The Alen BreatheSmart 45i is ideal for bedrooms and other rooms up to 800 sq. ft. Proven to improve sleep by and independent SleepScore Labs study, the BreatheSmart 45i emits a soothing pink noise that boosts frequencies in the lower octaves, so you wake up feeling rested. Alen air purifiers offer superior performance through the combination of a powerful fan, quiet motor, and advanced filtration technology to deliver and maximize airflow while minimizing noise. Our medical-grade filters capture particles as small as 0.1 micron, removing even the tiniest pollutants including dust, pollen, pet dander, mold spores, germs and bacteria, and more. Laser sensor technology detects when particles are present and auto-adjusts fan speed, so you don’t have to. The 5 color coded rings show your indoor air quality at a glance and let you see how Alen is working to clean the air quickly and efficiently. Get real time air quality insights, view historical trends, or control your purifier remotely using the Alen Air app. Alen air purifiers are backed by the industry’s only Forever Guarantee.
A: The BreatheSmart 45i uses a True HEPA filter, which is 99.9% efficient at capturing particles down to 0.1 microns in size. This includes dust, allergens, pollen, pet dander, mold spores, germs, and bacteria.
A: The BreatheSmart 45i improves sleep quality by emitting a soothing pink noise that boosts frequencies in the lower octaves. This is supported by a peer-reviewed study conducted by SleepScore Labs, which found that the BreatheSmart 45i significantly improved sleep quality in participants.
A: Yes, the BreatheSmart 45i air purifier has a Fresh Filter that uses activated carbon to mitigate common household odors and absorb light chemicals and VOCs. This filter is particularly effective in removing light household odors, cooking smells, and chemicals.
A: The BreatheSmart 45i measures 15 inches in width, 25 inches in height, and 8.5 inches in depth. It weighs 15 pounds. Compared to other air purifiers, it is considered to be relatively compact and lightweight, making it suitable for use in various room sizes.
A: The noise level of the BreatheSmart 45i on its highest setting is equivalent to the sound of gentle rainfall. Compared to other air purifiers, it operates quietly, allowing for a peaceful environment.
Q: How much energy does the BreatheSmart 45i consume, and how much does it cost to operate per day?
A: The BreatheSmart 45i consumes 50 Watts of energy on its highest setting. Operating the air purifier 24 hours a day at this setting would cost approximately $0.12 per day based on average U.S. electricity rates.
A: Alen offers a one-year factory warranty and a lifetime warranty for its BreatheSmart 45i air purifier. The lifetime warranty is transferable and requires product registration and enrollment in a filter subscription program within 12 months of purchase. Compared to other air purifier brands, Alen's warranty stands out for its lifetime coverage and transferability, providing long-term protection and peace of mind to consumers.
A: Yes, you can control the BreatheSmart 45i remotely using the Alen Air app. The app allows you to view real-time air quality, see historical trends, control your purifiers remotely, set air quality notifications, and get reminders when it's time to replace your filter.

The Alen BreatheSmart 45i is ideal for bedrooms and other rooms up to 800 sq. ft. Proven to improve sleep by and independent SleepScore Labs study, the BreatheSmart 45i emits a soothing pink noise that boosts frequencies in the lower octaves, so you wake up feeling rested. Alen air purifiers offer superior performance through the combination of a powerful fan, quiet motor, and advanced filtration technology to deliver and maximize airflow while minimizing noise. Our medical-grade filters capture particles as small as 0.1 micron, removing even the tiniest pollutants including dust, pollen, pet dander, mold spores, germs and bacteria, and more. Laser sensor technology detects when particles are present and auto-adjusts fan speed, so you don’t have to. The 5 color coded rings show your indoor air quality at a glance and let you see how Alen is working to clean the air quickly and efficiently. Get real time air quality insights, view historical trends, or control your purifier remotely using the Alen Air app. Alen air purifiers are backed by the industry’s only Forever Guarantee.

Dyson HushJet compact purifier is Dyson's most powerful, small-format purifier. Basing their design on that of jet engines, Dyson engineers developed HushJet air projection, which minimizes noise while purifying rooms of up to 203 sq ft. So, it’s compact in size yet powerfully circulates air throughout the entire room. Whether you’re working, relaxing or sleeping, the Dyson HushJet Purifier Compact is designed to perform in the background, quietly protecting your home from indoor pollutants that can build up quickly in enclosed, well-sealed places. Recommended for rooms upto 203 Sq Ft.

Say Hello To Mila: Finally, a smart air purifier designed with real, air-breathing humans in mind. Mila is the first air purifier to offer a guaranteed level of clean-with proof you can see. You'll always know exactly what your home air quality is and how long it'll take to achieve your target air quality index (AQI), regardless of room size. Unlike generic air purifier filters that try to do a little bit of everything (and do nothing well), Mila offers 7 unique filters to address the specific needs of air breathers. With 1.25 lbs. of Carbon, the Overreactor filter included with this Mila Air Purifier is specifically designed for heavy duty Odors, VOC's and harmful particles such as dander, dust, mold, pollen, smoke, bacteria, virus and more. Suitable for a 595 sq. ft. room providing 2 air changes per hour. Mila complies with California air resources board (CARB) for indoor cleaning devices and is FCC certified and ETL listed and ENERGY STAR certified.
| Pros for Alen - BreatheSmart 45i 800 SqFt Air Purifier with Fresh HEPA Filter for Allergens, Dust, Odors & Smoke - White | |||
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| There were no pros for this product— | Noise Level, Ease of Use, Overall Performance, Air Purification Performance | There were no pros for this product— | There were no pros for this product— |