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How To Replace A Toilet Cistern In 7 Simple Steps

How to replace a toilet cistern in 7 simple steps

Replacing your toilet cistern doesn’t have to be a daunting task – it can be completed in just seven simple steps! Plus, by following these instructions you can avoid any nasty surprises (like flooding your bathroom!) later on. With the right hot water system, you can work in the operating hours and get the maximum out of it.

So whether your current cistern is leaking or just needs replacing for a new look, read on for all the info you need to get the job done quickly and easily. Happy DIY-ing!

What is a toilet cistern?

A toilet cistern is a reservoir that stores water for flushing a toilet. The water is usually supplied by the municipality, although some cisterns may be filled with rainwater or groundwater.

When the flush handle is activated, a valve opens and allows water to flow into the bowl, where it quickly mixes with waste and begins the flushing process.

Cisterns are typically made of ceramic or plastic, and they come in a variety of shapes and sizes. Some models have a float-operated valve that controls the water level, while others have a manual shut-off valve that must be turned on and off as needed. Regardless of the type of cistern, they all play an important role in ensuring that toilets can be flushed effectively.

Most people know that a toilet cistern is a container that stores water for flushing, but few know much beyond that. In fact, the cistern is a crucial part of the toilet, and its design can have a major impact on both performance and water usage.

The two most common types of cisterns are gravity-fed and pressure-assisted. Gravity-fed cisterns rely on gravity to refill the tank after each flush, while pressure-assisted cisterns use air pressure to force water into the tank.

Both types of cisterns have their advantages and disadvantages, so it’s important to choose the right one for your needs. A well-designed cistern can save water and reduce clogs, making it an essential part of any efficient toilet. Also, use a phantom flush with a cone gasket to make the flush happen appropriately.

Can you replace a toilet cistern yourself?

If you are comfortable working with tools and have some basic plumbing knowledge, then you should be able to replace a toilet cistern fairly easily. However, if you are not confident in your ability to do the job yourself, it is always best to call a professional.

In addition, some newer toilet models can be quite difficult to work with, so it is important to make sure that you have the right replacement cistern for your toilet. With these things in mind, replacing a toilet cistern is generally a straightforward task that most people can do without too much trouble.

At some point, every homeowner will need to replace a toilet cistern. Whether it’s due to a leak or simply because the old one is worn out, replacement cisterns are not difficult to install. In fact, with a few simple tools and a little bit of know-how, you can replace a toilet cistern yourself in just a few minutes.

The first step is to turn off the water supply and flush the toilet to empty the tank. Next, remove the old cistern by undoing the bolts that secure it to the bowl. Then, clean up any residue left behind by the old cistern and install the new one in its place.

Finally, turn on the water supply and test the new cistern to make sure it is working properly. With just a little bit of effort, you can easily replace a toilet cistern yourself.

DIY method for replacing the entire cistern

Most people use their toilet several times a day without giving much thought to how it works. But at some point, every toilet will need a little maintenance – and that includes changing the cistern. Thankfully, it’s a relatively easy task that anyone can do with a few basic tools. Here’s a step-by-step guide to changing a toilet cistern.

  1. Start by turning off the water supply to the toilet. This is usually located behind the toilet or under the sink.
  2. Flush the toilet to empty the cistern. Then use a sponge or cloth to remove any remaining water from the cistern.
  3. Disconnect the supply line from the bottom of the cistern. There may be a clamp that needs to be released, or you may need to unscrew the line from the valve.
  4. Remove the old cistern from the bowl. If it’s attached with screws, remove them and lift off the cistern. If it’s glued in place, you may need to use a putty knife to loosen it before you can lift it away.
  5. Clean up any old sealant or putty from around the hole where the cistern was attached.

7 simple steps for replacing toilet cistern components?

Do you find the replacement toilet cistern daunting? With the right plumbing services, you can make it an efficient option. Let’s discuss the inlet pipe construction in detail:

  1. Shut off the water to your toilet bowl by turning the knob or handle clockwise until it stops. Flush the toilet to empty out the tank and bowl.
  2. Remove the lid from the back of the toilet tank and set it aside. Use a sponge or cloth to clean around the inside of the tank to remove any dirt or debris.
  3. Locate the screws that secure the flush valve assembly to the tank and remove them with a screwdriver. Lift out the old flush valve assembly and set it aside. Use the attachment hole with a refill tube effectively.
  4. Install the new flush valve assembly into the tank, lining up the holes with the screws. Secure it in place with the screws, tightening them until they are snug.
  5. Reattach the supply line to the new flush valve assembly. Turn on the water supply line to the toilet and check for leaks.
  1. Put the lid back on the toilet tank and give the handle a few test flushes to make sure everything is working properly. Stop tap with the mains with a plumber’s tape.
  2. Discard the old parts in the garbage or recycling bin.

Checkout our other blog on, which hot water system is best? Gas vs Electric  


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