Excellent Customer Service Response First time ever, I received the wrong order. Size sent was 17"x25"x1". Mine were supposed to be 20"x21.5"x1". I called them and they apologized and said that they would immediately send out the replacements. So the rating is the middle ground. 5 stars on the customer service and 1 star for the original order. Great Company to work with and excellent products. Update: The replacement filters arrived four days later.

Bought 20x20x4 filters. They're not even close to that size. Bought 20x20x4 filters. These are a standard size available at any hardware store. Typically 19 5/8 x19 5/8. Filterbuys were 19 3/8 x 19 3/8 and weren't same thickness either. (smaller all around) So needless to say, they don't fit. Not sure how they can list it at 20" when it's much closer to 19". Very misleading on their website. Had to pay for return myself.

Good Customer Service I love that I can get these filters when places I go to run out but they didn't package or box these for protection. They just tightly shrunk wrapped them in plastic w/ a label and that's it. UPS delivered mine today and one of the outside ones was crushed, which I suppose was their fault, not the company. These filters are delicate so to be shipped, unpackaged w/ a tight shrink wrap on a UPS truck with heavy boxes can be problematic. I'm so disappointed however, the company did reach out to make things right and I respect that. I initially put a one star review but that's not fair. I give them 5 now because their customer service is on top of it not to mention they monitor their reviews. I'll order again from them. Second chances are always a good thing.

Smaller Than Standard 20x20x4 Filter Size The positive: good price and fast shipping. The negative: Their 20x20x4 Filters are much smaller than 20x20x4 filters made by the name brands. As a result, they don't fit properly in my air handler. Rather than pay to send them back, I am going to glue a cardboard frame to them to make them fit properly. In addition, the manufacturing quality of the filters are suspect. Name brands have spacers that keep the pleats evenly spaced. These Filterbuy filter pleats are not evenly spaced and the pleats are bunched up near the edges. They are also glued into place and cannot be adjusted. Save yourself the hassle and get name brand filters or be sure to verify that the ACTUAL size of the filter will fit your application.

Low price filters here are better than… Low price filters here are better than comparable filters from big box stores. Before filterbuy, my filters were bowing inward. The cardboard frame is very sturdy keeping my filters straight after a month. Which leads me to the subscription, it's a good and easy reminder to change. I'm an HVAC technician, I'm happy with this service and I recommend them all the time.