| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| best hepa air purifier 2015 | 0.56 | 0.6 | 5628 | 70 |
| best hepa air purifier 2016 | 1.76 | 0.2 | 3415 | 56 |
| best hepa air purifier 2012 | 0.39 | 0.7 | 1637 | 32 |
| best hepa air purifier 2018 | 0.01 | 0.4 | 5702 | 75 |
| best hepa air purifier 2017 | 0.73 | 0.8 | 1574 | 86 |
| best hepa air purifier 2018 for dust mites | 0.34 | 0.9 | 1817 | 35 |
| best hepa air purifier 2020 | 1.3 | 0.3 | 9903 | 21 |
| best hepa air purifier for pet allergies 2016 | 1.68 | 0.6 | 4310 | 29 |
