FUMKL: 1 DOE certified model
FUMKL has one air purifier basic model certified to DOE as of 2026-11-03, rated smoke CADR 369 cfm. It's the same unit as a model filed under 1 other brand. How its efficiency compares with its DOE class is below.
Source: DOE Compliance Certification Database (air purifiers), data as of 2026-11-03.
Air purifiers
| # | Photo | Model | Labels | Smoke CADR, cfm | Room size | PM2.5 CADR | CADR/W | Brands |
|---|---|---|---|---|---|---|---|---|
| 1 | FUMKLAP400 Profiled as KNKA APH4000 Pro |
| 369cfm, 572 sq ft | 572 sq ft | 367 | 5.6 | 2 |
How efficient is the FUMKL AP400 Pro?
FUMKL AP400 Pro files CADR/W 5.6. The median among the 140 models in its DOE class (air purifiers, PM2.5 CADR 150+ cfm) is 5.5, so it's above the median: higher than 72 of the 140.
A higher CADR/W means more clean air per watt.
Who makes FUMKL air purifiers?
DOE's database has no manufacturer field, so the evidence is whose model number each unit is filed under and which other brands file the same unit.
Its one basic model is filed under KNKA's own model number (APH4000 Pro).
FUMKL shares its basic model with one other brand, KNKA.
| Basic model | FUMKL model | Number belongs to | Brands |
|---|---|---|---|
| APH4000 Pro | AP400 Pro | KNKA | 2 |
How much does a FUMKL air purifier cost to run?
For FUMKL AP400 Pro, DOE's record lists 387 kWh a year, the annual energy figure from DOE's test. That's about $70.28 a year.
At 18.16¢ per kWh, the US average residential price for August 2026 (EIA Electric Power Monthly, table 5.6.A). Worked out from the certified figures.
How does FUMKL AP400 Pro compare with other brands?
Picked by rule from models with a matched listing, DOE data as of 2026-11-03.
- Within 20 cfm of its size, highest CADR/W: WOZOYO Pure Air PA6, 363 cfm. Room size 563 sq ft, CADR/W 5.8.
- Nearest size in its class with a higher CADR/W: BOSCH Air 6000, 339 cfm. Room size 525 sq ft, CADR/W 6.9: about 19% less power for the same clean air.
- Nearest bigger unit: JAFANDA JF888, 423 cfm. Room size 656 sq ft, CADR/W 4.8.
Questions about FUMKL
- Is FUMKL a good air purifier brand?
- Its one air purifier basic model, FUMKL AP400 Pro, certifies 369 cfm, and its CADR/W of 5.6 is higher than 72 of the 140 in its DOE class (air purifiers, PM2.5 CADR 150+ cfm). It's filed under another company's model number (see who makes them above). We don't test reliability, noise or build quality, so we can't rank brands on those. How we compare models.
- What room size are FUMKL air purifiers rated for?
- DOE's effective room size for FUMKL AP400 Pro is 572 sq ft, from a certified smoke CADR 369 cfm. CADR and room size.
- Is FUMKL the same as KNKA?
- For one unit, yes: both file it under the same DOE basic model (APH4000 Pro). Compare the 2 brands of APH4000 Pro.