Honestly I didn't want to go as high as MERV 12 for my 2-ton SEER 14 HVAC system, but the brand I was purchasing MERV 10 filters from lowered the quality of their products. 3M makes good products and as long as my system doesn't work too hard to push air through filters this high rated then I believe it'll be fine.

Best price I've found for these ultra filters. Colds and flu are much decreased since starting to use these filters. Dust is minimal (for Nebraska). Would recommend it someone in your family has pets or allergies.

Excellent filter at a great price! It fit perfectly, seems very well made, and gives me confidence in the air quality in my home. Definitely a great deal.

They fit the opening OK and seem to work fine. I can't tell by using them if they do or do not capture allergens, bacteria and viruses.

The size printed on the filters I bought were not true to size. They were too large and we could not get them to fit. I took them back and bought filters at Home Depot. Perfect fit.

These have made a big difference in the amount of dust we get on our furniture. Plus the price for 4 is what you would pay for only 2 at most other stores.

These are great. We switched out after six months and it was disgusting to see the collection of dust particles. Great to know it wasn't in the air we breathe.

We have used the Filtrete air cleaners in our a/c and heater for many years and have been very happy with them. They will easily make it two months without replacing, but we choose to replace them every month.

These are good filters. We have 3 long hair dogs in the house so we change the filter every 6 weeks or so. So glad that Sam's Club has them for a sweet deal!

Good value but filter size is just a hair too big for the vent. Had the same problem with our previous house and this brand. Requires bending the filter a little to make it fit. Wish a big company like 3M would cut these to proper size.