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Change Cistern
G★★★★★
4.6 · 2,000+ Google reviews
4.6 · 2,000+ Google reviews
A cracked, constantly running, leaking or very old toilet cistern is worth replacing, and it is a chance to upgrade to a water-efficient dual-flush model that cuts your water use. Our licensed plumbers assess whether a repair to a worn valve will do or the cistern genuinely needs replacing, and can supply and fit a suitable cistern or complete toilet, connected and tested leak-free. We give honest advice on repair versus replacement, so you spend your money wisely. We change cisterns across Brisbane, Perth and Adelaide, with same-day service where we can and an upfront fixed price.
Why choose Same Day Trades to change your cistern
We are local, licensed and insured plumbers who do this work every day, so we get it right the first time, with no mess and no surprises on the invoice.
- Fully licensed and insured plumbers
- Upfront fixed pricing before we start
- Same-day service where we can, with 24/7 phones
- Workmanship guaranteed and the job left clean
- Servicing Brisbane, Perth and Adelaide
Whatever the job, you get honest advice and a tidy, professional result.
When to change your cistern
The cistern is the tank that holds and releases the water to flush your toilet, and there are good reasons to change one:
- The cistern is cracked and leaking
- It constantly runs and repairs no longer hold
- It leaks from the body or connections
- It is very old with parts hard to source
- You want to upgrade to a water-efficient dual-flush model
- The flush is weak or the mechanism keeps failing
While many cistern problems are repairable, a cracked, failing or very old cistern is worth replacing, and it is a chance to cut your water use with a modern dual-flush unit.
Repair or replace the cistern?
Not every cistern problem needs a new cistern. If the issue is a worn inlet or flush valve, a running toilet, a weak flush, or slow filling, these are repairable parts, and replacing the valve is far cheaper than a new cistern, so a repair is usually the best value. Replacement is the right call when the cistern is cracked (which cannot be reliably repaired), when it is very old and parts are no longer available, or when you want to upgrade to a water-efficient model. We give you an honest assessment: if a valve repair will fix it, we will do that; if the cistern genuinely needs replacing, we will explain why and quote it.
Upgrading to dual-flush
One of the best reasons to change an old cistern is to upgrade to a modern dual-flush model, which offers separate half and full flush buttons and uses far less water than an old single-flush cistern. Older single-flush cisterns can use three times the water of a modern dual-flush per flush, so over a year the saving on your water bill is significant, as well as being better for the environment. If your toilet still has an old high-water single-flush cistern, changing to a dual-flush is a worthwhile upgrade that pays off in lower water bills. We can supply and fit a water-efficient dual-flush cistern or complete toilet to suit.
Changing just the cistern vs the whole toilet
Sometimes we can replace just the cistern and keep the existing pan, and sometimes it makes more sense to replace the whole toilet. Replacing just the cistern works when a compatible, matching cistern is available for your pan, which keeps the cost and work down. However, if your pan is old, cracked, or a style for which a matching cistern is no longer made, or if you want a fresh, modern look, replacing the whole toilet (pan and cistern together) is the better option. We assess your toilet and advise which approach suits, so you get a reliable, water-efficient result without unnecessary cost, whether that is a new cistern or a complete toilet.
The constantly running cistern
A cistern that constantly runs or keeps refilling is both annoying and wasteful, potentially wasting thousands of litres, and while it is often repairable, a cistern that keeps running despite repairs may be due for replacement. The usual cause is a worn flush valve or flapper not sealing, letting water trickle into the bowl, or a faulty inlet valve. We can often fix this by replacing the worn valve. But if the cistern is old, the mechanism is worn out, or repairs no longer hold, changing the cistern (ideally to a modern dual-flush) resolves it for good. We will diagnose whether a valve repair or a cistern change is the better fix for your situation.
Leaking cisterns
A cistern can leak from several points: internally into the bowl (a running toilet), from the connection between the cistern and pan, from the water inlet connection, or from a crack in the cistern body. Connection and valve leaks are usually repairable by replacing seals or valves. A leak from a crack in the cistern, however, means the cistern needs replacing, as cracked ceramic cannot be reliably sealed. We trace the leak to its source and advise accordingly, if it is a seal or valve, we repair it; if the cistern is cracked, we replace it. Either way, we stop the leak and the wasted water, and leave your toilet working properly.
Dual-flush mechanisms
Modern dual-flush cisterns have their own mechanisms, separate half and full flush buttons operating a flush valve, and these can wear or stick over time, causing the toilet to run, flush weakly, or not stop. When changing or repairing a dual-flush cistern, we ensure the mechanism works correctly so both the half and full flush function as they should, giving you the water savings dual-flush is designed for. We carry common dual-flush parts and know the mechanisms across the major brands. Whether you are upgrading to dual-flush or your existing dual-flush cistern is playing up, we can supply, fit or repair the mechanism so it works reliably and saves water.
How much water does a new cistern save?
Changing from an old single-flush cistern to a modern dual-flush one can noticeably cut your water use and bill. Old single-flush cisterns used a large, fixed volume every flush, while a modern dual-flush uses much less, and lets you use an even smaller half-flush when that is all that is needed. Over a year, across a household, that difference adds up to thousands of litres and real savings. On top of the efficiency, a new cistern also stops the waste from a leaking or running old one. So changing an old or faulty cistern often pays for itself over time through lower water bills, as well as giving you a reliable, modern flush.
We supply or fit your cistern
We are flexible about the cistern or toilet itself. We can supply a suitable water-efficient cistern or complete toilet to match your bathroom and pan, or fit one you have already chosen. If you want us to supply it, we will recommend a reliable, water-efficient model that suits your toilet and quote supply and install together as one simple job. Buying a quality cistern or toilet matters for reliability and parts availability down the track. Whichever way you prefer, we fit it correctly, connect the water, and test it leak-free with a proper flush, so you are left with a reliable, water-saving toilet.
Our cistern change process
Changing a cistern is usually a straightforward job. We turn off the water to the toilet, drain and remove the old cistern, fit the new one (checking the connection to the pan and the water inlet), connect it, and test the flush and all the seals for leaks. If we are replacing the whole toilet, we also remove the old pan, fit and seal the new one, and test it. We leave everything clean and working, and take the old unit away. The whole job is typically completed in a single visit, so you have a reliable, water-efficient toilet without a long wait or mess.
How much does it cost?
The cost of changing a cistern depends on whether we are replacing just the cistern or the whole toilet, the model chosen, and whether you supply it or we do. Replacing just the cistern on a sound pan is cheaper than a full toilet replacement. We give you an upfront fixed price before we start, including supply if we are providing the cistern or toilet, so you know the cost. Because a new dual-flush cistern saves water, and stops the waste from a leaking or running old one, the change often pays off over time, as well as giving you a reliable flush.
Same-day plumbing service
Whether your cistern is cracked, constantly running, leaking, or you want to upgrade to a water-efficient dual-flush, we offer fast service and same-day appointments where we can across Brisbane, Perth and Adelaide. We can supply and fit a suitable cistern or complete toilet, or install one you have chosen, connected and tested leak-free. Our phones are answered around the clock. We will advise honestly whether a repair or a change is the better value, give you an upfront price, and leave you with a reliable, water-saving toilet, so you are not putting up with a running, leaking or failing cistern.
Licensed, guaranteed plumbers
Changing a cistern is best done by a licensed plumber who will fit it correctly, connect it properly, and test it leak-free with a good flush, and who can advise honestly on repair versus replacement. Our team is fully licensed and insured, we repair worn valves, change cisterns, upgrade to water-efficient dual-flush models, and replace complete toilets, and we back our work. You get upfront fixed pricing, same-day service where we can, tidy work and a reliable, water-saving toilet. For a plumber near you to change a cistern, we cover Brisbane, Perth and Adelaide.
Change cistern FAQs
When should I replace my toilet cistern?
Replace it when the cistern is cracked, constantly running despite repairs, leaking, or very old, or when you want to upgrade to a water-efficient dual-flush model.
Can you just replace the cistern, not the whole toilet?
Often yes, if a matching cistern is available for your pan. Otherwise replacing the whole toilet may be necessary, and we will advise.
Should I repair or replace the cistern?
If only an internal valve is worn, a repair is usually best value. If the cistern is cracked or very old, replacement makes more sense.
Will a new cistern save water?
Yes. A modern dual-flush cistern uses far less water than an old single-flush one, reducing your water bill.
My cistern keeps running, do I need a new one?
Not necessarily, a constantly running cistern is often a worn flush or inlet valve, which we can replace. If the cistern is cracked or old, replacement may be better.
How much does it cost to change a cistern?
It depends on the cistern and the job. We give you an upfront fixed price before we start.
Can you supply the new cistern?
Yes. We can supply and install a suitable cistern or complete toilet, or fit one you have chosen.
Do you service my area?
Yes, we change cisterns across Brisbane, Perth and Adelaide, with same-day service where we can.
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What our customers say?
Why choose us?
Trusted Tradesmen
With hundreds of 5 star reviews, we’re the local tradesmen you can trust.
Transparent Pricing
We make sure you know exactly what you are paying for ahead of time.
Licensed And Insured
You’re in safe hands as our tradesmen are fully licensed and insured to do your job.
Workmanship Guarantee
Our work will be free of defects in workmanship and workmanship will be warranted for life.
Convenient Bookings
We offer convenient booking times that can be worked around your schedule.
Available All Hours
We take calls 24 hours a day and 365 days a year so that we’re always available to be of service.
Trusted Tradesmen
With hundreds of 5 star reviews, we’re the local tradesmen you can trust.
Transparent Pricing
We make sure you know exactly what you are paying for ahead of time.
Licensed And Insured
You’re in safe hands as our tradesmen are fully licensed and insured to do your job.
Workmanship Guarantee
Our work will be free of defects in workmanship and workmanship will be warranted for life.
Convenient Bookings
We offer convenient booking times that can be worked around your schedule.
Available All Hours
We take calls 24 hours a day and 365 days a year so that we’re always available to be of service.