BNX TruFilter 20x20x1 MERV 13 (4-Pack) AC Furnace Air Filter - MADE IN USA - Electrostatic Pleated Air Conditioner HVAC AC Furnace Filters - Removes Pollen, Mold, Bacteria, Smoke (Actual Size: 19 11/16’’ x 19 11/16’’ x 3/4‘’)

Works fine

I went up from MERV 8 filters to these MERV 13 filters and Im very satisfied! They dont seem to choke the air coming into the AC unit, and I dont choke when I burn a burger. MERV 8 was good for stopping dust, but MERV 13 just seems worlds apart with filtered air quality.

Could not figure out which direction to install these. My apartment maintenance guy double checked, and now I know how to do myself. These are far superior to what my apartment complex uses.

These are great to double up on a box fan to act as air purifier in the room. Doesn’t impede the fan much.

I ended up replacing these with more typical filters because the airflow resistance of the very fine material was so strong that my AC return made an annoying whistling noise. The problem with extremely fine filter material like this is that most AC systems are not built to tolerances that ensure the only air comes through the filter. So if you increase the resistance of airflow through the filter, any openings in the air duct - sections that arent perfectly sealed, or flexible ducts that have gotten nicked during installation or *shudder* cleaning, airs going to enter there. And that air is going to come with whatever material is floating around in your walls and ceilings, which might include insulation material, abundant dust, or whatever else works its way into the house. If your application is something like a portable AC unit or a truly sealed system, these are great. (just remember to change them, because yeah, they DO pick everything up!) For use in a typical residential system, I would say they have more downside than benefit, including the higher cost and more frequent need for replacement.

I had a little issue when getting this filter in. When it arrived the box was crushed which was disappointing because the filter itself had a crease down both sides which I was not comfortable putting in my AC filter drawer. I contacted the seller and got a replacement order sent. When the new filter arrived it was in great shape. No issues. This filter is much better than the one Ive been using. The design is similar, but the filters look higher grade on this compared to the ones I normally use.

The construction quality of the filters seems to imply that the quality of the filter media can be counted on. The filter media is supported by what appears to be an aluminum mesh mounted within a cross-linked cardboard frame fully self-supporting that fits well in my blower unit.

Made in USA.

Value

Thankful