WOWOW FaucetsQuick Answer
To install a bathroom faucet, turn off the water, remove the old faucet, set the new faucet in the sink holes, secure the mounting nuts from below, connect the supply lines, and test for leaks.
Tools You Need
Basin wrench, adjustable wrench, plumber’s tape, a bucket and towel, and a small flashlight for working under the sink.
Step 1: Turn Off the Water
Close the hot and cold shut-off valves under the sink, then open the old faucet to release pressure. Place a bucket below the supply lines.
Step 2: Remove the Old Faucet
Disconnect the supply lines, then loosen and remove the mounting nuts and pull the old faucet up and out. Clean any old putty from the sink surface.
Step 3: Mount the New Faucet
Set the new faucet through the holes, add the gasket or plumber’s putty underneath as directed, and hand-tighten the mounting nuts from below. Do not overtighten.
Step 4: Connect and Test
Attach the hot and cold supply lines, turn the water back on slowly, and run both handles while checking for drips at every connection.
Frequently Asked Questions
Do I need plumber’s putty to install a bathroom faucet?
Only if the faucet has no rubber gasket. Follow the manufacturer’s instructions; many modern faucets use a gasket instead of putty.
How long does it take to install a bathroom faucet?
A simple same-size replacement usually takes 30 to 60 minutes for a DIYer. New plumbing or an unusual layout takes longer.
Why is my new bathroom faucet leaking underneath?
Most under-sink leaks come from loose supply-line connections or a mounting nut that needs tightening. Turn off the water and snug them carefully.
