Changing your sink's tap is a simple job accomplished without the help of a plumber or any special equipment. A few wrenches and some plumber's putty will allow you to remove the damaged or old tap, and install one that better suits your decor or has better functionality. Whether you are replacing a bathroom or kitchen tap, the steps are generally the same. Read the manufacturer's instructions that come with the new tap before installing it.
Place a bucket underneath the water lines underneath the sink. Turn the hot and cold water supply lines off. Open the tap to release any water left in the lines.
Disconnect the hot and cold water supply lines that run from the base of the tap under the sink. Use one adjustable wrench to hold the line in place, and use another to loosen the nut to disconnect the lines.
Loosen the nuts holding the tap in place under the sink using a basin wrench. Remove them with your hands, and then from above, pull the tap off the sink.
Scrape away any old plumber's putty from the sink surface with a putty knife. Wipe down the surface with a damp cloth and then a dry towel.
Turn the putty plate upside down and fill the putty grooves with plumber's putty. Lower the putty plate over the holes in the sink. Place the deck plate over the putty plate.
Lower the supply lines through the holes in the deck plate and position the tap so it faces the correct direction. Twist the nuts onto the bottom of the tap underneath the sink and tighten them with a basin wrench.
Connect the water supply lines to the lines attached to the tap and tighten them with adjustable wrenches. Turn the water supply back on. Turn the tap on and check the connections for leaks. Turn the tap off and wipe off any excess putty on the deck plate.