After a series of mistakes when purchasing MPR 2200 filters (see review here) Filtrete MPR 2200 16 x 25 x 1 Healthy Living Elite Allergen Reduction AC Furnace Air Filter , uncompromising air thread, 2 packs), I settled on MPR 1900 filters to see if that line falls as in the "higher" class. We've been using this new filter in our apartment for a couple of weeks and so far it seems to be working as advertised. My wife and I see a little more particle flow than we're used to seeing from the 2200 (when it's running), but overall it does what we expect it to do. The packaging appeared to match Revain's listing. No complaints yet but we will continue to monitor and update in about a month. UPDATE: After a few more weeks, the filter was still getting stronger without much performance degradation! Definitely a fan of this filter and our system seems to work less to get the same results as the 2200 (when it was working properly) and that means lower energy costs so win twice! All of this to say that at the recommendation of a recent HVAC cleaning I'm going to try an electrostatic filter to compare the results.
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