Alen Air BreatheSmart 75i Review
by Alen Air
$470.01
Estimated Annual Filter Cost: ~$99-$139/year
Summary
The Alen Air BreatheSmart 75i is a high-capacity, large-room purifier that pairs strong particulate CADR (Clean Air Delivery Rate) with a quiet low speed, intuitive controls, and a polished look. It’s excellent for allergies and general city pollution, and—when fitted with the Fresh carbon filter—handles everyday VOCs/odors credibly. If you need true heavy smoke adsorption, its 3.6 lb carbon pack is good but not class-leading by mass; otherwise, it’s a top pick for big rooms where clean air and simple app control matter.
Here's what this purifier does best
- Big-room performance: ~370–375 CADR (Clean Air Delivery Rate) with 5 ACH (Air Changes per Hour) in ~520–560 sq ft; great for open living areas.
- Quiet on low: ~25 dB low speed is bedroom-friendly; “pink noise” tone helps at night.
- Meaningful VOC/odor option: Fresh filter adds ~3.6 lb pelletized carbon for smells and VOCs.
- Simple, useful smart features: App control, AQI (Air Quality Index) ring, and Auto mode make set-and-forget easy.
- CARB ozone-safe: Optional ionizer is switchable and certified below the CARB limit.
Consider these trade-offs
- Carbon mass not “heavy-duty”: 3.6 lb carbon helps, but for persistent wildfire or strong chemical loads, some competitors offer 5–10+ lb canisters; the 75i’s Fresh pack is below that.
- Pricey upfront & filters: ~$799 MSRP; Fresh/Odor filters $129–$139 yearly for typical usage.
- No voice control: App is solid, but no Alexa/Google integration per retailer listings.
- High settings are audible: Expect ~51 dB on Turbo; you’ll hear it during spikes.