BreatheSmart 45i

$518
BreatheSmart 45i
We recommend the product and filter below.

BreatheSmart 45i

Product Description

Our mid-sized air purifier is ideal for large master bedrooms, open living and kitchen spaces in apartments, townhomes, or smaller houses. 

For busier lifestyles with children and pets, we recommend aiming for the two air exchange rate at 950 sq ft. of coverage when determining which unit best fits your needs. Higher traffic areas generally benefit from powerful units with more coverage.

$449.00
We recommend the product and filter below.
Skip to product information
1 of 36

BreatheSmart 45i

BreatheSmart 45i

HSA|FSA Eligible ? *One-time purchase only

Our mid-sized air purifier is ideal for large master bedrooms, open living and kitchen spaces in apartments, townhomes, or smaller houses. 

For busier lifestyles with children and pets, we recommend aiming for the two air exchange rate at 950 sq ft. of coverage when determining which unit best fits your needs. Higher traffic areas generally benefit from powerful units with more coverage.

Regular price $449.00
Sale price $449.00

Customize to your style and needs

Design

Customize your purifier to match your aesthetic.

Our top-tier filter. ​Combines a medical-grade HEPA filter with our proprietary carbon catalyst blend to deliver advanced filtration for chemicals and VOCs, smoke, pollutants, odor, mold, and pet-filled homes.​

Recommended
$89.10
  • Save 10% on future filter refills
  • Skip, modify, or cancel anytime
  • Worry-free delivery every

I'll subscribe later

Our Forever Guarantee policy requires the use of Alen filters for your purifier. Learn More

  • BreatheSmart 45i air purifier 
  • 45i HEPA air filter
  • Designer panel (optional)
  • Quick start guide
  • User manual
  • Power adapter

CADR i Clean Air Delivery Rate.

255

CFM i Cubic Feet per Minute

Speed 1:80 CFM | Speed 2: 120 CFM | Speed 3: 190 CFM| Speed 4: 255 CFM

Coverage

Covers up top 1,900 sq ft every hour or 950 sq ft every 30 minutes

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 "Essential (Pure)" Air Filter

Filter life max

@ Recommended 24/7 operation Essential (Pure): 9-12 months Advanced (Fresh)/Ultimate (Odor): 6-8 months

Filtration rate

Removes 99.9% of particles greater than 0.1 micron

Ionizer

Yes

Noise level

Lowest Speed - 24 dB | Highest Speed - 50 dB

Ozone

Less than 0.001 PPM with optional ionizer engaged, 0 PPM when disengaged

Power consumption

1.6 to 64 watts

Power supply

24V, External Power Supply

Sensor

Automatic speed adjustment and coordinated to 5 color rings/ 4 speeds

Sound type

Pink Noise | All speeds

Speed settings

4

Warranty

Forever Guarantee | with Product Registration & Active Air Filter Subscription

Weight

14 lbs (6.4kg)

We offer standard payment options with credit or debit card, PayPal, GPay, and Apple Pay, in addition to Buy Now, Pay Later options that are available with ShopPay. FSA/HSA payment is available to eligible customers through Flex.

View full details

The Alen BreatheSmart 45i is the ultimate solution for tackling air quality concerns in large spaces. Here's why it stands out:

Advanced Filtration: Removes 99.9% of particles greater than 0.1 microns

Ideal for your concerns: Perfect for medium rooms (1600sq/ft) with allergies, asthma, smoke, and odor concerns.

Quiet Operation: Powerful yet whisper-quiet at 49 db maximum noise for non disturbance sleep.

Smart Features: Color-coded air quality indicator. Control and monitor anywhere using your Alen App.

Customizable Design: Sleek look with customizable panels to fit any décor.

CADR i Clean Air Delivery Rate

255

CFM i Cubic Feet per Minute

Speed 1:80 CFM | Speed 2: 120 CFM | Speed 3: 190 CFM| Speed 4: 255 CFM

Coverage

Covers up top 1,900 sq ft every hour or 950 sq ft every 30 minutes

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 "Essential (Pure)" Air Filter

Filter life max

@ Recommended 24/7 operation Essential (Pure): 9-12 months Advanced (Fresh)/Ultimate (Odor): 6-8 months

Filtration rate

Removes 99.9% of particles greater than 0.1 micron

Ionizer

Yes

Noise level

Lowest Speed - 24 dB | Highest Speed - 50 dB

Ozone

Less than 0.001 PPM with optional ionizer engaged, 0 PPM when disengaged

Power consumption

1.6 to 64 watts

Power supply

24V, External Power Supply

Sensor

Automatic speed adjustment and coordinated to 5 color rings/ 4 speeds

Sound type

Pink Noise | All speeds

Speed settings

4

Warranty

Forever Guarantee | with Product Registration & Active Air Filter Subscription

Weight

14 lbs (6.4kg)

  • BreatheSmart 45i air purifier 
  • 45i HEPA air filter
  • Designer panel (optional)
  • Quick start guide
  • User manual
  • Power adapter

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.

What is the Alen filter capturing?

Essential (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).

Everything that Pure captures, plus:

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

Perfect for:

  • Pet Owners
  • Allergy Relief
  • Capturing Mold Spores
  • Airborne Particles
Still unsure? Take our quiz

Advanced (Fresh)

HEPA

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 Cooking Odor
  • VOC VOC
  • Pet Odor Pet Odor
  • Diaper Odor Diaper Odor
  • Garbage Odor Garbage Odor
  • Cigar Smoke Cigar Smoke

Perfect for:

  • Airborne Particles
Still unsure? Take our quiz

Ultimate (Odor)

HEPA

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 Cooking Odor
  • Diaper Odor Diaper Odor
  • Pet Odor Pet Odor
  • Garbage Odor Garbage Odor

Perfect for:

  • Airborne Particles
Still unsure? Take our quiz

PERFECT FOR MEDIUM ROOMS UP TO 1,400 SQ FT

 Coverage

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

BreatheSmart 45i Coverage

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

BreatheSmart 75i Coverage

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

BreatheSmart 35i Coverage

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 models

Not sure which model is right for you?Take the quiz
BreatheSmart 75i

BreatheSmart 75i

Ideal for large living rooms and open-concept spaces
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
BreatheSmart 45i

BreatheSmart 45i

Standard living rooms and large master bedrooms
Coverage
950 to 1,900 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

Children’s bedrooms, home offices, FLEXible spaces
Coverage
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
BreatheSmart 35i

BreatheSmart 35i

Big power for small spaces, at the best value.
Coverage
700 to 1,400 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 35i air purifier
  • 35i HEPA air filter
  • Quick start guide
T500 T500

T500

Compact, Powerful Air Cleaning for Any Room
Coverage
500 sq ft
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

Smart Connect Alen App

Detailed Control: Adjust settings across multiple devices and create schedules that match your routine.

Over-the-Air (OTA) firmware updates: As Alen launches ongoing enhancements, you will be able to update your purifier via the Alen Air app.

FAQs

What makes the BreatheSmart 45i different from other air purifiers?

The Alen BreatheSmart 45i combines advanced HEPA filtration technology with optimized airflow for maximum efficiency and minimal noise. This allows for whisper-quiet removal of particulate matter, even on the highest setting, 24/7.

What is included with the BreatheSmart 45i purchase?

The BreatheSmart 45i package includes the air purifier unit, a pre-installed filter, and a user manual. Additional filters can be purchased separately.

Does the BreatheSmart 45i come with a warranty?

Yes, the 45i comes with Alen's Forever Guarantee. This lifetime warranty covers any manufacturing defects when you maintain an active filter subscription service. If your purifier ever has issues, Alen will fix or replace it for free.

How can I trust the Alen brand?

We are committed to transparency and customer satisfaction. You can find over 5,000 reviews on our website and third-party platforms that attest to the quality and reliability of our products.

How does the 45i compare to other brands?

The BreatheSmart 45i offers superior performance with advanced HEPA filtration, quieter operation, and the Forever Guarantee, which many competitors do not offer.

How large of an area can the BreatheSmart 45i cover?

The BreatheSmart 45i is designed to purify spaces up to 1,600 sq ft, making it ideal for living rooms, open-concept spaces, and medium rooms.

How does the BreatheSmart 45i improve sleep quality?

The 45i is engineered to emit a soothing pink noise, which promotes better sleep by masking disruptive sounds. It has been shown to improve sleep quality in a peer-reviewed study by SleepScore Labs.

What types of filters are available for the 45i?

The BreatheSmart 45i has four filter options: Pure (for allergens), Fresh (for chemical odors), Odor (for smoke and pet odors), and VOC/Smoke (for tough odors). All filters are interchangeable, so you can switch based on your needs.

What are the noise levels of the BreatheSmart 45i?

The 45i operates at whisper-quiet levels, even on the highest fan setting. The pink noise it generates is calming and helps create a peaceful environment.

Can I control the 45i remotely?

Yes, the 45i can be controlled remotely using the Alen Air app. You can monitor air quality and adjust settings from anywhere.

What’s included with my purchase of the BreatheSmart 45i?

The 45i comes with the air purifier unit, one pre-installed filter, and a user manual. Additional filters can be purchased separately. The app is available for Apple iPhones and Android.

How energy-efficient is the BreatheSmart 45i?

The 45i is designed to be energy efficient, consuming minimal electricity while maintaining high purification performance.

Can I leave the 45i running all the time?

Yes, the BreatheSmart 45i is designed for continuous operation. Running it 24/7 ensures optimal air quality in your space.

Does the 45i help with wildfire smoke?

Absolutely. The 45i with a VOC/Smoke filter captures fine smoke particles, making it ideal for areas affected by wildfires.

What is the power consumption of the BreatheSmart 45i?

The 45i consumes 50 watts on the highest setting, which is energy efficient given its high air purification power. It’s designed for continuous operation.

Does the BreatheSmart 45i help reduce odors and smoke?

Yes, with the Odor and VOC/Smoke filters, the 45i effectively removes odors from cooking, pets, and smoke. These filters neutralize airborne particles that cause unpleasant smells.

How does the BreatheSmart 45i help with allergies?

The 45i's HEPA filtration captures 99.99% of airborne particles down to 0.1 microns, effectively removing allergens like dust, pollen, and pet dander.

How often should I replace the filter?

Alen recommends replacing filters every 9-12 months, depending on usage and environmental factors. The Alen Air app can remind you when it’s time for a change.

Is the 45i safe for use around pets and children?

Yes, the 45i is safe for use around pets and children. Its design includes safety features like a child lock, and its quiet operation ensures it won't disturb your pets or sleeping children.

What does the red light around the power button mean?

The red light indicates poor air quality, as detected by the 45i's air quality sensor. It automatically adjusts fan speed to clean the air faster.