How do I perform a faucet aerator replacement?

To perform a faucet aerator replacement, first, unscrew the existing aerator from the faucet spout using pliers or a wrench. Then, clean the threads on the faucet spout to remove any debris. Next, screw the new aerator onto the faucet spout by hand, making sure it is securely attached. Finally, test the faucet to ensure the new aerator is working properly.