BreatheSmart FLEX

Name: BreatheSmart FLEX
Brand: Alen
SKU: 21620
Price: 299.00 USD
Availability: InStock
Rating: 4.8 (934 reviews)

$299 ~~$349.00~~

BreatheSmart FLEX

$299 ~~$349.00~~

BreatheSmart FLEX

$299.00 ~~$349.00~~

Sale HSA|FSA Eligible

Purifies air up to 700 sq ft every 30 minutes (1,400 sq ft per hour) White / Pure

The Alen BreatheSmart FLEX: Stylish, Powerful Air Purification for Medium to Large Spaces

The Alen BreatheSmart FLEX offers effective air purification for rooms up to 700 sq ft every 30 minutes (1,400 sq ft per hour) on high, making it ideal for bedrooms, living rooms, and offices. With a sleek design and customizable panels, the FLEX blends style with functionality to fit seamlessly into your home.

Featuring, True HEPA Filtration: The medical-grade H13 HEPA filter captures 99.9% of particles down to 0.1 microns, removing dust, allergens, pet dander, mold, bacteria, and more—ideal for allergy and asthma relief.

Wide Coverage: Purifies spaces up to 700 sq ft every 30 minutes, making it suitable for medium to large rooms.

Quiet Operation: Runs quietly at 25 dB on low and up to 50 dB on Turbo, emitting soothing pink noise that supports restful sleep.

Customizable Design: Available in designer panel options like Oak, Graphite, and Weathered Gray, allowing it to match any decor.

Easy Filter Maintenance: The filter lasts up to 12 months with continuous use. Sign up for Alen’s Filter Subscription for hassle-free replacements.

Backed by Alen’s Forever Guarantee with registration and active filter subscription, the FLEX is a reliable and stylish solution for cleaner, healthier air.

CADR i Clean Air Delivery Rate

225

CFM i Cubic Feet per Minute

Speed 1: 53 CFM | Speed 2: 135 CFM | Speed 3: 147 CFM | Turbo: 187 CFM

Coverage

Up to 700 SqFt (65.03 m2) | Cleans all air in room every 30 minutes @ highest setting

Dimensions

H 25" (63.50 cm) x W 15" (38.10 cm) x D 8.5" (21.59 cm)

Energy star i Products/Homes/Buildings that earn the ENERGY STAR prevent greenhouse gas emissions by meeting strict energy efficiency guidelines set by the U.S. Environmental Protection Agency and the U.S. Department of Energy

Yes

Filter cost

$69 | Using "Pure" Air Filter

Filter life max

12 months | @ Recommended 24hr/day operation

Filtration rate

Removes 99.9% of particles greater than 0.1 micron

Noise level

Lowest Speed 25 dBa | Highest Speed 50 dBa

Ozone

N/A (No Ionizer)

Power consumption

.8 to 50 watts

Power supply

120 AV, 60HZ (2 Prong Power Cord) | Cord length: 7ft 8inches (233cm)

Sensor

N/A (No Air Particle Sensor)

Sound type

Pink Noise | All speeds

Speed settings

Warranty

Lifetime | with Product Registration & Active Air Filter Subscription

Weight

15 lbs (6.8 kg)

BreatheSmart FLEX air purifier
HEPA Pure air filter
Designer panel (optional)
Quick start guide

FAST, Free Shipping. Alen offers free FedEx ground shipping within the Continental US. Additional shipping costs apply to Alaska, Hawaii, and Puerto Rico. For available options, add items to your cart and enter shipping details. Continental US orders typically arrive in 2-5 business days, while shipments to other locations may take 7-10 business days. Shipping times may be longer during peak seasons. Learn more.

60 Days to Love It or Return It. Try our Alen Air Purifiers and see for yourself why our customers are raving about them! And the best part, we offer a 60 Days Love It, or Return It guarantee. We are so confident you are going to love our air purifiers, we'll give you 60 days to try them out! Learn more.

Alen offers the industry's first and only Forever Guarantee to ensure your purifier provides Pure Air for Life. To maintain this guarantee, customers must register the product and either subscribe to an air filter replacement plan or provide proof of annual filter purchases. If an issue arises and can't be resolved by troubleshooting, Alen will replace the unit free of charge. Learn more.

Frequently Asked Questions

Reviews

What is the Alen filter capturing?

Select filter below:

Pure

HEPA

Just regular old dust contains a plethora of irritants that can cause inflammation, increase allergy symptoms, and leave you feeling less than your best. Alen captures 99.9% of those irritants (even the really tiny ones).

We capture 99% of:

Bacteria
Dead Skin
Dust Mites
Soil
Pet Dander
Dead Insects
Pollen
Hair
Fibers

Perfect for:

Pet Owners
Allergy Relief
Capturing Mold Spores
Airborne Particles

Still unsure? Take our quiz

Fresh

HEPA + Carbon

Protection Against Chemicals, VOCs, Smoke. Reduce common household dust. Specifically crafted to neutralize and eliminate kitchen and household odors.

Everything that Pure captures, plus:

Cooking Odor
VOC
Pet Odor
Diaper Odor
Garbage Odor
Cigar Smoke

Perfect for:

Airborne Particles

Still unsure? Take our quiz

Odor

HEPA + Odor neutralizer

Conquer Pet Odors & Pet Dander with Ease. Destroys odors not just on the surface, but at the molecular level. Targets and absorbs stubborn pet odors, even urine and fecal odors. Specifically formulated to target and neutralize pet, diaper, and stubborn household odors.

Everything that Pure captures, plus:

Cooking Odor
Diaper Odor
Pet Odor
Garbage Odor

Perfect for:

Airborne Particles

Still unsure? Take our quiz

VOC/Smoke

HEPA + Extra Carbon

Protection Against Chemicals, VOCs, Smoke. Captures 99.9% of harmful particles, including VOCs and chemicals. With over 2.3 lbs. of activated carbon, it absorbs strong odors and smoke. Specially designed to tackle smoke-related pollutants and odors.

Everything that Pure captures, plus:

Cigar Smoke
VOC
Wildfire Smoke
Chemicals
Carbon Monoxide
Soot

Perfect for:

Airborne Particles

Still unsure? Take our quiz

PERFECT FOR MEDIUM ROOMS UP TO 1,400 SQ FT

Designed for bedrooms, offices, and other medium-sized spaces, the Alen FLEX efficiently purifies 700 sq ft - 1,400 every 60 minutes on high speed. Its compact size, quiet performance, and customizable panels make it a seamless addition to any room.

Perfect for medium/small rooms up to 1,600 sq ft

Perfect for purifying large spaces including living rooms, kitchens and master bedrooms up to 1,600 sq ft. This powerful yet whisper-quiet air purifier ensures every corner of your room is filled with clean, fresh air.

Perfect for large rooms up to 2,800 sq ft

Perfect for purifying large spaces including living rooms, kitchens and master bedrooms up to 2,800 sq ft. This powerful yet whisper-quiet air purifier ensures every corner of your room is filled with clean, fresh air.

Perfect for medium/small rooms up to 1,000 sq ft

Perfect for purifying small spaces up to 1,000 sq ft @ one hour and 500 sq ft every 30 minutes. Power-packed BreatheSmart 35i: our most compact, most affordable smart purifier yet.

Compare vs Other Models

Currently Viewing

BreatheSmart FLEX

Coverage: 700 to 1,400 sq ft

Currently Viewing

BreatheSmart 45i

Coverage: 800 to 1,600 sq ft

Currently Viewing

BreatheSmart 75i

Coverage: 1,400 to 2,800 sq ft

Currently Viewing

BreatheSmart 35i

Coverage: 500 to 1,000 sq ft

Coverage

1,400 to 2,800 sq ft

App Controlled

Yes

Compatible filter types

Pure - best for allergens
Fresh - best for smoke & harmful chemicals
Odor - best for neutralizing household odors

What’s Included?

BreatheSmart 75i air purifier
HEPA filter (options with carbon also available)
White panel (designer panels available for purchase)
Quick start guide

Coverage

800 to 1,600 sq ft

App Controlled

Yes

Compatible filter types

Pure - best for allergens
Fresh - best for wildfire smoke & harmful chemicals
Odor - best for neutralizing odors
VOC/Smoke filter - best for gasses from smoke & harmful chemicals

What’s Included?

BreatheSmart 45i air purifier
HEPA filter (options with carbon also available)
White panel (designer panels available for purchase)
Quick start guide

Coverage

700 to 1,400 sq ft

App Controlled

Compatible filter types

Pure - best for allergens
Fresh - best for wildfire smoke & harmful chemicals
Odor - best for neutralizing odors
VOC/Smoke filter - best for gasses from smoke & harmful chemicals

What’s Included?

BreatheSmart FLEX air purifier
HEPA filter (options with carbon also available)
White panel (designer panels available for purchase)
Quick start guide

Coverage

500 to 1,000 sq ft

App Controlled

Yes

Compatible filter types

Pure - best for allergens
Fresh - best for smoke & harmful chemicals

What’s Included?

BreatheSmart 35i air purifier
35i HEPA air filter
Quick start guide

Coverage

Up to 500 sq ft coverage at a one hour air exchange*

App Controlled

Compatible filter types

Pure - best for allergens

What’s Included?

T500 air purifier
True HEPA-Pure air filter
Quick start guide
Owner's Manual

Stay Connected With Your Alen App

Available on:

FAQs

What room size is the Alen BreatheSmart FLEX designed for?

The FLEX is designed to purify spaces up to 700 sq ft every 30 minutes on high speed, or 1,400 sq ft per hour, making it ideal for medium to large rooms such as bedrooms, living rooms, and offices.

How effective is the FLEX at removing allergens and other airborne particles?

The FLEX uses a medical-grade H13 True HEPA filter that captures 99.9% of particles down to 0.1 microns, including allergens, dust, pet dander, mold, and bacteria, providing powerful relief for allergy and asthma sufferers.

How noisy is the FLEX during operation?

The FLEX operates quietly, with noise levels ranging from 25 dB on the lowest setting to 50 dB on Turbo. It also emits soothing pink noise, which can help mask other sounds and support restful sleep.

Can I customize the appearance of the FLEX to match my home decor?

Yes, the FLEX offers multiple designer panel options, including Oak, Graphite, Weathered Gray, and Espresso, allowing you to choose a look that best fits your style.

How often should I replace the filter on the FLEX?

For optimal performance, replace the FLEX’s True HEPA filter every 9-12 months, depending on usage. You can also sign up for Alen’s Filter Subscription Service to receive automatic replacements.

Does the FLEX emit ozone?

No, the FLEX does not produce ozone and does not have an ionizer, making it a safe choice for maintaining healthy indoor air quality.

What is the Alen Forever Guarantee for the FLEX?

The FLEX is backed by Alen’s Forever Guarantee when you register the product and maintain an active filter subscription, providing lifetime coverage for repairs or replacements.

How do I reset the filter indicator on my FLEX?

After replacing the filter, hold down the FILTER button for 5 seconds while the unit is on. This will reset the indicator light to green, signaling that the filter replacement is complete.