CADR = 192, noise = 39.2 dB
theorist9 in r/HouseFresh
Source14 Reddit comments and posts discuss both products: 2 lean toward Alen BreatheSmart 45i, 7 toward Alen 75i, and 5 don't pick a side.
Green marks the row winner: the strongest supported feature sentiment with at least 3 mentions, or the lowest listed price. Everything else stays neutral.
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| Feature | Alen BreatheSmart 45i | Alen 75i |
|---|---|---|
| Price | ||
| purification performance | | |
| noise level | | |
| warranty | | |
| coverage | | |
| filter quality | | |
| build quality | | |
| value | | |
| odor control | | |
| filter longevity | | |
| filter cost | | |
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We may earn a small commission.
14 Reddit comments and posts discuss both products: 2 lean toward Alen BreatheSmart 45i, 7 toward Alen 75i, and 5 don't pick a side. Overall, Reddit leans toward Alen 75i.
Across all discussions RedDB tracks, Alen BreatheSmart 45i has 90% positive sentiment over 63 Reddit mentions, while Alen 75i has 86% positive sentiment over 106 mentions.