Alen BreatheSmart 45i
$$ Mid-range$449.00
tldr; Community favorite for effective odor control.
$449.00 on AmazonSentiment Breakdown
50%Positive
Positive
50%Neutral
45%Negative
5%Based on 115 Reddit opinions
Strengths & Weaknesses
Each axis shows what % of Reddit comments are positive about that topic. Higher = more praise.
Key Features
- HEPA Pure Filter: Eliminates 99.9% of pollutants as small as 0.1 micron so you can breathe easy. Perfect for bedrooms, living rooms and home offices
- Sleep Enhancing: The BreatheSmart 45i 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
- Efficient Coverage: The BreatheSmart 45i quietly and efficiently circulates air up to 1900 sq. ft. every hour. Perfect for large bedrooms, living rooms, and dining rooms ensuring clean, fresh air throughout your space
- Engineered to Perform: Alen air purifiers offer superior performance through the combination of a powerful fan, quiet motor, and advanced filtration. Medical-grade filters capture particles as small as 0.1 micron
- Intelligent Design: SmartSensor technology adjusts fan speed based on air quality, with color-coded feedback. Monitor air purity easily with this home essential
- đź’¨ Effective at eliminating odors
- 🛏 Great for bedrooms
- đź’¸ Filter replacement costs to consider
Sentiment Over Time
Historical Price Data
Alen BreatheSmart 45i
Alen BreatheSmart 45i
All-time low: $314.3(2025-11)
What Redditors Actually Say
What Redditors Say
Best praise vs top criticism for Alen BreatheSmart 45i
Best Praise
+3 pts“Alen 45i or 75i with their massive VOC/smoke carbon filter. It has pounds of carbon in it to deal with that kind of smoke. Also: move.”
r/AirPurifiers
ViewTop Criticism
+5 pts“i would recommend staying away from alen air, its just a cheap knockoff”
r/AirQuality
View13 more quotes available below
Related Products
Frequently Asked Questions
Is the Alen BreatheSmart 45i worth buying?
Community favorite for effective odor control.
What do Redditors love about the Alen BreatheSmart 45i?
Redditors highlight: 💨 Effective at eliminating odors. 🛏 Great for bedrooms. 💸 Filter replacement costs to consider.
What are the downsides of the Alen BreatheSmart 45i?
Some criticisms include: "i would recommend staying away from alen air, its just a cheap knockoff"
How accurate are these ratings?
Our sentiment analysis is approximately 80-85% accurate compared to manual review. Products with more mentions (Alen BreatheSmart 45i has 115) tend to have more reliable scores.
115 Reddit opinions analyzed • Last updated 4/16/2026