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Concealed Cisterns

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A concealed cistern is a cistern which is hidden out of sight and only the toilet pan is visible. It can either be hidden within the partition wall or a storage unit.

These kinds of cisterns are very popular today since they are ideal for the minimalist and modern look everyone is after. 

They are also a space efficient alternative compared to the traditional cistern which is perfect for small and compact bathrooms.

TOYO’s cistern collection includes concealed cisterns and you get the option of selecting your parts.

Thing You Need To Consider Before Getting A Concealed Cistern

Sizing and Frame

Before selecting the size of your concealed cistern, you should measure the height and depth of your partition wall.

While installing a concealed cistern is not as difficult as it sounds, there are a few concealed cistern sizing you need to consider.

However even if you don’t have thick wall partitions, you can find slim cisterns to fit into thin ones.

If you are using wall hung or back to wall toilets, you should get a cistern which incorporates a wall mounting frame. This frame should match the dimensions of your partition wall.

It will sit behind the wall and support the toilet pan.


Concealed cisterns have dual flush capabilities which will help you save a lot of water in the long run. 

Today most modern cisterns come with the push button flush and the lever style flush is usually found in older models of concealed cisterns.

Accessibility and Maintenance

While concealed cisterns are not as easy to access as exposed ones, it is not impossible by any means.

Make sure the access panel is in the right location to access your concealed cistern easily.  

It will either be located at the top or front but some concealed cisterns have a dual access feature where you can access it from both the front and top.

Advantages Of Concealed Cisterns


One of the biggest and most obvious advantages of a concealed cistern is that since it is hidden in the wall, it is more pleasing to the eye.

This clean and modern look appeals to a lot of people which is why it is becoming very popular nowadays.

You also see these cisterns featured in popular magazines because of their aesthetic.


Since concealed cisterns are hidden, they do not act as an obstacle in cleaning.

You don’t have to worry about any plumbing on display or your toilet tank becoming a breeding ground for mold.

Since wall hung toilets are widely used with concealed cisterns, cleaning the bathroom floor becomes an easy task as well.

State of the Art Technology

Concealed cisterns use state of the art technology which ensures a smooth operation as well as amazing durability.

You won’t have to worry about replacing your cistern anytime soon.


With these cisterns, users have the freedom to adjust the height of the toilet according to their personal height preferences or requirements.

You can even personalize the location of the flush button which is very useful for people who have limited mobility or other special requirements.

Space Efficiency

Concealed cisterns are extremely space efficient which makes them ideal for small and compact bathrooms.

The cistern and the pipes are hidden  inside the wall which leaves room for other fixtures or anything else you want to install.

Your bathroom will also seem more spacious and less cramped.


Since the cistern is hidden inside the wall, it would result in less flushing noise.

This can be useful when you have to use the bathroom during the middle of the night and you don’t want to wake anyone up.


Having a concealed cistern in your bathroom could potentially raise the value of your home if you decide to sell it in the future.

Accessing A Concealed Cistern

You can access a concealed cistern by following the steps given below.

  • Most concealed cisterns will have an access panel which is at the top, front or behind the flush panel.
  • Once you slide the panel, you will find two flushing rods. Rotate them anticlockwise and pull to remove them. This will release the cistern frame.
  • In order to get to the debris plate you will have to unscrew two bolts and remove the plastic cover.
  • If you want to access the parts of the cisterns, pull the two small levers located at the top.
  • If your cistern has a tiled access panel, it will be sealed with silicone. In this case cut through the silicone joint with a knife. This will release the panel.
  • If your concealed cistern is having problems and you are unsure how to access it, call a professional or someone experienced who can help you with them. Don’t try and attempt anything on your own if you don’t have sufficient knowledge.