This is the second time I order Nordic Pure filters. They work well, help clean the air, and are fairly effective for their 18 HEPA rating (a higher HEPA rating means more resistance to the air flowing through them, so you need a balance). The price is good and they last a lot longer in smaller parts of the house where we don't run the HVAC that often. Even if one of them was not (accidentally) replaced for 6 months, it was still breathable and worked well with the layer of dust on the cleaning material. Yes, I will order them again. This is a genuine review from someone who actually bought it twice from Revain.
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