How much does it cost to replace a fill valve in a toilet?

Author: Jody Considine  |  Last update: Tuesday, September 2, 2025

Valve Replacements: Valve replacements cost $50–$150 and resolve noisy or slow toilets. The fill valve refills the tank after each flush, the shut-off valve controls water flow, and the flush valve controls water coming from the tank to the bowl.

How much does a plumber charge to change a toilet fill valve?

The national average price for repairs is $60 to $200, with most people paying $125 on average to replace a fill valve on a slow-running toilet. This price fluctuates up or down depending on the amount of work and parts involved.

Do I need a plumber to replace a toilet fill valve?

You may not necessarily need to hire a plumber to replace the components inside your toilet, as many toilet repairs can be done by a handy homeowner with basic tools. Common components that might need replacing include the flapper, fill valve, and flush valve. Here are some considerations:

What is the life expectancy of a toilet fill valve?

Generally, it's a good idea to consider replacing the toilet fill valve every 4 to 5 years.

How often should a toilet fill valve be replaced?

This component maintains the proper balance between water intake and outflow, but like any mechanical part, it can wear out over its 5- to 7-year lifespan.

Toilet Fill Valve Not Shutting Off / Don’t Replace / Fix Fast Cheap & Easy For Beginners

How do I know which toilet fill valve to buy?

Measure a fill valve's height as shown below, from where it mounts to the tank to its top. You'll also want to measure the depth of the tank itself, from the bottom interior. This will help determine the proper size for a universal fill valve, should the original no longer be available.

How long does it take to replace a toilet valve?

Knowing how to replace a toilet tank fill valve isn't hard to learn. Most do-it-yourself homeowners can handle this project in about 60 minutes. All you need is the most basic understanding of how toilets work, a replacement fill valve kit, and the instructions above.

How much does it cost to replace a toilet supply valve?

Valve Replacements: Valve replacements cost $50–$150 and resolve noisy or slow toilets. The fill valve refills the tank after each flush, the shut-off valve controls water flow, and the flush valve controls water coming from the tank to the bowl.

Is it cheaper to fix a toilet or replace it?

Some problems require expensive, complicated repairs. If you encounter these issues frequently, scheduling a replacement will most likely be the most cost-effective solution, as you can save money.

Does any fill valve fit any toilet?

Because toilet fill valves are universal, you do not need to buy one from the manufacturer of your toilet.

What happens if toilet fill valve breaks?

In other cases, a broken fill valve can stop water from running into the tank properly. You might notice that your tank is taking ages to refill. If you are getting too little water in your tank, your toilet might not flush, or it might have a very weak flush.

How much will a plumber charge to change a valve?

The last thing that affects shut-off valve replacement costs is where you want to install the new valve and how easy it will be to reach there. The average cost to replace a water shut-off valve is between $375 and $600.

How much does Home Depot charge for installing a toilet?

The cost of toilet installation at Home Depot can vary depending on several factors such as the type of toilet, location, and any additional services needed. On average, a basic toilet installation by Home Depot can cost between $122 and $240.

Is a toilet fill valve hard to replace?

Luckily, the fill valve can be cheap and easy to replace yourself. All you need to do is turn off the water to the toilet, remove the old valve, and insert the new one.

How do I know if my toilet valve is broken?

Common Signs of a Bad Toilet Fill Valve
  1. Constant Running Water. If you hear your toilet running constantly, even when it hasn't been flushed recently, this is a clear indicator of a fill valve issue. ...
  2. Slow Tank Refill. ...
  3. Weak or Incomplete Flush. ...
  4. Water Level Issues. ...
  5. Water Leakage.

Do toilet fill valves leak?

The fill valve is the part of the toilet that is responsible for refilling the tank after being flushed. Over time, a worn or out of alignment fill valve can become a problem, cause a leak, and wear on valve's components and parts.

How often should toilet shut-off valves be replaced?

When it comes to shut-off valves, there is good news and bad news. The good news is that they can last for 20 to 25 years. The bad news is that if they are not used and exercised every two years (at least), they may freeze in the open position and need replacement.

Should you caulk around a toilet?

Reasons to Caulk Around a Toilet

Moisture Prevention: Without caulk around the toilet base, external water can seep under the toilet, leading to floor and subfloor damage over time. This is especially important in bathrooms with wooden floors, as prolonged exposure to moisture can lead to rot and structural issues.

How long does it take a plumber to change a valve?

A simple replacement valve might take an hour or two, but the job can take several hours to complete if the valve is hard to access.

How much does it cost to replace a toilet flush valve?

To replace the flush and fill valve on a toilet cistern, a plumber would typically charge between £80 and £120. The job should take 1-2 hours to complete.

How do you replace an old toilet fill valve?

  1. Confirm the Problem. The first step is confirming the specific problem with your toilet tank. ...
  2. Identify the Fill Valve. ...
  3. Disconnect the Supply Line. ...
  4. Remove the Old Fill Valve. ...
  5. Insert the New Fill Valve and Connect the Supply Line. ...
  6. Adjust the New Fill Valve and Attach the Refill Tube. ...
  7. Adjust the Water Level.

Do all fill valves fit all toilets?

Are Fill Valves Universal? Given the wide variety of toilets on the market, it's natural to wonder if there are also a variety of fill valves. Fortunately, most of the fill valves that Blue Bear Plumbing, Heating & Air installs are all exactly the same.

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