Fix Leaky Bathroom Faucet Single Handle

Fix a Leaky Bathroom Faucet with a Single Handle

When you have a leaky faucet, it can be a real nuisance because it wastes water and can increase your utility bills. Fortunately, fixing a single-handle bathroom faucet is a relatively simple DIY project that you can complete in about an hour.

Tools and Materials you'll need:

Adjustable wrench
Phillips screwdriver
Flathead screwdriver
Replacement cartridge
Plumber's putty
Rags

Step-by-Step Instructions:

Turn off the water supply.There should be two shut-off valves beneath the sink, one for hot water and one for cold water. Turn both valves clockwise to turn off the water supply.
Open the faucet. This will release any remaining water in the faucet and lines.
Remove the aerator. The aerator is the small, screen-like attachment at the tip of the faucet. Use a wrench to unscrew it.
Remove the handle. Most single-handle faucets have a small screw on the top of the handle. Use a screwdriver to remove the screw, then pull the handle straight up to remove it.
Remove the cartridge. The cartridge is the part of the faucet that controls the flow of water. Use a wrench to loosen the nut that holds the cartridge in place, then pull the cartridge straight out.
Inspect the cartridge. Look for any signs of damage or wear. If the cartridge is damaged, you will need to replace it.
Install the new cartridge. If the cartridge is damaged, insert the new cartridge into the faucet body and tighten the nut to secure it.
Reinstall the handle. Push the handle back onto the faucet body and tighten the screw.
Reinstall the aerator. Screw the aerator back onto the faucet.
Turn on the water supply. Open the shut-off valves beneath the sink to turn on the water supply.
Check for leaks. Open the faucet and check for any leaks. If you see any leaks, tighten the packing nut or replace the O-rings.

Tips:

If you are not comfortable working on plumbing, you can call a plumber to fix the leak.
Be sure to turn off the water supply before you start working on the faucet.
Use a flashlight to see inside the faucet if you have trouble removing the cartridge.
If you have a hard time removing the handle, you can try using a penetrating oil to loosen it.