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Some lab tests conducted by a TV show gave the Box Fan With HEPA Filter the highest marks over commercial air purifiers: https://news.ycombinator.com/item?id=2
by cf100clunk 5y ago
Some lab tests conducted by a TV show gave the Box Fan With HEPA Filter the highest marks over commercial air purifiers:
https://news.ycombinator.com/item?id=26101153 https://news.ycombinator.com/item?id=26101153
- Johnny555 5y agoThey didn't give the box fan the highest marks, but they found that it outperformed some commercial products, including the $800 Dyson (which has a very bad price-performance ratio)