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Buying the Right Toilet

Buying the Right Toilet

Buying the right toilet

Here are a couple of tips to make buying the right toilet really simple.

Buying the right toilet

Here are a couple of tips to make buying the right toilet really simple.


No toilet manufacturer makes the cistern internals, they all buy them from a third party. There are two notable brands, and we don’t “push” these because that's what we sell, we only sell them because these are the only two brands you want in your house. They are Geberit and R&T.

Geberit is undoubtedly the best in the world, and sold in every country. R&T is arguably as good as Geberit although not quite as prevalent.

Both companies guarantee supply of parts for 25 years, and they are readily available at any quality plumbing supply store, such as Tradelink. All quality toilets will have internals manufactured by one of these companies.

We all know that a toilet that doesn’t flush properly, or won’t stop running, can be very painful. You can buy a cheaper toilet from Bunning’s or Highgrove etc, but is it really worth it? The difference between a good toilet and a crappy toilet (pardon the pun) can be as little as $100, pay once and never have the plumber out!

Both Geberit and R&T have two rubbers that will need replacing over time, both are inexpensive and easy to obtain from Tradelink. There is the inlet rubber and the outlet rubber. It is the same two rubbers for both back to wall toilets and inwall toilets. There are a few more steps to complete when changing or cleaning the rubbers for an inwall system, but both are easy and should take less than 15 minutes. Please follow this link to see how to clean or replace the valves in an inwall Geberit system.

For a back to wall toilet it is as simple as taking off the lid and twisting out the centre to replace the outlet valve, the inlet valve is also easy to see and to get to.

Buying a quality toilet can mean that, after installation, you will never have to call a plumber out to service your toilet. This will save you hundreds on call out fees alone.

"Buying a quality toilet can mean that, after installation, you will never have to call a plumber out to service your toilet."


Apart from quality there is one other very important thing to know about buying the right toilet, that is the offset. The offset is the distance from the centre of the outlet hole in the floor back to the wall.

The offset is usually around 150mm but can vary. Back to wall toilets generally have an offset of between 80-180mm with the pan connector that comes with the toilet. Optional pan connector bends are available for floor outlet ranges for offset of 180-280mm. You will need to check the specs for each toilet.

You may get a pan connector that will go out to 280mm but the toilet pan you have selected will only go as far as 250mm.

For example
Donna Wall Faced Toilet Suite - Extra Height
S-trap: 80-180mm (supplied)
Optional pan connection bend available for floor outlet range 180-250mm (ordered separately)

Vera Rimless Wall Faced Toilet Suite
S-trap: 80-180mm (supplied)
Optional pan connection bend available for floor outlet range 180-280mm (ordered separately)

Both toilets use the same optional bend (see it here).

Again, check the specs. Making sure you have the right bend for your installation means no delays.

Rear Inlet or Bottom Inlet

All back to wall toilets will have the options of rear inlet or bottom left or right inlet. The water inlet is the water supply that fills the cistern to enable flushing of the toilet.

The most prevalent in homes at present is the bottom left or right inlet. You will see a hose on either the left or right of your toilet that runs from the wall into the side of the toilet that will have a stop valve enabling you to turn the water off. While this works just as well as a rear inlet the hose and valve are visible and are just one more dust collector and a bit of an eyesore..

The alternative is the rear inlet. This is when the water inlet enters through the back of the cistern with the stop valve placed under the cistern lid. The hose and stop valve are not visible yet they are easily accessible giving a cleaner line and less clutter in your bathroom.

Keeping in mind that the stop valve needs to be accessible, when you are replacing a closed coupled toilet with a back to wall toilet, you will find that the stop valve will need to be moved either left or right to have it fully exposed. You may as well move it up under the lid so you never have to look at it or clean around it again.

Considering that all the required work to move the valve will be hidden behind the toilet, it is a pet hate of mine when plumbers replace your toilet and leave this hose visible.

The position of the inlet hose is critical for both rear and bottom inlet. Whichever option you choose, the position of the outlet in the wall must be in the right spot for hassle free installation of your toilet. As an example, look at the Vienna Comfort height back to wall toilet suite. At the bottom of the page you will find the spec sheet which shows the drawings of the pan and cistern.

You will notice that the rear inlet specs show that the water inlet should be centred 809mm from the finished floor and 72mm from the centre of the toilet.

Alternatively, the bottom inlet should be located near to the hole in the side of the pan. The distance out from the centre of the pan is critical as you don't want the outlet being right where the pan goes back against the wall. This pan is 360mm wide which means it is 180mm to the edge of the pan and you will still need to fit the stop valve so that you can easily shut the water off if needed. So the optimal placement for the bottom inlet would be 220mm from the centre of the toilet with a height of approx 300mm. The height is not critical but should be around the same height as the hole in the side of your toilet pan.

We hope that this has made things easier for you to discuss your options with your plumber and select the right toilet first time.

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