Once you've determined the right type of faucet, it's time to install it. Then, you'll need to remove the faulty tap. Before removing the old faucet, you need to turn off the water supply and remove the old one. Then, turn on the water to the new faucet. After the new faucet is installed, you can screw the old one back into place. Then, you'll have to reconnect the hot and cold pipes.