Price: $325.99 - $179.00
(as of Feb 13, 2026 18:45:13 UTC – Details)

The Alen BreatheSmart 25i is ideal for bedrooms and other rooms up to 1000 sq. ft. Proven to improve sleep by an independent SleepScore Labs study, the BreatheSmart 25i 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 H13 filters capture particles as small as 0.1 micron, removing even the tiniest pollutants including dust, pollen, pet dander, 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.
BUILT FOR EXCELLENCE: 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 H13 filters capture particles as small as 0.1 micron, removing even the tiniest pollutants including dust and pet odor. Alen air purifiers are energy efficient and designed to run 24/7, generating a total energy cost of only $0.12 per day
INCLUDES H13 HEPA ESSENTIAL FILTER: Eliminates 99.9% of particles as small as 0.1 micron so you can breathe easy. Perfect for bedrooms, living rooms and home offices
POWERFUL ROOM COVERAGE: Ideal for up to 400 sq. ft., the BreatheSmart 25i quietly and efficiently circulates air every hour, making it an impressive room air purifier. Our filters will last you for up to a year while operating 24/7
SMART AIR PURIFICATION: Elevate your home with Alen BreatheSmart 25i. Our SmartSensor adjusts fan speed based on air quality, with color-coded feedback. Blue rings indicate excellent air quality levels while purple rings indicate high particle presence.
DESIGNED FOR BETTER SLEEP: The BreatheSmart 25i, a HEPA air purifier, is proven by SleepScore Labs to enhance sleep according to a peer study. Its ultra-quiet operation emits pink noise, optimizing lower octave frequencies, and ensuring a restful night. An excellent addition to air purifiers for bedroom for undisturbed, quality sleep, so you wake up feeling rested