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How to Replace a Faucet Cartridge in 8 Easy Steps

A modern cartridge faucet for a bathroom sink

Most people understand the mechanics of a simple compression faucet and know what to do when something goes wrong. Leaky faucet? Replace the washer!

A cartridge faucet is more of a mystery, but the good news is that replacing a cartridge is a straightforward repair that can save you time and money.

Let us walk you through the steps.

How Does a Faucet Cartridge Work?

A faucet cartridge acts like a valve, allowing water to pass through when it’s open and stopping the flow when it’s closed. Different types of faucets use different cartridges, but the principle remains the same.

  • A cartridge regulates water flow and temperature.
  • Single-handle and double-handle faucets have different cartridge designs.
  • It’s usually made from plastic, brass, or ceramic for durability.

Signs of a Faulty Cartridge

A high-quality cartridge made from durable materials like brass or ceramic can last anywhere from 5 to over 10 years. However, mineral deposits from hard water can shorten its lifespan.

Symptoms of a failing cartridge include:

  • Water dripping from the spout even when the faucet is turned off.
  • Difficulty moving the handle.
  • Difficulty adjusting water temperature or flow.
  • Uneven water pressure.

Replacing a Faucet Cartridge Step-by-Step

Step 1: Gather Your Tools & Supplies

  • Adjustable wrench
  • Screwdriver (Phillips and flat-head)
  • Allen wrench
  • Utility knife
  • Replacement cartridge
  • Plumber’s grease
  • Towel or rag

Step 2: Turn Off Water Supply

Locate the shut-off valves under the sink and turn them clockwise to stop the water flow. This prevents accidental spills while you work.

Step 3: Remove Faucet Handle

  • Use an Allen wrench or screwdriver to remove the screw holding the handle in place.
  • Gently pull the handle off to reveal the cartridge.

Step 4: Remove the Retaining Clip

  • Use pliers to remove the retaining clip or nut holding the cartridge. Be careful not to damage any parts.

Step 5: Extract the Old Cartridge

  • Use your pliers to pull the old cartridge straight out. If it’s stuck, wiggle it gently until it loosens.
  • Inspect the cartridge and faucet body for any debris or build-up and clean it if it can be salvaged.

Step 6: Install the New Cartridge

  • Apply plumber’s grease to the O-rings on the new cartridge.
  • Insert the new cartridge into the faucet body, ensuring it aligns correctly.
  • Replace the retaining clip or nut.

Step 7: Reassemble the Faucet

  • Reattach the handle and secure it with the screw.
  • Turn the water supply back on and check for leaks.

Step 8: Test the Faucet

  • Turn the faucet on and off, checking for smooth operation and a watertight seal.

Maintaining Your New Cartridge

To prolong the life of your new cartridge, follow these simple maintenance tips:

  • Clean mineral deposits regularly with a vinegar solution.
  • Use a water softener to prevent build-up.
  • Inspect and replace worn parts as needed.

FAQs: Replacing a Faucet Cartridge

Q: How often should I replace my faucet cartridge?

Typically, a faucet cartridge lasts between 5 and 10 years, depending on use and water quality.

Q: Can I use any cartridge for my faucet?

No, cartridges are specific to the brand and model of your faucet. Purchase a compatible replacement.

Q: How much does a faucet cartridge cost?

A faucet cartridge can cost anywhere from $10 to $50, depending on the brand and model. Research and compare prices before making a purchase.

Q: What if my faucet still leaks after replacing the cartridge?

There might be an issue with the O-rings or seals. Inspect these components and replace them if necessary.

Q: How much time does it take to replace a faucet cartridge?

It typically takes 30 minutes to an hour, but the exact time can vary depending on your experience level and the type of faucet.

Q: Can I replace a faucet cartridge myself, or should I hire a professional?

With the right tools and instructions, most homeowners can replace a faucet cartridge. Follow the steps outlined in this guide, and you’ll save on labor costs.

Q: Do all faucet cartridges require plumber’s grease during installation?

While it’s not mandatory for all cartridges, applying plumber’s grease to the O-rings can make the installation smoother and help prevent future leaks. It’s a recommended step for optimal performance.

Q: What should I do if the cartridge is stuck and won’t come out?

If the cartridge is stuck, apply a few drops of penetrating oil and let it sit for a few minutes. Gently wiggle the cartridge with pliers to loosen it. If it remains stuck, invest in a cartridge puller, a valuable tool for your plumbing toolkit.

Q: Is it necessary to turn off the main water supply if I can’t find the local shut-off valves?

Ideally, you should use the local shut-off valves under the sink. However, if you can’t locate them, you may need to turn off the main water supply to your home to prevent water flow while working.

Q: Are there any precautions I should take when cleaning mineral deposits?

Use a mild vinegar solution and avoid abrasive scrubbers. Harsh chemicals or abrasive materials can damage the faucet’s finish and internal components.

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