AC stands for “Abrasion Class” and the AC rating you can see on product descriptions is an internationally accepted system of classification of laminate flooring durability. A laminate undergoes many different testing methods, in line with the European Standard EN 13329:2016, to assess its long-term wear resistance.
Some of these testing methods involve using the taber abrasion machine, an abrasive wheel, and a leather wheel. A specific grade of sandpaper is also used, wearing away at the laminate’s surface layer until a certain point of wear is reached.
The AC rating is then a reliable and unbiased indicator of laminate flooring durability, because these tests are performed by a third party and they cover all the different ways a laminate can wear.