Alen BreatheSmart Air Purifier

Last updated date: July 26, 2019

DWYM Score
9.5

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We looked at the top 1 Air Purifiers and dug through the reviews from 4 of the most popular review sites including BestReviews, Top Ten Reviews, The Air Geeks, Blooming Air and more. Through this analysis, we've determined the best Air Purifier you should buy.

Overall Take

For living rooms or wide open office spaces, the Alen BreatheSmart comes in as one of the best bets — in fact, it's the No. 1 overall recommended product. Efficiency is one of the biggest draws for this one, thanks to a Smart Sensor that not only keeps you apprised of the air quality but adjusts the fan speed to fit the job. In our analysis of 48 expert reviews, the Alen Alen BreatheSmart Air Purifier placed 1st when we looked at the top 10 products in the category. For the full ranking, see below.

Editor's Note August 12, 2019:
Checkout The Best Air Purifier for a detailed review of all the top air purifiers.

Expert Summarized Score
9.7
4 expert reviews
User Summarized Score
9.2
522 user reviews
Our Favorite Video Reviews
What experts liked
Stands out for SmartSensor technology that adjusts airflow automatically to best remove impurities. Lifetime warranty.
- BestReviews
The BreatheSmart has a sophisticated filter monitor and air sensor, which helps this model clean pollen and dust in mid-size to large rooms.
- Top Ten Reviews
The BreatheSmart comes in different colors and offers different filters to meet the unique preferences of different users.
- The Air Geeks
The greatest thing about this product is that it is very easy and simple to use.
- Blooming Air
June 2, 2017 | Full review
What experts didn't like
It is Expensive of what you get and it also requires costly replacement filters
- BestReviews
The optional ionizer can be harmful to lungs, especially if you have breathing-related issues.
- Top Ten Reviews
The true HEPA filter is capable of capturing a greater percentage of airborne pollutants than an ordinary HEPA filter.
- The Air Geeks
However, the noise is something that comes with most of the product that has a powerful fan.
- Blooming Air
June 2, 2017 | Full review

From The Manufacturer

Perfect for large family rooms and open concept spaces, the Alen BreatheSmart Classic air purifier offers an 1,100 SqFt coverage area. Alen’s HEPA-Pure Filter is best for removing airborne allergens and dust. You’ll receive: 1 BreatheSmart Classic air purifier, 1 HEPA-Pure Filter, 1 Graphite panel, and Forever Guarantee (Lifetime Warranty).

Overall Product Rankings

1. Alen BreatheSmart Air Purifier
Overall Score: 9.5
Expert Reviews: 4
2. Coway Mighty Air Purifier
Overall Score: 9.3
Expert Reviews: 10
3. IQAir HealthPro Plus Air Purifier
Overall Score: 9.0
Expert Reviews: 3
4. AirMega 400 Air Purifier
Overall Score: 8.9
Expert Reviews: 3
5. Blue Pure 411 Air Purifier
Overall Score: 8.6
Expert Reviews: 4
6. Blue Pure 211+ Air Purifier
Overall Score: 8.6
Expert Reviews: 5
7. GermGuardian Full Room Air Purifier
Overall Score: 8.5
Expert Reviews: 5
8. Whirlpool Whispure Air Purifier
Overall Score: 8.1
Expert Reviews: 4
9. Honeywell True HEPA Allergen Remover
Overall Score: 7.6
Expert Reviews: 4
10. Austin Air Healthmate Standard Air Purifier
Overall Score: 6.6
Expert Reviews: 2

An Overview On Air Purifiers

The reasons for buying an air purifier can be as numerous as the number of pollutants in the air — and indoors, that number tends to be bigger than most people would expect. Despite the best efforts of the filters in our air conditioners, pollen and dust particles can settle into carpets and upholstery. Mold spores can grow in moist areas. And if there are pets or smoke involved, expect dander and carcinogens to be part of every breath.

Whether you suffer from allergies or just want to eliminate the smell associated with all this particulate matter, a good air purifier can be an essential accessory in any room. But how are they different from the filters we already have in our regular AC?

All that depends on the purifier. Most models circulate air through a HEPA (High-Efficiency Particulate Air) filter, and often more than one. HEPA filters are certified to trap particulate matter as small as 0.3 microns, which covers dust, pollen and most bacteria. Some purifiers boast a medical-grade Hyper-HEPA filter that will go down to 0.003 microns — enough to pick smoke out of the air.

In conjunction with this, the more high-tech air purifiers can employ an extra line of defense. The Germ Guardian uses an optional UV light that renders many micro-organisms sterile, and an activated charcoal filter that can actually pull in and neutralize toxins through electrostatic attraction. There are also models like the Coway Mighty Air Purifier that can ionize incoming particles, which are then sucked in by metal plates or other treated substances.

A word of caution on ozone, though. While they’re less common these days, some air purifiers generate ozone, which, according to the manufacturers, can deodorize and disinfect the air. The jury is still out on those claims, and in fact the presence of ozone in confined spaces can be more harmful than the pollutants you’re trying to get rid of.

For a measure of general effectiveness, you can look for a rating on most air purifiers called the CADR — Clean Air Delivery Rate. It’s a number that represents the cubic feet per minute (CFM) of air that has been cleared of all the particles of a given size. These ratings are recognized by the EPA and can be found on most devices. If you can’t find them, the number is fairly easy to calculate: Just take the CFM on the air purifier and multiply it by the percentage of a certain particle (smoke, pollen, etc.) that the machine can remove.

DYWM Fun Fact

That air purifier humming away in the corner of your room may look tranquil, but it was initially created for military use. The HEPA filters that are so common today were first employed to keep lab workers safe at the Manhattan Project, the 1940’s scientific effort that led to the creation of the atomic bomb. Back then, scientists were less concerned with their ability to keep their allergies in check. They were using the filters to block out as much radioactive material as possible.

The Air Purifier Buying Guide

  • One of the first things you’ll want to consider when buying an air purifier is the kind of room you’ll be using it in. When it comes to price, this is usually the primary factor. A workhorse unit that can handle an entire living room and kitchen is going to run you significantly more than a machine that’s meant for a home office (the Coway Mighty) — for good reason.
  • Are you looking for protection from allergies or just need to freshen up the air? A quick look at the specs for the purifier should tell you what particles it can effectively remove from the air. Again, a HEPA filter is going to do the trick for most common irritants and odors, including pet hair and dust. But if you live in a smoker’s house, look into something more robust.
  • Much like your air conditioner, you’ll likely be keeping an air purifier on for as long as you plan on breathing the air in that room. In a lot of cases, that might be all day, so power consumption matters. Frugal users might want to check out the wattage specs on prospective models. There are also features that can mitigate that electricity drain, such as timers. In most cases, your air purifier won’t be running all the time. It’ll cycle the air through a few times an hour, and you can adjust that number more or less with most models. The Alen BreatheSmart does one better, with a handy sensor that measures the air quality in the room and automatically adjusts the fan speed and cycle time to match its needs.
  • Another thing to figure into your price point are the filters. Like your AC, there’s upkeep involved. Check not only the price of your filter, but the frequency with which you’ll need to replace it.
  • Since they’re meant for indoor use, most air purifiers are better looking than, say, that wall AC unit you had in your dorm room at college. That said, few people want them as the focal point in a room. If you’re getting one for a small room, you likely want a small purifier — or at least one that’s nondescript. Sleekly designed at less than 17″ x 19″, the Coway Mighty fits the bill on both counts.