Alen BreatheSmart 75i
#12 in Large roomsFull review
A premium large-room purifier with long-lasting filters, for buyers willing to pay for quiet and a subscription-backed guarantee.
Amazon $699.59$699.59
The Alen BreatheSmart 75i is the better air purifier overall, rated 3.3 to 3.0. The Alen BreatheSmart 75i leads on quiet and efficiency. The Levoit EverestAir wins on value. The Levoit EverestAir costs $199.60 less ($499.99 vs $699.59).
Levoit EverestAir
#13 in Large roomsFull review
A premium Levoit for a large room where floor space is tight. The Core 600S cleans a bit more air for less money if you have the floor space.
Amazon $499.99$499.99
Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Alen BreatheSmart 75i for quiet (51 dB at top speed (maker rating) vs 56 dB at top speed (maker rating)) and efficiency (6.9 cfm per watt vs 5.3 cfm per watt).
- Choose the Levoit EverestAir for value ($1.41 per cfm of smoke CADR vs $1.89 per cfm of smoke CADR).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every large rooms air purifier; a clear win is highlighted. How we rank explains each one.
| Factor weight | Alen BreatheSmart 75i | Levoit EverestAir |
|---|---|---|
| Overall rating | 3.3/5 | 3.0/5 |
| Value 25% | 0 $1.89 per cfm of smoke CADR | 17 $1.41 per cfm of smoke CADR |
| Filter cost 20% | 76 $99 a year in filters | 74 $99.99 a year in filters |
| Quiet 20% | 60 51 dB at top speed (maker rating) | 27 56 dB at top speed (maker rating) |
| Efficiency 15% | 61 6.9 cfm per watt | 41 5.3 cfm per watt |
| Auto mode 10% | 100 particle sensor and Wi-Fi app | 100 PM1/PM2.5/PM10 laser sensor and Wi-Fi app |
| Warranty 10% | 50 warranty not published (neutral score used) | 25 2-year warranty |
Specifications
| Alen BreatheSmart 75i | Levoit EverestAir | |
|---|---|---|
| Performance | ||
| Smoke CADR | 370 cfm | 354 cfm |
| Dust CADR | 351 cfm | 373 cfm |
| Pollen CADR | 431 cfm | 431 cfm |
| PM2.5 CADR | 360 cfm | 363 cfm |
| CADR certified by | ENERGY STAR | AHAM Verifide |
| Room size (AHAM) | 574 sq ft | 549 sq ft |
| Coverage (maker) | 2,800 sq ft | - |
| Noise | 25 to 51 dB | 24 to 56 dB |
| Efficiency | ||
| Efficiency (IEF) | 6.9 cfm/W | 5.3 cfm/W |
| ENERGY STAR | Yes | No |
| Energy use | 304 kWh/year | 404 kWh/year |
| Power at top speed | 55 W | 70 W |
| Filters | ||
| Filter | HEPA (Essential/Pure filter as sold in this listing) | HEPA |
| Activated carbon | No | Yes |
| Replacement | Essential (Pure), formerly B7 | EverestAir-P replacement filter |
| Replacement cost | $99 every 12 months | $99.99 every 12 months |
| Yearly filter cost | $99/year | $99.99/year |
| Ionizer | Yes, can be switched off | No |
| CARB certified (ozone) | Yes | Yes |
| Controls and build | ||
| Air-quality sensor | particle | PM1/PM2.5/PM10 laser |
| Auto mode | Yes | Yes |
| Wi-Fi app | Yes | Yes |
| Fan speeds | 5 | 3 |
| Dimensions | 27 x 18.5 x 11.5 in | 23.2 x 18.9 x 8.5 in |
| Weight | 27 lb | 20.7 lb |
| Warranty | - | 2 years |