HomeReviewsAir Purifier ReviewsAlen Breathesmart Classic True HEPA Air Purifier Review

Alen Breathesmart Classic True HEPA Air Purifier Review

Due to an increase in air pollution, air purifiers are becoming essential for every house. The rise in demand has made the market highly competitive. There are so many options, and finding the right one that meets your needs becomes overwhelming.

But after sifting through the products both online and in-store, we have found the Alen BreatheSmart Classic True HEPA air purifier provides real value for money.

It’s a top choice when it comes to large spaces. Plus, it has been proven to help with various conditions like asthma and allergies as it fights to reduce dust, odors, mold, germs, etc.

But is it that good? We are going to find all about it in this in-depth review.

Alen Breathesmart Classic True HEPA Air Purifier Review


  • Suitable for large spaces.
  • Works excellent in open-space concept homes.
  • Reduces allergens, bacteria, dust, fur, dander, and pollen.
  • Air quality sensor.
  • The automatic fan setting runs without any user input.


  • It’s a bit noisy
  • No pre-filter and carbon filter

Alen Breathesmart Classic True HEPA Air Purifier Design and Size

Alen Breathesmart Classic has a simple design with a flat front, but it comes with a large footprint. And that’s pretty much normal for the units of this size. After all, it’s for larger spaces. It measures to be 26.75-inch x 17.75-inch x 10-inch.

But it weighs around 21 lbs, and you can comfortably move it around. So, it is still a decent size for a larger space, but if you use it in a smaller area, it will take more room.

Moreover, thanks to the Smart Sensor, it has a very comfortable display to read from a distance. It is there to gauge the level of impurities in your space so you can adjust the settings. Otherwise, it will do that for you on its own.

Alen Breathesmart Classic True HEPA Air Purifier Portability

As we have just mentioned, this unit weighs around 21 lbs. Therefore, it is not going to be that difficult to move around. Of course, casters would have helped here, but none seems slightly disappointing.

However, if this is a matter of mobility, this weight can quickly move from one room to another. It stands tall on its feet, so it will not cover much floor area either. It just needs a tight corner where it can continue to do what it’s supposed to do.

Alen Breathesmart Classic True HEPA Air Purifier Purifying Power

Alen Breathesmart Classic comes with good purification power. It can remove up to 99.99% of particles greater than 0.1 microns in spaces up to 1100 sq. ft. large every 30 minutes.

It can get the most out of pollutants present in the air of your room. Most of its competitors can only catch particles up to 0.3 microns, and their purification power is around 99.97%. So, this unit does its job pretty well.

The downside is that this model doesn’t come with a pre-filter so the main filter will be dirty faster. Also, if you need to purify smoke and odors, this is not an option because it doesn’t have a carbon filter.

Alen Breathesmart Classic True HEPA Air Purifier Key Features

Some key features that separate this unit from the competition include Smart Sensor, wider coverage area, True HEPA, and lifelong guarantee.

With the intelligent sensor, you don’t have to wonder if your Alen air purifier is working or not. With these sensors, all doubts eradicate once and for all.

This unit comes with particle sensor technology that will allow you to find out exactly about the current air quality. This sensor uses different colored light rings. The unit’s auto-mode starts working as soon as harmful particles are detected.

In addition, if anything goes along with your unit, Alen’s support staff is there to help you. If the problem persists, they will ship you a replacement. Now that’s pretty impressive.

Alen Breathesmart Classic True HEPA Air Purifier Noise Level

This is where Alen has to improve, and this is the only area that needs some improvement. At low speeds, the unit produces a noise that is at 42 dB.

This might not be that much of a problem, but as soon as you run your unit at high speed, the noise level goes up to 56 dB, and the unit starts to make noise.

Suddenly, it makes its presence felt by everyone in the room. This is something that Alen needs to improve on because this is the only problem this unit has.

Alen Breathesmart Classic True HEPA Air Purifier Power Consumption

When it comes to power consumption, this unit handles it very well.

It only consumes 1.6W while running at low speeds to 105W while running at high speeds. This is very low for a sizeable unit so it will save some utility costs.


This unit comes with a CADR or Clean Air Delivery Rate of 300. The highest possible rating score is 450 for pollen and smoke and 400 for dust. So, the BreatheSmart doesn’t score that bad at all.

These are pretty good numbers, especially if you compare them with competitors in the same category.

Alen Breathesmart Classic True HEPA Air Purifier Maintenance and Usage

No special maintenance is needed. Like other air purifiers, you will need to replace filters when needed. True HEPA H13 filter must be replaced once every 12 months if used daily in normal conditions.

When it comes out, the controls are straightforward, and you don’t have to be a tech expert to use this air purifier. Or you can leave the auto function on, and the air purifier can keep working by assessing the current air quality in your space.


  • Will Alen Breathesmart Classic work in an area bigger than 1100 square feet?

Yes, but I wouldn’t recommend that. The air quality will drop, the air purifier will work at the fastest speed because it won’t be able to purify all air, and energy consumption will be high.

If you need to clean larger spaces, look at the Alen BreatheSmart 75i model.

  • Does Alen Breathesmart Classic emit any ozone?

All air purifier units by Alen, including this unit, come with an optional Ozone Safe Ionizer. This feature is there to improve the overall filtration efficiency.

Therefore, all these Alen units are ozone-free and certified under CARB or California Air Resources Board, with an ozone emission concentration of 0.05 parts/million.

  • Can I leave Alen Breathesmart Classic turned on all day?

Air pollution is a persistent and pervasive problem. Therefore, leaving your air purifier turned on all day is good practice. As a result, you won’t have to turn it to the highest speed and save some on your utility bills.

  • How long does it take for Alen Breathesmart Classic to clean the room?

It usually takes anywhere between 30 minutes to 2 hours. But this unit by Alen can clean air in a 110 square feet room in just half an hour, which is quite fast.

Final Thoughts

Alen has done a fine job with this unit. It does cover vast space and is lightweight to move around. This unit is for a 1,100 square feet area, so it’s a highly recommended option for open-concept houses. In addition, you can run it all day long to keep breathing fresh air without any impurities.

The only downsides with this unit are the high noise at high speeds. Apart from that, Alen Breathesmart Classic is suitable for every home with an open-space concept because it is highly effective in its function and comes with a lifetime warranty.

If you want a better air purifier for smoke removal and odors, check AirDoctor 3000 or Medify Air MA-40.

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