, four, and twelve hours and has five different speed options. The BreatheSmart 75i is a large and bulky machine. While it is equipped with handles, it weighs a whopping 27 pounds, which makes it a little more challenging to relocate.

Alen BreatheSmart 75i air purifier - weighing a full 27 pounds, the breathesmart 75i can be challenging...
Weighing a full 27 pounds, the BreatheSmart 75i can be challenging and awkward to move around.
Credit: Laura Casner

Operating Cost


Operating costs account for two things. The amount of electricity the device uses and how often you have to replace filters. To measure the amount of electricity used, we hooked the device up to a watt reader and recorded how many kilowatts per hour it used while running on a medium setting. Assuming 12 hours of use per day, it costs around $9.00 to run the BreatheSmart 75i for a year. While quite a few devices were cheaper to run, this was nowhere near the highest annual cost.

Alen BreatheSmart 75i air purifier - while not the cheapest, filters should last you a full year of use.
While not the cheapest, filters should last you a full year of use.
Credit: Laura Casner

While the BreatheSmart 75i isn't too expensive to run for a year in terms of electricity, you will need to replace its combined HEPA and carbon filter once a year. These will run you around $99.00 a pop. We assumed an average lifespan of five years for all of the devices; when you add the initial purchase price, the annual use costs, and the annual filter costs, this machine has the highest lifetime costs of any of the air purifiers we tested.

Value


While the initial purchase price is hefty, the performance offered by the BreatheSmart 75i is outstanding. If you have a large space and need serious performance, this machine is up for the task. If you have a smaller space or are on a budget, other models will likely be better suited. All in all, the Alen delivers and we find it's worth the price.

Alen BreatheSmart 75i air purifier - while the lifetime costs associated with this machine are high, you...
While the lifetime costs associated with this machine are high, you will be hard-pressed to find an air purifier better equipped to handle large spaces.
Credit: Laura Casner

Conclusion


The Alen BreatheSmart 75i is powerful, quiet, and easy to operate. The only downside is the high lifetime costs associated with this machine, as well as the initial purchase price. However, if you need an air purifier for use in large spaces and you're after a machine that is quick and effective, look no further.

Buck Yedor
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