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
The KNKA APH2500P and the Levoit Core 300 are evenly matched, rated 3.1 and 3.1. The KNKA APH2500P leads on auto mode and efficiency. The Levoit Core 300 wins on filter cost and value.
Levoit Core 300
#9 in Small roomsFull review
A simple, proven purifier for a bedroom or small living room. Buy the Core 300S only if you want auto mode and app control.
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 KNKA APH2500P for auto mode (air quality (type not stated) sensor, auto mode vs no air-quality sensor or app) and efficiency (5.2 cfm per watt vs 2.7 cfm per watt).
- Choose the Levoit Core 300 for filter cost ($59.98 a year in filters vs $119.96 a year in filters) and value ($0.63 per cfm of smoke CADR vs $0.76 per cfm of smoke CADR).
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 | KNKA APH2500P | Levoit Core 300 |
|---|---|---|
| Overall rating | 3.1/5 | 3.1/5 |
| Value 25% | 83 $0.76 per cfm of smoke CADR | 91 $0.63 per cfm of smoke CADR |
| Filter cost 20% | 0 $119.96 a year in filters | 54 $59.98 a year in filters |
| Quiet 20% | 50 noise at top speed not published (neutral score used) | 37 54.5 dB at top speed (maker rating) |
| Efficiency 15% | 40 5.2 cfm per watt | 9 2.7 cfm per watt |
| Auto mode 10% | 70 air quality (type not stated) sensor, auto mode | 0 no air-quality sensor or app |
| Warranty 10% | 25 2-year warranty | 25 2-year warranty |
Specifications
| KNKA APH2500P | Levoit Core 300 | |
|---|---|---|
| Performance | ||
| Smoke CADR | 119 cfm | 143 cfm |
| Dust CADR | 123 cfm | 153 cfm |
| Pollen CADR | 147 cfm | 167 cfm |
| PM2.5 CADR | 121 cfm | 148 cfm |
| CADR certified by | AHAM Verifide | AHAM Verifide |
| Room size (AHAM) | 184 sq ft | 222 sq ft |
| Noise | - | 24 to 54.5 dB |
| Efficiency | ||
| Efficiency (IEF) | 5.2 cfm/W | 2.7 cfm/W |
| ENERGY STAR | No | No |
| Energy use | 137 kWh/year | 317 kWh/year |
| Power at top speed | - | 56 W |
| Filters | ||
| Filter | HEPA-type | HEPA |
| Activated carbon | Yes | Yes |
| Replacement | APH2500P filter | Core 300 Series Original Filter |
| Replacement cost | $29.99 every 3 months | $29.99 every 6 months |
| Yearly filter cost | $119.96/year | $59.98/year |
| Ionizer | - | No |
| CARB certified (ozone) | Yes | Yes |
| Controls and build | ||
| Air-quality sensor | air quality (type not stated) | None |
| Auto mode | Yes | No |
| Wi-Fi app | No | No |
| Fan speeds | - | 3 |
| Dimensions | - | 14.2 x 8.7 x 8.7 in |
| Weight | - | 7.9 lb |
| Warranty | 2 years | 2 years |
| Released | 2026-09 | - |