A slim smart purifier for a bedroom, especially with pets. It cleans about as much air as the Core 300 but adds auto mode and Wi-Fi.
Amazon $119.99The Levoit Vital 100S rates 3.5 among small rooms air purifiers; the Sharp FP-K50UW Plasmacluster rates 3.2 among medium rooms ones. The Levoit Vital 100S costs $60 less ($119.99 vs $179.99).

A medium-room HEPA and carbon purifier with long-life filters, for buyers who prefer simple manual controls.
Amazon $179.99Prices 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.
Scores side by side
These two sit in different room size classes (small rooms and medium rooms), and each is scored against the reference points for its own class, so a rating says how well each does among its own room size peers. How we rank explains each factor.
| Factor weight | Levoit Vital 100S | Sharp FP-K50UW Plasmacluster |
|---|---|---|
| Overall rating | 3.5/5 | 3.2/5 |
| Value 25% | 77 $0.84 per cfm of smoke CADR | 55 $1.08 per cfm of smoke CADR |
| Filter cost 20% | 62 $52.63 a year in filters | 84 $34.99 a year in filters |
| Quiet 20% | 53 52 dB at top speed (maker rating) | 50 noise at top speed not published (neutral score used) |
| Efficiency 15% | 20 3.6 cfm per watt | 50 efficiency not certified (neutral score used) |
| Auto mode 10% | 100 particle (infrared) sensor and Wi-Fi app | 0 no air-quality sensor or app |
| Warranty 10% | 25 2-year warranty | 0 1-year warranty |
Specifications
| Levoit Vital 100S | Sharp FP-K50UW Plasmacluster | |
|---|---|---|
| Performance | ||
| Smoke CADR | 143 cfm | 167 cfm |
| Dust CADR | 161 cfm | 171 cfm |
| Pollen CADR | 173 cfm | 188 cfm |
| PM2.5 CADR | 152 cfm | - |
| CADR certified by | AHAM Verifide | AHAM Verifide |
| Room size (AHAM) | 222 sq ft | 259 sq ft |
| Coverage (maker) | - | 1,253 sq ft |
| Noise | 23 to 52 dB | 23 dB |
| Efficiency | ||
| Efficiency (IEF) | 3.6 cfm/W | - |
| ENERGY STAR | No | No |
| Energy use | 244 kWh/year | - |
| Power at top speed | 32 W | - |
| Filters | ||
| Filter | HEPA | True HEPA with separate activated carbon filter and washable pre-filter |
| Activated carbon | Yes | Yes |
| Replacement | Vital 100S replacement filter | FZ-K50HFU (HEPA) |
| Replacement cost | $39.47 every 9 months | $69.99 every 24 months |
| Yearly filter cost | $52.63/year | $34.99/year |
| Ionizer | No | Yes |
| CARB certified (ozone) | Yes | Yes |
| Controls and build | ||
| Air-quality sensor | particle (infrared) | None |
| Auto mode | Yes | No |
| Wi-Fi app | Yes | No |
| Fan speeds | 4 | 3 |
| Dimensions | 16.0 x 12.6 x 6.3 in | 21.3 x 15.1 x 8.2 in |
| Weight | 8.6 lb | 11 lb |
| Warranty | 2 years | 1 years |