| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| best air purifiers without filters | 0.94 | 0.4 | 1156 | 66 |
| best air purifier without filter replacement | 1.91 | 0.7 | 5670 | 80 |
| best air purifiers with no filters | 1.87 | 0.4 | 1570 | 70 |
| best air purifier without a filter | 1.61 | 0.7 | 9506 | 18 |
| best air purifier without washable filters | 1.52 | 0.1 | 3070 | 70 |
| air purifiers for home without filters | 1.59 | 0.2 | 9719 | 68 |
| air purifier without filters | 1.26 | 0.7 | 582 | 100 |
| best filterless air purifiers | 0.35 | 0.1 | 7806 | 27 |
| best air purifier with inexpensive filters | 0.25 | 0.4 | 5328 | 74 |
| best air purifier with affordable filters | 0.37 | 0.8 | 128 | 81 |
| best air purifier no filter replacement | 0.5 | 1 | 1721 | 9 |
| best filter free air purifier | 1.76 | 0.2 | 1931 | 91 |
