How to Use: Alen BreatheSmart FLEX HEPA Air Purifier Instruction Guide

ALEN BreatheSmart FLEX HEPA Air Purifier

Introduction

The ALEEN BreatheSmart FLEX HEPA Air Purifier offers a powerful and stylish solution for improving indoor air quality in medium to large spaces. Designed with a medical-grade H13 True HEPA filter, this purifier effectively captures 99.9% of airborne particles as small as 0.1 microns, including allergens, dust, pet dander, mold, bacteria, and smoke. Its sleek, customizable panels allow it to blend seamlessly into modern home and office décor, making it ideal for bedrooms, living rooms, and workplaces.

With the capacity to purify air in rooms up to 700 square feet every 30 minutes, the FLEX is well-suited for allergy and asthma sufferers or anyone seeking cleaner, healthier air. It operates quietly—emitting a soothing pink noise at just 25 decibels on low speed—supporting restful sleep and minimal disruption. The purifier is backed by Alen’s Forever Guarantee, ensuring long-term reliability when registered with an active filter subscription.

Priced typically in the mid to high range of consumer air purifiers (approximately $400-$600 depending on retailer and panel options), the BreatheSmart FLEX offers excellent value for its combination of advanced filtration, quiet operation, and customizable design. It is widely available online and through retail outlets specializing in home air quality solutions.

Specifications of the Alen BreatheSmart FLEX HEPA Air Purifier

• Filtration: Medical-grade H13 True HEPA filter capturing 99.9% of particles ≥0.1 microns (dust, allergens, pet dander, mold, bacteria, smoke)
• Coverage Area: Up to 700 sq. ft. with full air exchange every 30 minutes; up to 1,400 sq. ft. per hour on high
• Clean Air Delivery Rate (CADR): Approximately 225 cubic feet per minute (CFM)
• Airflow Speeds: Four fan speeds, including Turbo; noise levels ranging from 25 dB (low) to 50+ dB (Turbo)
• Power Consumption: 0.8 to 56 watts; Energy Star certified for efficiency
• Size & Weight: 25" height × 15" width × 8.5" depth; 15 lbs
• Filter Life: Up to 12 months with continuous use; filter replacement indicator with green, yellow, and red light alerts
• Design Features: Customizable designer panels (Oak, Graphite, Weathered Gray); capacitive touch controls with lock feature
• Warranty: Lifetime warranty available with product registration and active filter subscription

Compared to similar products, the Alen BreatheSmart FLEX provides higher filtration efficiency with an H13 HEPA filter versus many competitors using standard H11 or H12 filters. Its combination of large coverage area, quiet operation, and customizable aesthetics distinguishes it among mid-range to premium air purifiers.

USING YOUR AIR PURIFIER

Please Note:
The BreatheSmart FLEX has a capacitive touch panel. The buttons only operate with a quick, light touch. Holding the buttons down will not activate the controls properly. A chime will indicate that the control has registered your touch. 

Operating Your Unit:

1. Plug your air purifier into a grounded outlet.
2. Press the Power Button in the center to start the air purifier. When your unit is on, the lights will light up. To turn off the lights on your unit, press the Power Button. To turn off the air purifier, press the Power Button again after the lights have turned off.
3. FILTER Indicator — The Filter indicator has 3 lights: Green, Yellow, and Red. The Green light will be illuminated for most of the life of the filter. The Yellow light will come on shortly before your filter should be replaced. This is the ideal time to order a new filter. The Red light will be illuminated when it is time to replace the filter.
4. After changing the filter, hold the FILTER button down for 5 seconds. The Red light will be reset to Green.
5. Press TIMER to have the air purifier run for a set amount of hours (either 2, 4, or 12) before turning off.
6. Press SPEED and watch the indicator lights until the desired fan speed is achieved. Most users prefer to use the air purifier on speed 2 or 3 to balance cleaning speed and noise. If you suspect the air is particularly dirty, you should set the speed to T (Turbo).
7. Press and hold LOCK for 3 seconds to Lock/Unlock the Control Panel.

Identification of Parts 

(numbers correspond with directions on previous page): 

KNOW YOUR AIR PURIFIER

When using the air purifier for the first time in a room, we recommend that you use a higher fan speed, like speed three (3) or Turbo (T), for at least two hours in order to clean the room’s air initially. Then, we recommend that the air purifier run continuously on speed two (2) or three (3) or be set on automatic mode.

Features 

• HEPA-style filtration captures dust, allergens, and airborne pollutants
• 4 fan speeds with a 2, 4, & 12-hour timer to control air circulation
• Filter change indicator light keeps replacements on schedule
• Simple and intuitive touch button controls
• Auto-off safety feature when the front cover is removed
• Filter designed for easy replacement

CARE & MAINTENANCE

Turn The Lights Off/On

To turn the lights off on your unit, press the Power Button. The lights will go out, but the unit will not turn off. Press any button to turn the lights back on, or press the time to turn the unit off completely.

Replacing The Filter

• The Filter Indicator has 3 lights: Green, Yellow, and Red. The Green light will be illuminated for most of the life of the filter. The yellow light will come on shortly before your filter should be replaced. This is the ideal time to order a new filter. You may order a new filter at www.alencorp.com/filters or by calling 1-800-630-2396. The Red light will be illuminated when it is time to replace the filter.
• The filters used in Alen Air Purifiers are not designed to be washed, cleaned, or otherwise reused. Over time, the filters become overloaded with particles, decreasing their filtration performance. We recommend regular filter replacements to extend the life of your air purifier and maximize performance.
• The black foam layer of the filter, known as the Pre-Filter, captures large dust and hair. This layer is held on with Velcro®. Once removed, the Alen Pre-Filter can be washed or vacuumed to maintain efficient operation of the unit.

Reset the Filter Indicator
After replacing the filter, hold the FILTER button down for 5 seconds. The Red light will be reset to Green.

Why You Should Replace Your Filter

• Fulfills the terms of Alen’s Lifetime Limited Warranty, which states that the filters are required to be changed regularly to prevent excessive stress on the unit.
• You have bought an Alen Air Purifier to improve the quality of your indoor air. Changing your filters will maintain the level of air quality you require. Excessively dirty filters can compromise the level of clean air your air purifier can provide.

Alen’s AutoShip Filter Plan — Convenience, Pure Air, and Savings
Regular replacement of your filter will extend the life of your air purifier and keep your air pure.  Alen filters provide efficient filtration for 6 months of heavy usage, and 8 months of moderate usage. With Alen’s convenient AutoShip Filter Plan, your filters will be shipped FREE right to your door, exactly when needed.

Save — Get FREE SHIPPING on every filter.

Convenience — Your filters are delivered right to your door exactly when needed. Choose your desired monthly frequency and cancel at any time. 

Lifetime Limited Warranty — An Alen AutoShip plan is the convenient way to extend the life of your air purifier and benefit from the Lifetime Limited Warranty.
To sign up and save, just visit AlenCorp.com/filters or call 1-800-630-2396.

How To Replace The Filter

1. Always unplug the unit when installing a filter.
2. Distinguish the front side from the back side of the filter. The front side has a foam-like Pre-Filter attached with Velcro®.
3. Place the used filter in a plastic bag to prevent dust from re-entering the air.

TROUBLESHOOTING TIPS

How do I reset the filter indicator lights?
I put in a new filter, but the red or yellow lights are still illuminated.
After changing the filter, RESET the filter indicator by holding down the FILTER button for 5 seconds while the unit is ON. The light above the FILTER button should reset to green.

How do I find out what electric specifications my unit needs?
Please refer to the rating label on the back of the unit.  Here you will find your unit’s voltage, hertz, amps, and outlet requirements.

Can I clean the filter?
The black foam layer of the filter, known as the Pre-Filter, captures large dust and hair.  This layer is held on with Velcro®.  Once removed, the Pre-Filter can be washed or vacuumed to maintain efficient operation of the unit.  No other layers or parts of the filter can be washed, cleaned, or otherwise reused.  Please replace the filter regularly to maintain optimal performance.

I have an issue not listed in this manual.
Please visit www.AlenCorp.com and send us a message or call 1-800-630-2396 during business hours.  A customer service representative will respond to your inquiry promptly. 

What information do I need when I contact customer service for warranty?
Please refer to the rating label on the back of the unit. This rating label has your unit’s lot code and other important information we need to assist you.

LIFETIME LIMITED WARRANTY

What is covered?
Alen offers the industry’s first LIFETIME LIMITED WARRANTY program for all our air purifiers.  We warrant your Alen Air Purifier to be free from defects in materials or workmanship for as long as you own it. Register your Alen Air Purifier at www.alencorp.com/register.

What will Alen do?  
Alen will, at its option, either furnish a replacement part or replace your air purifier provided the product is determined by Alen to be defective as a result of faulty material or workmanship while in normal use.  Replacement parts or units will, at Alen’s option, be either new or refurbished.  Alen’s sole obligation under this warranty is to replace defective parts or replace your air purifier free of charge. All parts or units that are replaced become the property of Alen.

How to get service? 

• This warranty will be valid only for units in possession of the original purchaser.  Proof of purchase must be presented to Alen’s warranty service representative. To help us validate your warranty, we encourage you to register your Alen Air Purifier at www.alencorp.com/register.
• To obtain warranty service, complete our online form or call 1-800-630-2396. The defective product or part must be shipped or delivered to Alen’s authorized service center. All postage, insurance, and shipping charges are the responsibility of Alen and included in this warranty.

Your Lifetime Limited Warranty program remains in effect only if:

• Your Alen Air Purifier is operated in accordance with the instructions provided in the Alen user manual. This includes replacing the filter at least once a year to prevent excessive stress on the motor.
• Your Alen Air Purifier is connected to a proper power supply (see voltage label on unit).
• Your Alen Air Purifier shows no evidence of tampering, mishandling, neglect, accidental damage, modification, and/or repair by anyone other than authorized Alen service personnel.
• Ownership of the air purifier has never been transferred.

DISCLAIMERS/LIMITATIONS

ALEN’S LIFETIME LIMITED WARRANTY IS VALID ONLY FOR THE ORIGINAL PURCHASER AND IS INSTEAD OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR USE OR PURPOSE. ALEN’S SOLE LIABILITY WITH RESPECT TO DEFECTS IN MATERIALS AND WORKMANSHIP IN THE AIR PURIFIER SHALL BE, AT ALEN’S OPTION, TO FURNISH REPLACEMENT(S) OF THE DEFECTIVE PART(S) OR REPLACE THE AIR PURIFIER ON THE BASIS DESCRIBED ABOVE. 

ALEN WILL NOT INSTALL ANY REPLACEMENT PARTS IT PROVIDES OR PROVIDE LABOR WITH RESPECT TO THE SAME. EXCEPT AS STATED IN THE IMMEDIATELY PRECEDING SENTENCE, ALEN SHALL HAVE NO LIABILITY, WHETHER UNDER A CAUSE OF ACTION IN TORT, STRICT LIABILITY, CONTRACT, OR OTHERWISE, TO ANY PERSON FOR ANY CLAIM, INJURY, LOSS, DAMAGE OR EXPENSE (INCLUDING ANY DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL, PUNITIVE OR EXEMPLARY DAMAGES) IN ANY WAY ARISING OUT OF OR RELATING TO THE AIR PURIFIER OR ITS USE BY ANY PERSON.

SOME STATES DO NOT ALLOW LIMITATIONS ON AN IMPLIED WARRANTY OR HOW LONG AN IMPLIED WARRANTY LASTS, SO ANY SUCH LIMITATION IN ALEN’S LIFETIME WARRANTY MAY NOT APPLY TO YOU. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL OR OTHER DAMAGES , SO ANY SUCH EXCLUSIONS OR LIMITATIONS IN ALEN’S LIFETIME WARRANTY MAY NOT APPLY TO YOU. ALEN’S LIFETIME LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS. YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE. 

Pros & Cons of the Alen BreatheSmart FLEX HEPA Air Purifier

• Pros:
  • High-efficiency H13 True HEPA filter captures very fine particles, including smoke and bacteria
  • Quiet operation with pink noise helps promote restful sleep
  • Large coverage area suitable for medium to large rooms (up to 700 sq. ft.)
  • Customizable exterior panels blend with home decor
  • Long filter life (up to 12 months) and a convenient filter subscription service, lifetime warranty with registration offer peace of mind
• Cons:
  • Price is higher than entry-level air purifiers, which may deter budget-conscious buyers. ers
  • At maximum turbo speed, noise levels can be noticeable (up to 50+ dB)
  • Some users report a learning curve with the touch control, rolls requiring light taps rather than presses
  • Replacement filters are proprietary and can be costly if not enrolled d in a subscription
• Value for Money: Given its advanced filtration, quiet performance, and stylish design, the Alen BreatheSmart FLEX HEPA Air Purifier represents strong value for those prioritizing air quality and room coverage in a modern form factor.
• Alternatives: Lower-priced models like the Levoit Core 300 offer quieter operation at smaller coverage, while higher-end models such as Molekule Air Pro provide additional technologies (PECO) but at a significantly higher price point.

Customer Reviews and Feedback on the Alen BreatheSmart FLEX HEPA Air Purifier

Users consistently praise the Alen BreatheSmart FLEX HEPA Air Purifier for its effective allergen and odor removal, quiet operation, and stylish design. Many highlight improvements in allergy and asthma symptoms, noting the purifier’s ability to reduce dust and pet dander in their living spaces. The customizable panels receive positive remarks for fitting into various room aesthetics.

Common complaints include the noise level at the highest fan speed, which some users find intrusive, and the touch controls, which require a light tap rather than a press, occasionally causing frustration. Filter replacement costs are also occasionally mentioned, but the filter subscription program is appreciated for convenience.

Overall, the product maintains an average rating of about 4.5 out of 5 stars across major retailers. Many recommend the Alen BreatheSmart FLEX for medium to large rooms and for individuals seeking a balance of performance, style, and quiet operation.