NORDIC PURE MERV 12 PLEATED FURNACE AIR FILTER REVIEW

February 28, 2021
6.2 / 10 Filterstudy Score
PFE1 Efficiency (0.3-1 μm)6
PFE2 (1-3 μm)2.9
Permeability / Pressure Drop9.7
Pros
* Excellent permeability.
* Great dust holding capacity (leads to lower maintenance).
Cons
* Terrible PFE1 filtration efficiency (sub micron particles).
* Super-low PFE2 filtration efficiency.
* Quite a difference between the advertised MERV rating, and the tested MERV rating.

The Nordic Pure 20x25x5 “MERV 12” Pleated Furnace Filter we had tested actually came out at MERV 7 (vs. the advertised MERV12).

With a permeability score of 9.71 (higher means better), this furnace & AC filter offers an excellent pressure-delta. The lower the pressure delta, the better your HVAC system would perform, which is probably why many HVAC installers would usually recommend this filter (vs. more restrictive air filters).

With a 6-12 months replacement frequency, the dust holding capacity of the Nordic Pure 20x25x5 “MERV 12” Pleated Furnace Filter is considered as high, which we quite like as more maintenance an HVAC system requires, the more likely it would end up being neglected altogether.

The filtration performance of the Nordic Pure 20x25x5 “MERV 12” Pleated Furnace Filter is poor at best. At the sub-micron level, this filter offers almost no protection (tested at 6% @ 0.3-1µm) and very low protection at the 1-3µm level (29%). The performance of this filter at the 3-10µm level is less-than-Ok (64.9%), however, Fltest.org does not incorporate this category into the weight of our scores.

Filter Facts

Advertised MERV rating: 12
Tested MERV Rating: 7
Number of pleats: 20
Dimensions: 20″x25″x5″

Filter Facts

Advertised MERV rating: 12
Tested MERV Rating: 7
Number of pleats: 20
Dimensions: 20″x25″x5″

{{ reviewsOverall }} / 10 Users (0 votes)
PFE1 Efficiency (0.3-1 μm)0
PFE2 (1-3 μm)0
Permeability / Pressure Drop0
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2021 | FilterStudy