Alen 45i HEPA Air Purifier, Essential Filter, Covers 1,900 Sq Ft

Highlights

• MEDICAL-GRADE HEPA FOR LARGE ROOMS: The Alen BreatheSmart 45i air purifier for home captures 99.9% of airborne particles as small as 0.1 micron - going beyond the standard 0.3-micron HEPA threshold - eliminating dust, allergens, viruses with every pass. With coverage up to 1,900 sq ft across four fan speeds, it delivers powerful, consistent clean air for large bedrooms, living rooms, family rooms, and open-concept spaces throughout your home
• ESSENTIAL FILTER - PURE HEPA PROTECTION: The Essential filter is the foundation of the 45i lineup, delivering medical-grade HEPA filtration for everyday allergy and dust relief. It targets airborne dust, viruses & allergies - making it the right choice for any home where clean air is a daily priority. With a 9-12 month filter life, it's the most cost-efficient option in the lineup, built for consistent year-round use
• SMART AUTO MODE & AIR QUALITY MONITOR: The 45i uses built-in optical sensors to continuously detect airborne particles in real time, then automatically adjusts fan speed to match your indoor air quality. A color-changing ring displays your air quality level at a glance, while the Alen Air app lets you monitor and control your home air purifier remotely, set schedules, and track air quality from anywhere
• WHISPER-QUIET BEDROOM AIR PURIFIER: Running as low as 24 dB and ranking among the quietest 20% of air purifiers for home on the market, the 45i is engineered for peaceful, uninterrupted sleep. Every fan speed - from low to high - produces soothing pink noise backed by a peer-reviewed SleepScore Labs study, helping you fall asleep faster and wake up refreshed. Ideal for bedrooms, nurseries, home offices, and any space where silence matters
• LIFETIME WARRANTY & SCENTRA AROMATHERAPY: Alen stands behind the BreatheSmart 45i with a lifetime warranty - if your purifier ever has issues, Alen will fix or replace it at no cost, must have an active filter subscription and product registration. Alen also makes Scentra, a mood-boosting aromatherapy line designed to pair intentional scents with your purified air for a more intentional home