How To Change Cartridge In Moen Single Handle Bathroom Faucet

Moen single-handle bathroom faucets are a popular choice for homeowners due to their ease of use and stylish design. However, like any other fixture, they may eventually need repair or replacement. If your Moen single-handle bathroom faucet is leaking or dripping, the problem may be with the cartridge. Replacing the cartridge is a relatively simple task that can be completed in a few minutes with the right tools and materials.

Gather the Necessary Tools and Materials

Before you begin, you will need to gather the following tools and materials:

Phillips head screwdriver
Adjustable wrench
Replacement Moen cartridge (make sure it is the correct size and model for your faucet)
Plumber's putty
Flashlight (optional)

Turn Off the Water Supply

Once you have gathered the necessary tools and materials, you will need to turn off the water supply to the faucet. There are typically two ways to do this:

Locate the shutoff valves for the hot and cold water lines under the sink. Turn the valves clockwise to turn off the water supply.
If there are no shutoff valves under the sink, you can turn off the main water supply to the house.

Remove the Handle

Once the water supply is turned off, you can remove the handle from the faucet. To do this, use a Phillips head screwdriver to remove the set screw that is located on the side of the handle. Once the set screw is removed, you should be able to pull the handle off of the faucet.

Remove the Cartridge

With the handle removed, you will be able to see the cartridge. The cartridge is typically held in place by a clip or a nut. Use the adjustable wrench to loosen the clip or nut and remove the cartridge from the faucet body.

Apply Plumber's Putty

Before you install the new cartridge, you will need to apply plumber's putty to the threads of the faucet body. This will help to create a watertight seal. Use your fingers to apply a thin layer of plumber's putty to the threads.

Install the New Cartridge

Insert the new cartridge into the faucet body. Hand-tighten the cartridge until it is snug. Then, use the adjustable wrench to tighten the cartridge until it is secure.

Reinstall the Handle

Reinstall the handle by sliding it back onto the faucet body. Use the Phillips head screwdriver to replace the set screw. Tighten the set screw until it is snug.

Turn On the Water Supply

Turn on the water supply to the faucet. Check for leaks. If there are no leaks, your faucet is now repaired.

Important Tips:

Make sure that you purchase the correct cartridge for your Moen single-handle bathroom faucet. There are many different models of Moen faucets, so it is important to get the right cartridge.
When you are removing the old cartridge, be careful not to damage the faucet body.
If you are having trouble removing the old cartridge, you can use a flashlight to get a better look at the clip or nut that is holding it in place.
When you are installing the new cartridge, make sure that you apply plumber's putty to the threads of the faucet body. This will help to create a watertight seal.
If you are not comfortable working on plumbing fixtures, you can always call a professional plumber for help.