Faucets come with installation instructions, so you can install a faucet yourself. However, you will need the proper tools, and it helps to have some experience with this type of work. If you don't install the faucet properly it could result in leaks or the faucet not working properly. If you're unsure, your best option is to contact a plumber. A professional plumber will ensure your faucet is installed properly the first time.