The Alen BreatheSmart 35i delivers powerful air purification for small to medium spaces, combining advanced features with a compact, affordable design. Here’s why it stands out: Advanced Filtration: Choose between Pure, Fresh and Odor filters with True HEPA efficiency to capture 99.9% of particles as small as 0.1 microns, perfect for tackling dust, allergens, and other pollutants.Optimized for Medium Spaces: Designed to purify rooms up to 1,000 sq ft once per hour, or 500 sq. ft. every 30 minutes, making it ideal for apartments, bedrooms, and home offices.Ultra-Quiet Performance: With a sound range of only 29-42 dB, the 35i is Alen’s quietest purifier, ensuring non-disruptive, whisper-quiet operation even at the highest speed.Smart Sensor Technology: Equipped to monitor PM2.5, VOCs, CO2, temperature, and humidity, and with air quality alerts through the Alen Air app, you’re always in control of your indoor air.App Control: The Alen Air app offers remote control, scheduling, and filter status updates, while Auto Light Mode dims panel lights in low-light environments.Built to Last: Backed by Alen’s Forever Guarantee with regular filter replacement, this purifier offers reliable performance and lifetime peace of mind.