Levoit Core 200S
#7 in Small roomsFull review
A cheap smart purifier for a small bedroom or office. Choose something bigger for a living room.
Amazon $69.98$69.98
The Levoit Core 200S and the KNKA APH2500P are evenly matched, rated 3.1 and 3.1. The Levoit Core 200S leads on filter cost. The KNKA APH2500P wins on efficiency and auto mode. The Levoit Core 200S costs $20.01 less ($69.98 vs $89.99).
KNKA APH2500P
#8 in Small roomsFull review
A pet-oriented purifier for bedrooms up to about 185 sq ft. Its hair-catching pre-filter is the draw, but plain purifiers deliver more clean air per dollar.
Amazon $89.99$89.99
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 Levoit Core 200S for filter cost ($39.14 a year in filters vs $119.96 a year in filters).
- Choose the KNKA APH2500P for efficiency (5.2 cfm per watt vs 2.2 cfm per watt) and auto mode (air quality (type not stated) sensor, auto mode vs Wi-Fi app, no air-quality sensor).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every small rooms air purifier; a clear win is highlighted. How we rank explains each one.
| Factor weight | Levoit Core 200S | KNKA APH2500P |
|---|---|---|
| Overall rating | 3.1/5 | 3.1/5 |
| Value 25% | 81 $0.78 per cfm of smoke CADR | 83 $0.76 per cfm of smoke CADR |
| Filter cost 20% | 52 $39.14 a year in filters | 0 $119.96 a year in filters |
| Quiet 20% | 50 noise at top speed not published (neutral score used) | 50 noise at top speed not published (neutral score used) |
| Efficiency 15% | 3 2.2 cfm per watt | 40 5.2 cfm per watt |
| Auto mode 10% | 30 Wi-Fi app, no air-quality sensor | 70 air quality (type not stated) sensor, auto mode |
| Warranty 10% | 25 2-year warranty | 25 2-year warranty |
Specifications
| Levoit Core 200S | KNKA APH2500P | |
|---|---|---|
| Performance | ||
| Smoke CADR | 90 cfm | 119 cfm |
| Dust CADR | 101 cfm | 123 cfm |
| Pollen CADR | 119 cfm | 147 cfm |
| PM2.5 CADR | 95 cfm | 121 cfm |
| CADR certified by | AHAM Verifide | AHAM Verifide |
| Room size (AHAM) | 140 sq ft | 184 sq ft |
| Noise | 27 dB | - |
| Efficiency | ||
| Efficiency (IEF) | 2.2 cfm/W | 5.2 cfm/W |
| ENERGY STAR | No | No |
| Energy use | 252 kWh/year | 137 kWh/year |
| Power at top speed | 45 W | - |
| Filters | ||
| Filter | HEPA | HEPA-type |
| Activated carbon | Yes | Yes |
| Replacement | Core 200S-P 3-stage replacement filter | APH2500P filter |
| Replacement cost | $19.57 every 6 months | $29.99 every 3 months |
| Yearly filter cost | $39.14/year | $119.96/year |
| Ionizer | No | - |
| CARB certified (ozone) | Yes | Yes |
| Controls and build | ||
| Air-quality sensor | None | air quality (type not stated) |
| Auto mode | No | Yes |
| Wi-Fi app | Yes | No |
| Fan speeds | 3 | - |
| Dimensions | 12.6 x 8.1 x 8.1 in | - |
| Weight | 6.6 lb | - |
| Warranty | 2 years | 2 years |
| Released | - | 2026-09 |