1693225811Why Moen Shower Faucet Wont Turn Off

Why Moen Shower Faucet Won’t Turn Off


Have you ever experienced the frustrating situation where your Moen shower faucet simply won’t turn off? You twist and turn the handle, but the water keeps flowing. It can be incredibly inconvenient and can lead to wasted water and potentially higher utility bills. In this article, we will explore the common reasons why Moen shower faucets may fail to turn off and provide practical solutions to fix the issue.

Understanding Moen Shower Faucets

Before we delve into the reasons behind the malfunctioning of Moen shower faucets, it is essential to understand how they work. Moen shower faucets are designed with a single handle that controls both the water temperature and flow rate. These faucets are known for their reliability and durability, but like any other mechanical device, they can develop problems over time.

Common Reasons for Moen Shower Faucets Not Turning Off

1. Worn Out Cartridge

One of the most common reasons why Moen shower faucets fail to turn off is a worn-out cartridge. The cartridge is a crucial component that regulates the water flow. Over time, the cartridge can become worn due to regular use, mineral deposits, or other factors. When this happens, it may not create a proper seal, leading to water continuously flowing, even when the handle is turned off.

Solution: To fix this issue, you will need to replace the cartridge. Start by turning off the water supply to the shower. Then, remove the handle and the trim plate to access the cartridge. Carefully remove the old cartridge and replace it with a new one. Reassemble the faucet, turn on the water supply, and test to ensure the problem is resolved.

2. Loose Handle or Loose Valve

Sometimes, a loose handle or valve can prevent the Moen shower faucet from turning off completely. If the handle is loose, it may not engage properly with the cartridge, preventing it from shutting off the water flow.

Solution: To fix this issue, start by turning off the water supply. Remove the handle and inspect the valve underneath. If the valve is loose, tighten it using an adjustable wrench. Make sure the handle is also securely attached to the valve. Reassemble the faucet and check if the problem persists.

3. Faulty Valve

In some cases, the problem may lie with a faulty valve. If the valve is damaged or has worn out over time, it may not function correctly, leading to difficulties in turning off the faucet.

Solution: Unfortunately, if the valve is faulty, it will need to be replaced. This is a more complex repair and may require the assistance of a professional plumber. Contact Moen’s customer service or consult a licensed plumber to ensure the correct replacement valve is chosen and installed.

4. Sediment or Mineral Build-Up

Over time, sediment and mineral deposits can accumulate inside the cartridge or other internal components of the faucet, affecting its proper functioning. This build-up can cause the faucet to stick, preventing it from turning off completely.

Solution: To resolve this issue, start by turning off the water supply. Remove the handle, trim plate, and cartridge. Inspect these components for any sediment or mineral build-up. Clean them thoroughly using a mixture of vinegar and water or a commercial cleaning solution. Reassemble the faucet and test to see if the problem persists. Regularly cleaning your Moen shower faucet can help prevent sediment and mineral build-up and prolong its lifespan.


A Moen shower faucet that won’t turn off can be a frustrating problem to deal with. However, understanding the common causes behind this issue and knowing the appropriate solutions can help you resolve the problem effectively. Whether it’s a worn-out cartridge, loose handle, faulty valve, or sediment build-up, there are steps you can take to fix the problem and restore your faucet’s functionality. By following the tips provided in this article, you can ensure that your Moen shower faucet operates smoothly for years to come.


1. Why won’t my Moen shower faucet turn off?
2. How can I fix a Moen shower faucet that won’t turn off?
3. What could be causing my Moen shower faucet to stay on?
4. Can a faulty cartridge cause a Moen shower faucet to not turn off?
5. Is it possible for a worn-out handle to be the reason my Moen shower faucet won’t turn off?


1. There could be various reasons why your Moen shower faucet won’t turn off, including a faulty cartridge, worn-out handle, or a problem with the water pressure balancing valve.
2. To fix a Moen shower faucet that won’t turn off, you can start by checking the cartridge for any signs of damage or debris. If necessary, you may need to replace the cartridge or the entire faucet assembly.
3. Several factors could cause a Moen shower faucet to stay on, such as a malfunctioning cartridge that fails to control water flow or a problem with the valve that regulates water pressure.
4. Yes, a faulty cartridge can prevent a Moen shower faucet from turning off. If the cartridge becomes damaged or worn-out, it may not properly shut off the water flow, leading to a continuously running faucet.
5. A worn-out handle can indeed be a reason why your Moen shower faucet won’t turn off. If the handle is loose, stripped, or damaged, it may not engage properly with the cartridge or valve, preventing you from fully closing the faucet.

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Natasha is the owner of Smart Home Bath, a company that specializes in providing innovative and convenient home automation solutions. With a background in electrical engineering and a passion for making life easier through technology,

Natasha founded Smart Home Bath to help homeowners upgrade their living spaces and improve their daily routines.

Over the years, Natasha has become an expert in the field of smart home technology, and her company has grown to be a trusted source of high-quality products and expert installation services.

Whether you're looking to add voice-controlled lighting, automated temperature control, or any other smart home feature, Natasha and her team at Smart Home Bath have the knowledge and expertise to help you get the most out of your home automation system.

So, if you want to make your home smarter, Natasha and Smart Home Bath are the perfect people to turn to.

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