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by amluto 2369 days ago
As the former owner of a biggish HVAC-integrated electrostatic precipitator, these things are not really worthwhile. An ESP needs frequent cleaning to work well, in comparison to a plain old MERV 13 or so filter, which will work for quite a while with no maintenance.

An ionizer doesn’t need maintenance, but that’s because it deposits all the gunk nearby. Eww.