Best Alen Air Purifiers

Alen Air Purifiers

Alen BreatheSmart HEPA Air Purifier for Rooms, 800 SqFt. Coverage Area, with HEPA Filter for Allergies, Dust, Dander, and Fur in White POWERFUL & SLEEK Cleans 800 SqFt every 30 minutes circulates air up to 5 times an hour Sleek design fits in any space from small to extra large bedrooms living rooms offices nurseries kitchens and basements
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BreatheSmart Classic


BreatheSmart FLEX


BreatheSmart FIT50


BreatheSmart 75i


BreatheSmart 45i

Best Alen Air Purifiers

Based out of Austin, Texas, this company is one of the top when it comes to air purifiers. They gained their sparkling reputation through consistent quality and incredible customer service.

Instead of offering cookie-cutter options, they have customizable solutions that fit your home, physical requirements, and design preferences. Their smart solutions are appealing to those who aren’t very tech-savvy but still want real quality and performance.

Started by founder, Warburg Lee, who suffered from allergies, he recognized from his own experiences that there was a severe lack of effective air purifiers out there. Those that were, were incredibly noisy and not ideal for enjoying home life. Through dedication and precise engineering, Alen has become an industry leader with very few real competitors.

Alen BreatheSmart Classic

If you are sensitive or allergic to pollen, dander, pet fur, dust mites, etc. then you’ll make good use of this model.

Cleaning up to 3 times faster than competitor models, it’s incredibly efficient and leaves behind clean, fresh air. The CADR rating is a bit low for this space, but we had no complaints. Even during heavy pollen seasons, we were left unaffected.

As previously mentioned, it does come with pre-filter to help capture larger particles while lengthening the life of your True HEPA filter. Moreover, you get an ozone-free ionizer, which further with particle-catching efficiency. You can also choose to add on a HEPA Silver, Fresh Plus, and OdorCell, though they do not come included by default.

The Auto Mode with the built-in timer is a crowd favorite, cleaning air all day and night without you having to adjust a thing. Go about your normal routine but benefit from happier lungs! WhisperMax technology minimizes noisiness, and if you like falling asleep to white noise, then you’ll drift off like a baby.

This Alen air purifier is also one of the most visually appealing we’ve ever seen. Choose from Oak, Rosewood, Brushed Stainless, Graphite, White, and much more.


  • Very quiet operation
  • Custom user experience
  • Large coverage area
  • Attractive appearance


  • High sensitive sensor detects moisture particles as pollutants

Alen BreatheSmart FLEX

If you found the previous model interesting, but have a smaller space, the Alen BreatheSmart FLEX fits right in. Look through any Alen BreatheSmart Flex air purifier review, and you’ll find it’s perfect for individual bedrooms, nurseries, smaller offices, etc.

Weighing just 15 pounds, you can easily move it within your home and don’t have to dread lugging it from room-to-room.

Just like with the others, you can choose front paneling to suit your tastes and décor. From White, Electric Blue, or Brushed Stainless to Espresso or Oak – the choice is all yours.

Cleaning up to 700 square foot spaces every 30 minutes, it’s twice as fast as competitor models when on the highest speed setting. At full speed, it’s a bit louder than the Classic (55 dB) though still quiet enough to fall asleep with. For children’s rooms and nurseries, it couldn’t be better. Sleep Mode comes with a Lights Out mode, too, so you’re not distracted by LEDs.

The True HEPA filter captures up to 99.7% of airborne particles down to 0.3 microns and lasts up to 12 months. In addition, it can kill mold spores and bacteria with its antimicrobial compound. While it’s great for year-round use, it is particularly handy during cold and flu season.

Consuming just 50 watts on Turbo speed, we found that it actually saved us money in electrical bills!


  • Great for small room coverage
  • Custom color options
  • Very quiet operation
  • Kills germs and mold
  • Low energy consumption
  • Compact and portable


  • Relatively low CARD for room size

Alen BreatheSmart FIT50

The Alen BreatheSmart FIT50 is the brand’s “#1 recommended purifier for wildfire zones, which can help create an EPA-recommended clean room for refuge from toxic smoke.”

However, even if you’re just looking for everyday usage, it packs more than enough power. It may be compact, but it’s serious about removing harmful particles in the air you breathe.

This model is perfect for spaces up to 900 square feet and comes with 8 different color options. Each is absolutely stunning so you can put it anywhere in the home.

A True HEPA filter is great for those who suffer from allergies or are bothered by household odors, fur, etc. We noticed that even just the first time turning it on, we felt less congested and were breathing with less effort.

The air quality sensor gauges the particles currently in the air. The power button changes colors according to the air quality. Blue means “excellent,” orange is “fair,” and red is “poor.” Switch it to Auto Mode, and it will automatically change the fan speed depending on the quality status. Four fan speeds are optimized to bring you perfectly purified air, no matter the situation.

Even if it’s on Turbo mode (the highest), you can rest easy with their advanced WhisperMax technology. This feature produces pink noise frequencies to help you fall asleep easier, feeling well-rested each morning.


  • Great for bedroom
  • Custom color options
  • Very quiet operation
  • Kills germs and mold
  • Compact yet sturdy


  • High air filter replacement cost

Alen BreatheSmart 75i

Making our way towards the end of our list, we bring you the Alen BreatheSmart 75i air purifier. If your top priority is a purifier that can take on large spaces, we can’t recommend this one enough. Thanks to the inclusion of activated carbon filtration, you no longer benefit from just cleaner air, but fresher smelling air.

Capable of plowing through 1,300 square feet in just 30 minutes, it’s perfect for even your widest open spaces or rooms. You get your choice of 5 different fan speeds and a 2-hour, 4-hour, or 5-hour timer.

The smart sensor will detect the number of airborne particles and auto-adjust the fan speed according to this. You’ll be able to see the LED color display as well, just so you’re aware.

Even at its highest speeds, you will hardly notice any noise. Developed by a former NASA engineer, the whisper-soft volume will never distract you from your work or studies. Consuming 45 watts of energy, this model uses the least out of all BreatheSmart air purifiers, currently.

While it’s slightly more expensive than the others, it’s worth it when you combine all of this with the extended HEPA filter lifespan. While alternative filters last around 9 to 12 months, this one lasted up to 15! In the end, this Alen HEPA air purifier ends up saving you money!


  • Great for large areas
  • Custom color options
  • Helps remove VOCs, foul odors
  • Very long filter lifespan


More expensive upfront cost

Alen BreatheSmart 45i

While any of the models on our guide help with allergies, if that’s your main priority, then the Alen BreatheSmart 45i should be at the top of your list. From irritated eyes from pet dander to full-blown allergic reactions, the 45i can help.

It’s affordable when compared not only to other Alen models but competitor options all across the market currently. However, quality or performance stay top-notch.

Appearance is slim and sleek, though it does come with notably fewer color options than the others we’ve covered. You get a classic White, White Marble, Espresso, Weathered Gray, and more – all of which look sophisticated and trendy.

Despite being so compact, it cleans up to 800 square feet every 30 minutes, making it ideal for a bedroom, living room, kitchen, and more.

Not only does the PLUS filter capture bacteria and mold spores, but it also eliminates dust, dander, and pet allergens. During flu season, you’ll be happy to have this model, as it can significantly reduce the chance of these viruses taking up residence in your home.

The air quality light and sensor lets you know the kind of air quality your home is at currently. When used with Auto Mode, it adjusts fan speed on its own, depending on the level of contamination. It is very quiet throughout each fan speed; however, it’s slightly noisier than others on our guide.


  • Great for bedrooms
  • Compact and lightweight
  • Great for allergy sufferers/pet households
  • Beautiful design


  • Relatively low CADR rating for room size

Comparing Alen with Similar Air Purifier Brands

Alen vs. RabbitAir

Alen is significantly more powerful and capable of covering almost twice the area that RabbitAir can. We also found RabbitAir to be notably noisier, with fewer filter options, a shorter warranty, and no custom color options. On top of that, it was much less energy efficient, which will end up costing you more money.

Alen vs. Dyson

Dyson may be more affordable in most cases, but that’s only when it comes to upfront costs. Their average warranty lasts 2 years, and after that time, you may have to spend more for another air purifier unit. In contrast, Alen offers a lifetime warranty, so you never have to worry about buying another.

In addition, room coverage with Dyson is even less than with RabbitAir. There’s only 1 filter option, although you do occasionally get a couple of custom color panel options.

People Also Ask (FAQ)

How often should I replace the filters?

You should do this every 6 to 12 months, depending on the usage and the air quality in your home. A convenient way of replacing them as often as they should is by referring to the filter indicator LED light.

How much do Alencorp air purifier filters cost?

It depends on the type of filter you’re selecting, but they generally start at around $50.

Where can I buy replacement filters for Alencorp air purifier?

You can get them on Amazon for very cheap prices and quick shipping. However, you can also sign up for a filter subscription through Alencorp, which is also budget-friendly and convenient for most.

Do Alencorp air purifiers use a lot of energy?

Not at all – in fact, they use some of the least amounts of energy of any air purifiers on the market today!

How long do Alencorp air purifiers last?

They’ll last 5 years without any issues. However, Alen has you taken care of with their lifetime warranties, so even if you experience problems, you can count on them handling any issues that need to be fixed.

Is it safe to run these purifiers at all times?

It’s not only safe but actually recommended that you run them as often as possible.

How do I troubleshoot an Alencorp air purifier that has stopped working?

First, try restarting your air purifier. Next, check the filter lights to make sure your filter does not need to be changed. Also, make sure it’s correctly installed. If this does not work or you know you’ve just installed a new air filter, next try restarting the filter lights by folding down the Filter button for 5 seconds while the unit is running.