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by nostrademons
1960 days ago
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No objective data, because what I care about is usually "Am I choking on smoke? Will I stop choking if I run the air filter?" Subjectively we were still having problems with just the BlueAir (~1000 sq ft apartment), add the box fan and things got better, take away the BlueAir and things are still better. The filter on the box fan also got black faster, which is our indication that it pulled more particles out of the air. Makes a lot of sense, because the actual filter material is the same (they both use HEPA filters inside) but the box fan blows a greater volume of air through a larger filter area. |
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This is not a good indication.
The larger black particles are not nearly as harmful to you, and generally just fall to the ground. BlueAir and other vertical filters attempt to make sure they don't waste your filter on these large objects, and pull the smaller particles out of the air. Box fans pull a lot off the floor, which isn't super helpful.
The CADR takes into account the differences you speak of, because it measures the amount of clean air. You may enjoy the fans more, but the filter material being the same doesn't mean a box fan cleans air any better.