Jafanda JF280
#4 in Small roomsFull review
Strong value for a bedroom up to about 210 sq ft, with a PM2.5 sensor and auto mode at $60.
Amazon $59.99$59.99
The Jafanda JF280 is the better air purifier overall, rated 3.4 to 3.1. The Jafanda JF280 leads on value and filter cost. The Jafanda JF280 costs $30 less ($59.99 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 Jafanda JF280 for value ($0.44 per cfm of smoke CADR vs $0.76 per cfm of smoke CADR) and filter cost ($89.97 a year in filters vs $119.96 a year in filters).
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 | Jafanda JF280 | KNKA APH2500P |
|---|---|---|
| Overall rating | 3.4/5 | 3.1/5 |
| Value 25% | 100 $0.44 per cfm of smoke CADR | 83 $0.76 per cfm of smoke CADR |
| Filter cost 20% | 19 $89.97 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% | 40 5.2 cfm per watt | 40 5.2 cfm per watt |
| Auto mode 10% | 70 PM2.5 sensor, auto mode | 70 air quality (type not stated) sensor, auto mode |
| Warranty 10% | 25 2-year warranty | 25 2-year warranty |
Specifications
| Jafanda JF280 | KNKA APH2500P | |
|---|---|---|
| Performance | ||
| Smoke CADR | 135 cfm | 119 cfm |
| Dust CADR | 143 cfm | 123 cfm |
| Pollen CADR | 164 cfm | 147 cfm |
| PM2.5 CADR | 139 cfm | 121 cfm |
| CADR certified by | AHAM Verifide | AHAM Verifide |
| Room size (AHAM) | 209 sq ft | 184 sq ft |
| Noise | 20 dB | - |
| Efficiency | ||
| Efficiency (IEF) | 5.2 cfm/W | 5.2 cfm/W |
| ENERGY STAR | No | No |
| Energy use | 168 kWh/year | 137 kWh/year |
| Filters | ||
| Filter | HEPA-type | HEPA-type |
| Activated carbon | Yes | Yes |
| Replacement | Filter-JA280 | APH2500P filter |
| Replacement cost | $29.99 every 4 months | $29.99 every 3 months |
| Yearly filter cost | $89.97/year | $119.96/year |
| CARB certified (ozone) | Yes | Yes |
| Controls and build | ||
| Air-quality sensor | PM2.5 | air quality (type not stated) |
| Auto mode | Yes | Yes |
| Wi-Fi app | No | No |
| Fan speeds | 3 | - |
| Dimensions | 13.0 x 6.5 x 10.1 in | - |
| Weight | 6.4 lb | - |
| Warranty | 2 years | 2 years |
| Released | - | 2026-09 |