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Moen Shower Cartridge Replacement – 1225 Cartridge

Updated on August 23, 2011
Moen shower cartridge replacement stops the dripping spout.
Moen shower cartridge replacement stops the dripping spout.

A leaky shower faucet is not only annoying, it also costs you money. A leaky single handle faucet usually has a cartridge in need of replacement. The cartridge has seals that shut off the water supply when you turn the handle to the off position. A leak is usually a sign one or more of the cartridge seals are faulty. If you own a Moen single handle shower faucet, chances are good it has a 1225 cartridge. Moen shower cartridge replacement for the 1225 cartridge is a straight forward process that most homeowners and renters can perform themselves. Replacement cartridges for Moen are available online and at home improvement centers.

Moen 1225 Replacement Cartridge
Moen 1225 Replacement Cartridge

Tools and Materials Needed for Moen Shower Cartridge Replacement



Phillips-head screwdriver

Allen wrench

Flat-head screwdriver

Needle-nose pliers

Slip-joint pliers

Moen cartridge puller (optional)

Replacement Moen 1225 cartridge

Moen Shower Cartridge Replacement – Removing The Faulty Cartridge

Find the water shut off valve to the shower. Most often there is an access panel in the adjacent room of the shower fixture wall. Locate the access panel, which might be in a closet, and turn the shut off valves clockwise to turn off the water supply.

Turn on the Moen shower faucet to allow any residual water to drain from the lines. Once there is no more water draining, turn off the shower faucet. Place a rag or towel over the tub drain to help prevent dropping small parts down the drain. It is also a good idea to lay a towel or sheet inside the bottom of the tub to protect the tub finish while you are inside.

Remove the screw securing the Moen shower faucet handle with a Phillips-head screwdriver or Allen wrench. The screw is under the curve of the faucet handle, if you have a lever-type handle. If you have a rotary handle, pop the center cover off with a flat-head screwdriver to access the securing the screw. Pull the faucet handle away from the wall once you remove the securing screw.

Turn the screw securing the handle adapter to the top of the cartridge assembly counterclockwise with the Phillips-head screwdriver. The handle adapter is a small plastic piece between the handle and the top of the cartridge. Pull the handle adapter away from the faucet.

Remove the screws securing the escutcheon plate to the shower wall with the Phillips-head screwdriver. The escutcheon plate is the large decorative plate that covers the rough plumbing hole and surrounds the cartridge. Pull the escutcheon plate away from the wall. Grab the metal or plastic sleeve covering the shower cartridge and valve assembly and pull it away from the wall.

Find the c-clip securing the Moen 1225 cartridge to the shower valve. The clip is visible and should be slightly raised. The clip is near the front of the cartridge. Some Moen shower cartridges use two clips, one up front and one near the back of the cartridge. Pull the clip out with a pair of needle nose pliers.

Grab the tip of the Moen 1225 cartridge with a pair of slip-joint pliers, and pull the cartridge straight out of the shower valve. If the cartridge does not pull out with the pliers, it might be necessary to use a Moen cartridge puller. Cartridge pullers for Moen are available at home improvement centers. They lock over the shower valve and pull the cartridge out while using the shower valve for leverage.

Moen Shower Cartridge Replacement – Installing New 1225 Moen Cartridge

Insert the new Moen 1225 cartridge into the shower valve, lining up the ears on the end of the cartridge with the c-clip notches on the shower valve. Push the cartridge fully into the shower valve.

Line up the c-clip in between the cartridge ears and the notches on the shower valve. Push the c-clip through the cartridge and shower valve until it is flush with the top of the cartridge. Slide the metal sleeve over the cartridge and shower valve. The half-square part of the sleeve should point up when installing.

Position the escutcheon plate over the sleeve and flush against the shower wall. Secure the plate with the retaining screws. Place the handle adapter over the end of the Moen cartridge and secure it with the retaining screw.

Push the handle over the shower valve, and secure the handle with the screw. If you have a rotary handle, push the center cover plate over the top of the handle until it snaps into place.

Turn on the water supply valves. Remove the towels and sheet out of the tub, and enjoy your dripless Moen shower faucet.


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    • Simone Smith profile image

      Simone Haruko Smith 6 years ago from San Francisco

      I've never had a leaky shower cartridge before, but now I know what to do should the one I have give me any trouble. Thanks!