Hire a plumber. Mess something up, and you’ll end up flooding the place or other units. Lots of liability there with other units. Also a plumber can probably fix it within an hour. Might take you a few hours running back and forth to the store etc. Answer from Deleted User on reddit.com
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Mr. Rooter
mrrooter.com › home › about/blog › how to replace shower cartridge
How to Replace a Shower Cartridge | Mr. Rooter Plumbing
You’ll likely need a hex wrench for this task. Remove the screws that hold the flat plate surrounding the handle in place. This is called the escutcheon. Once the screws are out, the escutcheon should slide out freely.
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Reddit
reddit.com › r/diy › replacing shower cartridge?
r/DIY on Reddit: Replacing Shower Cartridge?
June 1, 2022 -

Wife is out of town and thought of surprising her by replacing the showerhead since we had a steady drip. When I took it off the drips continued. Under more research it seem's that for that to happen it's a bad/old shower cartridge.

I've seem multiple videos, some with once you take the faceplate of the shower handle off, there are valves behind it that will shut the water off. Others don't have those valves that I need to turn water off to the whole house to prepare.

I have the showerhead off already. I can't figure out to take the handle/faceplate off as I can't find any screws

  1. I can't turn water off to my unit without shutting off 3 other units as it's a townhouse with shared pipes. I world 8-5 and won't inconvenience them during outside those hours.

  2. Place was built in 1963 and the square hole behind the faceplate that part of it is visible makes me think I have the kind where I can tighten the screws behind the faceplate to replace the cartridge without interfering water shutoff for everyone.

  3. How do I take this faceplate off?

  4. It's unfeasible/complex and I should have a plumber do it to minimize the water being shut off and I don't mess something up.

Wife is back this Saturday and I have a lockbox for if I need a plumber to handle it - will handle it if I am not home.

Thanks!

People also ask

What’s the difference between a shower valve and a shower cartridge?

While you may hear people using the terms shower valve and cartridge interchangeably, they’re two different things. It can get confusing because the shower cartridge is a component inside the shower valve. The cartridge helps manage the temperature by balancing the mix of hot and cold water.

The signs of a failing valve and cartridge are similar, but if you’re having problems with water temperatures, you’ll likely need to replace the entire valve.

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angi.com
angi.com › solution center › remodeling
How to Replace a Shower Cartridge in 9 Simple Steps | Angi
Are shower cartridges universal?

Shower cartridges are not universal, which makes shopping for a new one a little tricky. The good news is that if you don’t know what you need, you can remove the existing cartridge and check for the brand and model.

Your shower valve and cartridge should match and come from the same manufacturer. Mixing and matching different brands of valves and cartridges is not likely to work and may cause potential issues like leaks, malfunctioning faucets, and more.

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angi.com
angi.com › solution center › remodeling
How to Replace a Shower Cartridge in 9 Simple Steps | Angi
What is the life expectancy of a shower cartridge?

The life expectancy of a shower cartridge is 10 to 30 years, although it depends on several factors. Stainless steel and brass cartridges last 10 years or longer, while plastic ones can fail after five years. Secondly, the water quality in your home is a factor. If you have hard water, your cartridge will likely clog faster and fail sooner due to the hard mineral buildup. You can avoid this by installing a water softener or cleaning the cartridge every two to three years.

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angi.com
angi.com › solution center › remodeling
How to Replace a Shower Cartridge in 9 Simple Steps | Angi
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The Shower Company
theshowerco.com › a-step-by-step-guide-to-replacing-your-shower-cartridge
A Step-By-Step Guide to Replacing Your Shower Cartridge - The Shower Company
October 31, 2023 - Now that the new cartridge is installed, it’s time to reassemble the shower. Start by replacing any trim plates or escutcheons you removed in Step 3. Then, slide the shower handle back into place, aligning it with the cartridge stem.
Price   $$$
Address   8301 NW 101 Terrace Suite 8, 64153, Kansas City
(4.9)
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This Old House
thisoldhouse.com › home › how to replace a shower cartridge
How To Replace a Shower Cartridge - This Old House
Replace the retaining clip to secure the cartridge. Reassembling the shower components: Apply a bead of silicone caulk around the back of the escutcheon plate for a watertight seal. Reattach the escutcheon plate and shower handle.
Published   July 8, 2025
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Mr. Rooter Plumbing
mrrooter.ca › home › about/blog › how to replace shower cartridge
How to Change a Shower Cartridge Like a Pro | Mr. Rooter Plumbing
Fortunately, this task is straightforward for those with a little DIY knowledge. Follow these steps below: Before you start the cartridge replacement process, turn off the water to your shower. Your water shut-off valve may be near your shower or in the basement. Alternatively, locate your main water shut-off valve and turn off the water supply to your entire house. Shower cartridges are hidden out of sight behind your shower handle.
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1 Tom Plumber
1tomplumber.com › single-handle-shower-cartridge
How To Replace A Single-Handle Shower Cartridge | 1-Tom-Plumber
June 27, 2025 - Insert the new replacement cartridge with the flat part of the stem facing up. This will ensure that the hot and cold water are not reversed. Reinstall the retainer clip, stop tube, and handle.
Find elsewhere
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The Spruce
thespruce.com › how-to-replace-a-shower-valve-5197461
How to Replace a Shower Valve
June 25, 2025 - Learn how to replace a shower valve cartridge by removing the shower handle and cover, and then replacing the old shower valve cartridge with a new one. It's important to replace the valve cartridge with the same type of cartridge so it fits ...
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Angi
angi.com › solution center › remodeling
How to Replace a Shower Cartridge in 9 Simple Steps | Angi
October 20, 2025 - The shower cartridge is part of the shower valve behind the shower wall. It controls the water flow and temperature and connects the shower valve to the handles. Every handle is a little different. If it's not apparent by looking (e.g., a screw is attached to the handle), do an online search for the make and model of your handle with the term "removal” to find instructions for removing it.
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Better Homes & Gardens
bhg.com › home-improvement › plumbing › how-to-fix-replace-tub-shower-faucet-cartridge
How to Replace a Shower Cartridge to Fix Your Faulty Faucet
October 27, 2025 - ... Insert the new or cleaned cartridge back into the faucet, making sure that you keep the correct orientation. Slide in the retaining clip and reattach the handle and escutcheon.
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JustAnswer
justanswer.com › plumbing › pls6o-replacing-stem-cartridge-mixer-shower.html
Shower Cartridge Replacement Help: Troubleshooting Tips
I am replacing the stem cartridge and mixer to my shower handle. The screws on the side do not want to to catch
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RBROHANT
rbrohant.com › home › how to replace a shower cartridge: easy diy guide
How to Replace a Shower Cartridge: Easy DIY Guide
Once the cartridge is securely in place, reattach the trim plate and handle. Tighten any screws or nuts that were removed earlier, and check that everything is firmly in position. Be careful not to overtighten, as this could damage the parts. With everything reassembled, turn the water supply back on. Slowly open the shower ...
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WELLFOR
wellfor.com › home › projects from the pros › projects from the pros
How to Change a Shower Cartridge|WELLFOR
October 10, 2024 - Handle issues: The handle feels loose or stiff or doesn't turn smoothly. Tools and Materials You'll Need Before you start the replacement process, gather the following tools and materials: Screwdriver (flathead or Phillips, depending on your faucet) Adjustable wrench or pliers Cartridge puller (optional, depending on your faucet model) New shower cartridge (compatible with your faucet model) Teflon (plumber's) tape Plumber's grease (optional for lubricating seals) Cloth or towel to protect the faucet finish If you're working with a modern brushed nickel shower faucet, handling the components carefully is especially important to avoid scratching or damaging the finish.
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Mr. Rooter Plumbing
mrrooter.ca › home › about/blog › how to replace shower faucet
How to Replace a Shower Faucet | Mr. Rooter Plumbing
Place a towel over the nut before turning it to avoid scratching the paint. Remove the faucet handle(s): If your faucet handles have a cover plate, pry it off with a small screwdriver.