These filters are of good quality and perform well in my Carrier A/C. They would probably last 3 months in my home, but I change them every two months just to be safe. This is my second order of a dozen filters and I will definitely do business with FilterBuy again.
Well with this being my first purchase I can say that the build of these filters is top notch. They have a solid frame to them and the filter material looks good and also feels good as in soft, thick and the pleats look good. I've only had one in for a day now but I can tell their is excellent air thru and when shining a bright flashlight into the air you don't see a bunch of dust particles floating around in the air so it's definitely working good there too. They are priced right and I'll be a returning customer for sure.