Why it matters
The VEWIOR KJ300 Air Purifier is a large-room / whole-floor air purifier that its maker rates for 3000 square feet.
At the usual 4.8 air changes an hour and an 8-foot ceiling, a 3,000-square-foot rating implies about 1,920 cubic feet of clean air a minute. In a 12-by-15-foot bedroom that would turn the air over roughly 80 times an hour.
Filtration: HEPA. Quietest setting, per the listing: 15 db.
Price-wise it sat in the cheapest third of the 57 large-room / whole-floor models we cover when we checked; the button shows today's price.
It qualifies for our lists Best Air Purifiers for Large Living Rooms, Best Air Purifiers for Home Offices, where it is ranked against every model that meets the same rule.
Its rated room size of 3,000 square feet is one of the largest ratings we cover: 145 of the 152 purifiers with a stated figure come in lower, and the range runs from 62 square feet to 4,800 square feet.
Compared with the VEWIOR ClearAir-A3 Air Purifier: rated room size 3000 square feet here vs 2200 square feet.
Who it's for, and who should skip it
Good fit if
- Rooms up to about 3000 square feet
- Large open rooms
Look elsewhere if
- Whole-home filtration on its own
- Removing gases without a substantial carbon stage
Pros and cons
Pros
- Rated for 3000 square feet
- Low setting 15 db
Cons
- Filters are an ongoing cost
- Size to the room at 4.8 air changes per hour
Limitations to weigh
- Specifications are the maker's or seller's own figures; check fit against your equipment's model number and the actual size.
Specifications
The bracket shows where each figure comes from.
| Model number | KJ300 | Retailer |
|---|---|---|
| Room coverage | 3000 square feet | Retailer |
| Noise (seller) | 15 db | Retailer |
| Filter type | HEPA | Retailer |
Alternatives worth comparing
More air purifiers we cover
- Honeywell HPA300 HEPA Air Purifier
- Coway Airmega Halo $229.99
- GermGuardian AC4880W Air Purifier
- Medify Air MA-40 Air Purifier $249.99
- Airpura R414 Air Purifier
All air purifiers, compared in one table · Every VEWIOR product we cover
Final verdict
A solid choice for rooms up to about 3000 square feet. Confirm the model it fits before ordering.
Where to buy
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