How to Replace a Kitchen Faucet
Swap your old faucet for a modern upgrade
Mike Rodriguez Updated 2025-10-15 60 min 7 stepsReplace your kitchen faucet with a new one. This guide walks you through removal, installation, and testing for leaks.
60 min
Time Required
$80 – $250
Estimated Cost
7
Steps
medium
Safety
What You'll Need
Tools
Materials
Step 1 of 7
Turn Off Water Supply
Shut off the hot and cold water valves under the sink. Turn on the faucet to relieve pressure and drain remaining water.
Warning
If you don't have shut-off valves, you'll need to turn off the main water supply.
Step 2 of 7
Disconnect Supply Lines
Place a bucket under the connections. Use a wrench to disconnect the hot and cold supply lines from the old faucet. Let residual water drain into the bucket.
Step 3 of 7
Remove Old Faucet
Use a basin wrench to reach up behind the sink and loosen the mounting nuts. Disconnect any sprayer hose. Lift the old faucet out and clean the mounting surface.
Tip
A basin wrench is specifically designed for tight spaces under sinks. It's worth buying.
Step 4 of 7
Install New Faucet
Follow the manufacturer's instructions. Typically: place gasket on faucet base, insert through sink holes, and secure from underneath with mounting nuts. Apply plumber's putty if specified.
Step 5 of 7
Connect Water Lines
Wrap plumber's tape around threaded connections. Connect hot (left) and cold (right) supply lines. Tighten firmly but don't overtighten — hand-tight plus a quarter turn is usually sufficient.
Common Mistake
Cross-threading the connections — start by hand to ensure threads are properly aligned.
Step 6 of 7
Test for Leaks
Slowly turn on the water supply valves. Check all connections for leaks. Run both hot and cold water for a few minutes. Check underneath again for any drips.
Step 7 of 7
Final Adjustments
Adjust the faucet position if needed. Tighten any connections that drip. Install the drain assembly if included. Enjoy your new faucet!
Pro Tip
Keep your old supply lines as backup. Replace them every 5-10 years to prevent bursting.
