| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| best hepa air purifier 2016 | 0.24 | 0.3 | 9591 | 94 |
| best hepa air purifier 2018 | 1.24 | 0.2 | 757 | 97 |
| best hepa air purifier 2017 | 0.23 | 0.7 | 7005 | 76 |
| best hepa air purifier 2018 for dust mites | 1.63 | 0.4 | 101 | 3 |
| best hepa air purifier 2015 | 0.99 | 0.6 | 9870 | 27 |
| best hepa air purifier 2012 | 0.08 | 0.5 | 6155 | 92 |
| best hepa air purifier 2020 | 0.51 | 0.2 | 2611 | 69 |
| best hepa air purifier for pet allergies 2016 | 1.19 | 0.2 | 611 | 40 |
| best true hepa air purifier 2018 | 0.99 | 0.8 | 2642 | 13 |
| best true hepa air purifier 2018 for smoke | 1.16 | 0.5 | 563 | 33 |
| 2018 best air purifier true hepa auto sensor | 1.4 | 0.1 | 1424 | 26 |
