Levoit Core 600S
#8 in Large roomsFull review
For big living rooms and open-plan spaces where a mid-size unit can’t keep up. Smaller rooms are better served by the Core 400S.
Amazon $259.97$259.97
The Levoit Core 600S is the better air purifier overall, rated 3.6 to 3.3. The Levoit Core 600S leads on value. The Alen BreatheSmart 75i wins on quiet and efficiency. The Levoit Core 600S costs $439.62 less ($259.97 vs $699.59).
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
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 Levoit Core 600S for value ($0.66 per cfm of smoke CADR vs $1.89 per cfm of smoke CADR).
- Choose the Alen BreatheSmart 75i for quiet (51 dB at top speed (maker rating) vs 55 dB at top speed (maker rating)) and efficiency (6.9 cfm per watt vs 6 cfm per watt).
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 | Levoit Core 600S | Alen BreatheSmart 75i |
|---|---|---|
| Overall rating | 3.6/5 | 3.3/5 |
| Value 25% | 82 $0.66 per cfm of smoke CADR | 0 $1.89 per cfm of smoke CADR |
| Filter cost 20% | 70 $119.98 a year in filters | 76 $99 a year in filters |
| Quiet 20% | 33 55 dB at top speed (maker rating) | 60 51 dB at top speed (maker rating) |
| Efficiency 15% | 50 6 cfm per watt | 61 6.9 cfm per watt |
| Auto mode 10% | 100 PM2.5 laser sensor and Wi-Fi app | 100 particle sensor and Wi-Fi app |
| Warranty 10% | 25 2-year warranty | 50 warranty not published (neutral score used) |
Specifications
| Levoit Core 600S | Alen BreatheSmart 75i | |
|---|---|---|
| Performance | ||
| Smoke CADR | 391 cfm | 370 cfm |
| Dust CADR | 398 cfm | 351 cfm |
| Pollen CADR | 436 cfm | 431 cfm |
| PM2.5 CADR | 394 cfm | 360 cfm |
| CADR certified by | AHAM Verifide | ENERGY STAR |
| Room size (AHAM) | 606 sq ft | 574 sq ft |
| Coverage (maker) | 2,933 sq ft | 2,800 sq ft |
| Noise | 26 to 55 dB | 25 to 51 dB |
| Efficiency | ||
| Efficiency (IEF) | 6 cfm/W | 6.9 cfm/W |
| ENERGY STAR | Yes | Yes |
| Energy use | 378 kWh/year | 304 kWh/year |
| Power at top speed | 66 W | 55 W |
| Filters | ||
| Filter | HEPA | HEPA (Essential/Pure filter as sold in this listing) |
| Activated carbon | Yes | No |
| Replacement | Core 600S-P Original Replacement Filter | Essential (Pure), formerly B7 |
| Replacement cost | $59.99 every 6 months | $99 every 12 months |
| Yearly filter cost | $119.98/year | $99/year |
| Ionizer | No | Yes, can be switched off |
| CARB certified (ozone) | Yes | Yes |
| Controls and build | ||
| Air-quality sensor | PM2.5 laser | particle |
| Auto mode | Yes | Yes |
| Wi-Fi app | Yes | Yes |
| Fan speeds | 4 | 5 |
| Dimensions | 23.6 x 12.3 x 12.3 in | 27 x 18.5 x 11.5 in |
| Weight | 13.7 lb | 27 lb |
| Warranty | 2 years | - |