Alen Air Purifier Review: User-Friendly and Efficient

Alen is an air purifier company that is known for making models that are designed to be energy-efficient, user friendly, and specifically designed for a particular need. With every new model being released, they always keep in mind what are the improvements that the customers want most. Recently, they had introduced something called a designer panel which will allow you to customize the purifier to complement the theme of your home. They are also the first company to offer a “Forever Guarantee” in the air purification industry which is a lifetime warranty. Their customer service is so knowledgeable about the filters and can recommend what suits your needs.

We will take a look at one of Alen’s newest product, the BreatheSmart 45i Air purifier. A lot of customers had given great reviews regarding this product. It is one of the best performing air purifiers in the market and costs around $450.

Filtration Process

One of the most talked-about features of this device is the HEPA-silver filter it uses. The HEPA-silver filter can filter mold, allergens, dust, fungi, and pet dander. The BreatheSmart 45i follows a three-stage filtration process. The first stage involves a pre-filter that initially filters the air from unwanted particles. The second stage is a HEPA filter which can be customized based on your needs. There are actually different filters you can choose from. The third stage would be an optional ionizer which you can turn off if it is not needed.

The filters used by the BreatheSmart 45 are designed with an antimicrobial coating that can prevent the growth of molds and fungi. The pre-filter is actually made of activated carbon which has the ability to remove the unwanted odor from the air. It can also remove the smell of chemicals as well as odors from cooking which is a great thing since it can be placed in the kitchen.

There are four speeds from which the user can choose from. A great advantage of this product is that even at the highest fan speed, the filtration is really efficient while keeping a low noise level. The filtration CADR rating for dust, smoke, and pollen is 208, 194, and 230, respectively.

This brand is so well known for its ability to trap harmful particles in the air while at the same time keeping its ability to actually purify the air in a room size of 800 square feet. There are four HEPA-style filters to choose from according to the customer’s needs. These include “Pure” which is a standard filter, “Fresh” which utilizes activated carbon to trap odor, “Silver” which has anti-microbial properties and “OdorCell” that can break down harmful molecules in the air. The testing of Alen’s products had shown 99% of particles have always been successfully filtered even as small as 0.3 microns.

Technical Specification 

  • This design is both smooth and minimalistic. You can even design it to compliment the theme of your home by choosing from the 14 designer panels available.
  • It is quite light weighing only 20 pounds.
  • The control panel had been designed to be user friendly. Each button is clearly labeled which makes it easy to use. 
  • The Maximum Area Coverage is really good for its price and measures approximately 800 square feet.
  • With the great area coverage that it has, the overall dimensions of this model are not too big, unlike other models that produce the same level of performance.
  • Uses WhisperMax technology which helps lower the noise level of the air purifier. The noise levels of effective air purifiers had always been a problem and Alen had fixed this by using WhisperMax technology.

  • Equipped with an LED display that shows the air quality of the room.
  • Equipped with an air quality sensor that uses laser smart technology. The lasers have the ability to detect microscopic particles 300x smaller than a single strand of human hair.
  • Uses a true HEPA filter that can remove 99.97% of pollutants in the air. 
  • Has a child lock settings that can be activated so that children will not be able to mess up the air purifier’s settings.
  • This model is an energy star certified which means it does not consume a lot of electricity.
  • It has a filter change indicator to alert you whenever the filter needs to be replaced.
  • Low noise level with 55 dB being the maximum.
  • It is light for this level of performance and only weighs 15 pounds.
  • The dimension of the device is 15 inches x 25 inches x 8.5 inches.
  • The timer settings available are for 2 hours, 4 hours, 8 hours, and 12 hours. 
  • Maximum airflow speed of 245 cubic feet per minute.
  • The CADR rating is at 245.
  • Four fan speed to choose from.
  • It has a lifetime warranty.

Advantage versus other Models

One of the reasons why a lot of customers are looking for air purifier models under the Alen brand is because they are the first in the market to offer a Lifetime warranty. This is a great thing since air purifiers actually cost a lot of money. They have even designed their own HEPA filters that are each specifically made for a particular problem.

This model is equipped with the latest technology for air purifiers. It is equipped with an air quality sensor that can continuously monitor the quality of the air being fed into the device. Based on the data it had read, it can automatically adjust the purification settings to effectively clean the air. A real-time data of the reading on the air quality can be seen on the small LED screen. It also has a child lock setting that can be used to prevent the children from playing with the settings when it is left turned on at home.

The coverage area of this model is also amazing. It can clean the air in a room with a size of 800 square feet and still stay efficient. It is an outstanding number for a model sold at this price. Also, it uses WhisperMax technology to lessen the noise when it is turned on. The noise level from air purifiers is one of the problems customers are complaining about, but Alen had developed a technology to solve this problem.


The BreatheSmart 45i has got to be one of the best air purifiers in the market today. From its sleek design, performance, area coverage, and the technology it uses, it really is hard to look for another purifier to compare it to at this price. It is very efficient in removing allergens, impurities, contaminants, germs, from the air and filtering hair, dust, mold, spores, mildew, fungi, pet dander, and the likes. You can even customize the design of this product to complement your home theme.

It is one of the very few products in the market that comes with a lifetime warranty. Overall, this product is really great in terms of efficiency, energy consumption, functionality, performance, and coverage. The flex filter that it uses can even last up to one and a half years. If you are looking for an air purifier that will serve you value for a long time, this is the one you are looking for.