Review on 🔍 Nordic Pure 14x14x1 Pleated Furnace Air Filter by Tres Carmon

The last previous evaluation usually indicates a reduction in quality. I hesitated before buying these filters but I needed MERV13+ filters as I currently live in a smoke prone area due to wildfires. a sign that it is indeed an inferior MERV: there is nothing special written on the filter, and the design is similar to the MERV 13 20x25 I found at a home storage facility. I have an air quality sensor in my house and it clearly shows an index <10 when the stove fan is running. After stopping, the index jumps, so after filtering out 2.5µm particles it seems pretty good.