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Model #BreatheSmart-FLEX-Pure-WeatheredGray

Customizable Air Purifier with HEPA-Pure Filter to Remove Allergies and Dust in Weathered Gray

Product Overview

The Alen BreatheSmart FLEX is ideal for most living spaces including living rooms, bedrooms, nurseries, laundry rooms, guest rooms, bathrooms, offices, kitchens, basements and more! FLEX cleans 700 SqFt twice an hour and is lightweight for easy mobility. Alen’s True HEPA Pure filter removes airborne allergens like dust, pollen, mold, fur, dander, and odors as well as bacteria and virus particles. The True HEPA H13 medical grade filter captures 99.99% of airborne particles down to 0.1 microns. Engineered by air-flow experts, as the air moves out the machine it emits a quiet, pink noise frequency, at a comfortable volume which is barely noticeable and is often referred to as soothing. FLEX is a sleek air purifier with a modern and stylish design to fit into any décor! The FLEX is can be used in any flex space where you need pure clean air. Note: BreatheSmart FLEX is a basic unit and is not equipped with a smart sensor or auto mode.
  • CLEANS AIR FAST: Cleans 700 SqFt every 30 minutes, twice as fast as key competitors on Turbo speed.
  • TRAPS ALLERGENS AND POLLEN: True HEPA filter captures dust, dander, allergens, fur, household odors as well as mold, bacteria, and other airborne particles. Helps relieve allergy and asthma symptoms.
  • THICK TRUE HEPA FILTER: H13 medical grade filter to capture 99.99% of airborne particles down to 0.1 microns. Long filter life compared to other smaller, less dense filters.
  • SLEEP BETTER: Features a “lights out mode”, press the power button once and the lights turn off. The soft sound of air flowing creates a soothing environment while producing a pink noise that promotes better deeper sleep.
  • LOW ENERGY CONSUMPTION: 36 Watts on Turbo speed. Lowest setting will use less than 50 cents a month in electricity.
  • SLEEK DESIGN: Fits in spaces from small to large bedrooms, to classrooms and offices, with designer inspired color options and a modern style.
  • Click here to learn more about Eco Options and Energy Efficiency
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Maximum coverage area (sq. ft.)700700700800
Air Purifier TypeTowerTowerTowerTower
Primary Filter TypeHEPA - TrueHEPA - TrueHEPA - TrueHEPA - True
CADR (Clean Air Delivery Rate)G-17-088G-17-088G-17-088N/A
Package SizeIndividualIndividualIndividualIndividual
Control TypeTouchTouchTouchDigital
View ProductView ProductView ProductView Product



Maximum coverage area (sq. ft.)
Product Depth (in.)
8.5 in
Product Height (in.)
25 in
Product Width (in.)
15 in


Air Purifier Features
Air Purifier Type
Air Treatment Product Type
Air Purifier
Appliance Category
Air Purifiers
Automatic shutoff
CADR (Clean Air Delivery Rate)
Color Family
Control Type
Effectiveness (%)
Filter/bulb monitor
Filtered or Filterless
HEPA Filter
Number of Air Filters Included
Number of Air Purifers (Per Pack)
Number of cleaning stages
Number of Fan Speeds
Pack Size
Package Size
Primary Filter Type
HEPA - True
Product Weight (lb.)
15 lb
Remote Control
Removes bacteria
Removes dust
Removes mold
Removes odors
Removes particulates
Removes pollen
Removes viruses
UVC lamp
Voltage (volts)
Wall Mountable

Warranty / Certifications

Certifications and Listings
ETL Listed
Manufacturer Warranty
Limited Lifetime Warranty. Please see manufacturer's website for details.

Questions & Answers


If the unit runs continuously, what is impact on monthly electric bill?

Asked by Arthur April 9, 2021

Does this come with a warranty?

Asked by somy11 March 30, 2021

Description says it removed odors. The specifications say it does not. Which is true?

Asked by Val February 7, 2021

Hello, we purchased this air purifier in October and today checked the filter. It was really dirt...

Asked by Michelle January 4, 2021

Generally, you will have to buy new filters as these can’t be washed. I’ve been using 45i and 75i models and if it’s dust/hair outside of the mesh directly from intake, I run my hand across it and clean it out as I would a dryer lint catch. The hepa filter sides have stayed clear and clean for me so far. I still change out the filters whenever the unit tells me I should. alen has a subscription service available on their website.

Do you have to replace the filter? If yes, where to buy new filters? Thanks!

Asked by Gaelle August 11, 2020

Hi Gaelle, thank you for your inquiry. The filters should be changed every 9-12 months. We offer a replacement filter on Homedepot.com. I have provided a link to the item below. We appreciate your business and look forward to serving you in the future. Thank you for shopping Home Depot! https://www.homedepot.com/p/Alen-FLEX-HEPA-Pure-Replacement-Filter-addresses-Allergies-Asthma-and-Dust-FL40/303530692

Do you give military discounts and how much for this item?

Asked by Theresa June 9, 2020

Thank you for your recent inquiry with The Home Depot. We offer a Military Discount for in-store purchases of in-stock items and does not apply to online transactions. Please note that a valid Military ID must be presented at the time of purchase and the owner of the ID must be the purchaser present. We appreciate your business and look forward to serving you in the future. Thank you for your service to our country and shopping with us. -The Home Depot-

does the unit come with a reusable washable filter or replaceable throw away filters?

Asked by norm May 30, 2020

Yes, this unit comes with a reusable filter.

how many sq/ft can cover

Asked by pat March 10, 2018

The coverage is up to 700 sq. ft.

What is the cfm for the clean air delivery rate?

Asked by SMM March 9, 2018

Hello Shawn, Thank you for reaching out. Our FLEX air purifiers have a CADR of 245 (per Energy Star Test). CFM (airflow in Cubic Feet per Minute) of Speed 1: 53 CFM; Speed 2: 135 CFM; Speed 3: 147 CFM; Turbo: 187 CFM Let me know if I can assist further. Have a great day, Janellyn

Does this unit include cleaning ammonia absorbsion,as I have many cats

Asked by joe October 6, 2017

Hello Joe, Thank you for reaching out to us. The unit listed only has a Pure filter so it would not remove any odors. You would need to purchase an OdorCell filter which is formulated for the removal of pet odors. Let me know if I can assist any further. Thank you for choosing Alen as your clean air provider and have a great day. Best Regards, Janellyn Alen Dealer and Marketplace Coordinator

Customizable Air Purifier with HEPA-Pure Filter to Remove Allergies and Dust in Weathered Gray - page 2

Customer Reviews

  • 4.9
    out of 381 reviews
  • 100% recommend this product
Filter by:
Showing 1-10 of 381 reviews
Amazing product! Makes the air
Amazing product! Makes the air feel and look so clean! I can feel a giant difference. The customer service is impeccable. The purifier is beautiful to look at and fits right in with any decor. The air filter is amazing and does its job to the maximum. I’m so happy I made this purchase and recommend an Alen purifier 100%....
by Mona M.
Wild Fire Relief
Quiet, modern design, easy to operate, this air purifier is a hit around our house, especially since we have experienced the effects of multiple local wild fires. We run it 24/7 to keep our home’s air breathable and healthy. My only concern is that there is no way to actually measure the air quality in the house. Our peace of mind is anecdotal at best, but we do feel better.
by Jill P.
Great Addition to my home
This air purifier has been a blessing, it has made it easier for us to enjoy everyday. We just moved to a high rise and our allergies began to kick in, after the arrival of our air purifier out allergies settled down. Thank you.
by Marian R.
Best purchase
This product has been running for a month. Our bedroom was so dusty but with the Alen the air quality is improved and my husbands CPAP filters are lasting longer. I’m glad we are on filter subscription. Thank you Alen..
by Terri B.
High quality, effective, quiet and stylish
This is our 2nd Alen air purifier. It worked so well for our son's allergies that we bought another one for our bedroom. We love this product. My husband notices a big improvement in his allergies (much less congested). I'm impressed with the quality, design and it's super quiet.
by Erika H.
Lives up to the hype
Got this for my home office, which is a very small room that's really more like finish attic space, and doesn't get any air flow so really needs this purifier. It arrived quickly, basically no set up needed. Very easy to use and I really like the feature where I can tap to turn off the display while the machine runs. Only change I would make is timer options--currently there's 2,4, & 12. 8 would be perfect for me in my office, and for the second one I'm about to purchase for my bedroom. It's certainly quieter than any other air purifier I've gotten and I'm very happy with it.
by Kelly D.
Allergies and pollen
We love our new air purifier! With two goldens, a lab, and now spring pollen it was greatly needed, and has made an incredible reduction in my allergies. Now to get a small purifier from Alen for the bedroom!
by Margy R.
Really like the purifier can’t
Really like the purifier can’t smell the cat in the apartment
by Debra H.
Breathing easy in an old building
This air filter works very well in our old church. As someone with environmental allergies who is in the office all day every day, I really appreciate how well this unit is working for us. It's quiet, blends in well with our cabinets, and I love how well it works. Definitely recommend.
by Mina B.
It's quiet, it's beautifully-designed and
It's quiet, it's beautifully-designed and I assume it's doing its work well!!
by Julia B.
Showing 1-10 of 381 reviews