What a Moen 1222 cartridge does and why you need to replace it

The Moen 1222 is a single-handle cartridge that controls water temperature and flow in your faucet. When it wears out, you'll notice the handle becomes hard to move, water leaks from the spout even when the handle is off, or the faucet won't shut off completely. Replacing the cartridge itself—rather than the entire faucet—costs between $15 and $40 and takes about 20 to 30 minutes if you have basic tools.

The 1222 fits Moen single-handle kitchen and bathroom faucets made from the 1980s onward. Before you start, confirm your faucet uses this cartridge by checking your manual or calling Moen's customer service at 1-800-BUY-MOEN. If you have the wrong cartridge number, the new one won't fit.

Key Takeaways

  • Turn off the water supply under the sink before you begin, or shut off the main water valve if you cannot locate the shutoff.
  • Remove the handle by prying off the cap with a flathead screwdriver, then unscrew the handle screw underneath.
  • Use a cartridge puller tool (rented or bought for $10 to $25) to extract the old cartridge; attempting to pull it by hand usually fails and can damage the faucet body.
  • Insert the new 1222 cartridge with the tab aligned to the notch in the faucet body, then reassemble the handle and test for leaks.
  • If water still leaks after replacement, the O-rings inside the faucet body may also need replacing, which requires a separate repair kit.

Turn off the water supply

Locate the shutoff valves under your sink—there should be two, one for hot water and one for cold. Turn both clockwise until they stop. If you cannot find shutoff valves under the sink, or if they don't work, you'll need to shut off the main water valve for your house, usually found in the basement, crawlspace, or outside near the meter.

After shutting off the water, turn on the faucet handle and let any remaining water drain out. This prevents water from spraying when you remove the cartridge.

Remove the handle and trim ring

Look at the top of the handle for a small decorative cap—usually plastic or metal with the Moen logo. Use a flathead screwdriver to pry this cap straight up and off. You may need to wiggle it gently; it's held in place by friction, not screws.

Underneath the cap, you'll see a single screw. Remove this screw with a Phillips head screwdriver and set it aside in a small container so you don't lose it. Pull the handle straight toward you to remove it completely.

Next, locate the trim ring—a collar that sits where the handle meets the faucet body. Some trim rings unscrew by hand; others require a wrench. If it doesn't turn easily by hand, use an adjustable wrench to turn it counterclockwise. Once removed, set it aside.

Extract the old cartridge with a puller tool

The cartridge sits inside the faucet body and is held in place by a retaining nut. You'll see this nut at the center of the faucet where the handle was. Use an adjustable wrench to turn this nut counterclockwise and remove it completely.

Now comes the critical step: removing the cartridge itself. Do not try to pull the cartridge out by hand. The cartridge is tight and pulling hard will either break it inside the faucet or damage the faucet body. Instead, rent or buy a Moen cartridge puller (also called a cartridge removal tool). Home Depot and Lowe's rent these for $5 to $10, or you can buy one for $15 to $25. The puller threads onto the cartridge stem and uses leverage to extract it safely.

Thread the puller onto the cartridge stem, then turn the handle clockwise. The cartridge will slide out slowly. Once it's out, set the old cartridge aside—you don't need it anymore.

Install the new 1222 cartridge

Before inserting the new cartridge, look at the faucet body where the cartridge came out. You'll see a small notch or slot on the rim. On the new cartridge, there's a corresponding tab or flat edge. Align the tab to the notch—this ensures the cartridge sits in the correct position and the handle will work properly.

Slide the new cartridge straight into the faucet body, pushing it in until it stops. It should go in smoothly; if you feel resistance, stop and check that the tab and notch are aligned. Once the cartridge is fully seated, thread the retaining nut back on by hand first, then tighten it with an adjustable wrench. Turn the wrench clockwise until the nut is snug—don't over-tighten, as this can crack the cartridge.

Reassemble the handle and test for leaks

Screw the trim ring back on by hand, turning it clockwise until it's hand-tight. If it was originally tight enough to need a wrench, use the wrench again, but only until snug.

Reattach the handle by sliding it back onto the cartridge stem and inserting the screw. Tighten the screw with a Phillips head screwdriver—it should be snug but not forced. Finally, press the decorative cap back onto the handle until it clicks or sits flush.

Turn the water shutoff valves back on by turning them counterclockwise. Turn on the faucet and check for leaks around the base where the cartridge sits. A small drip is normal for the first few minutes as air escapes the lines. If water continues to leak after 10 minutes, turn the water off again and check that the retaining nut is tight.

What to do if the faucet still leaks after cartridge replacement

If the new cartridge stops the leak but water still drips from the spout when the handle is off, the problem is likely worn O-rings inside the faucet body, not the cartridge itself. These rubber seals wear out over time and must be replaced separately. You'll need a Moen O-ring repair kit for your specific faucet model, which costs $8 to $15.

Replacing O-rings requires removing the cartridge again and disassembling the faucet body. If you're not comfortable doing this, a plumber can complete the repair in under an hour. If the leak is coming from under the sink where the faucet connects to the supply lines, the problem is a loose connection or worn supply line, not the cartridge—tighten the connection with a wrench or replace the supply line.

Frequently Asked Questions

Can I replace the cartridge without turning off the water?

No. Water will spray out when you remove the retaining nut and cartridge. Always shut off the water first, then open the faucet to release pressure. If you skip this step, you'll soak your cabinet and make the job much harder.

What if the cartridge puller doesn't fit my cartridge?

Make sure you have a puller designed for Moen cartridges—other brands use different thread sizes. If the Moen puller doesn't thread on, the cartridge stem may be damaged. Stop and contact Moen support before proceeding, as forcing the wrong tool can break the stem inside the faucet.

How do I know which direction the cartridge tab should face?

The tab on the new cartridge should align with the notch or slot you see on the faucet body rim. If you're unsure, look at the old cartridge before you remove it—the tab will be pointing toward the notch. Match that orientation with the new cartridge.

Is the 1222 cartridge the same for kitchen and bathroom faucets?

Yes, the 1222 works in both kitchen and bathroom Moen single-handle faucets. However, some faucets use different cartridge numbers like the 1225 or 1255. Always verify your cartridge number before ordering a replacement.

Can I reuse the old trim ring and handle?

Yes. The trim ring and handle are separate from the cartridge and rarely wear out. You only need to replace the cartridge itself unless the handle is cracked or the trim ring is corroded beyond cleaning.