HEPA-Filtered Indoor Air
A true-HEPA air purifier sized to the room.
86Minimal burden · out of 100
Evidence strengthstrong
How this score is built
- 100Start
- 95.4Chemical hazard 1 × 4.6−4.6
- 88.6Everyday exposure 2 × 3.4−6.8
- 86Persistence 1 × 2.6−2.6
- MinimalThe band86 sits in 80–100.
What each input rests on
| Input | Rating | Evidence |
|---|---|---|
| Chemical hazard | 1/10 | unsourced input |
| Everyday exposure | 2/10 |
|
| Persistence | 1/10 | unsourced input |
Ratings are editorial. A study listed here supports the rating; it did not compute it. How the index is built
What this means for you
One of the highest-value, lowest-effort exposure reductions: a correctly sized HEPA unit measurably cuts indoor PM2.5, pollen and many particulates.
Evidence strength: strong
See where your whole exposure load is highest — free Exposure Score →This entry and the whole Index, on your phone.
