No Call Out Charge

Free Estimates

Multiple Payment Options

Trained Professionals

Satisfaction Guaranteed

Fast and Friendly Service


Southampton Toilet Cistern Replacement Experts

Toilet cisterns work by drawing water into a tank and draining it into the toilet bowl when you flush. They can go years without showing damage but cause a total mess when they breakdown. This is because cisterns get worn out gradually after years of use. We at No1PHD offer professional cistern replacement services to ensure that your toilet is in good condition even after years of use.

When your cistern needs replacement

Most homeowners do not detect damaged toilet systems until they become a crisis. However, there are telltale signs of a dysfunctional cistern that you need to look out for. Check if the toilet continues to run hours after somebody has flushed it. It is likely that the flush valve has malfunctioned and needs replacement. Another sign is a stubborn cistern that won’t flush because the fill valve is broken and there is no water in the tank.

And if there is a leak, you will notice water puddles or flooding on the floor. Leaks are often caused by worn out washers and rubber joints and faulty valves. At other times, the bowl cover and cistern tank lid may become rigid or even snap if they become old and the nuts and bolts have rusted. Finally, the toilet cistern handle is prone to damage due to constant use. If you experience any of these problems, you should call No1PHD professional plumbing servicing Southampton properties. We service both residential and commercial premises and we offer an instant callout to inspect the cistern and determine if it needs replacement.

Trustpilot Starred Logo

Absolutely blown away by the service we received. Took all the stress out of losing our heating and hot water. Highly recommended!

5 star review

blue quotation marks
Ellipse 1
Mr Wells

2 weeks ago

Couldn’t have asked for a faster resolution to our drainage conundrum. Nothing was too much for these guys who were brilliant throughout.

blue quotation marks
Ellipse 1
Miss Carey

1 month ago

Hire plumbing Professionals

If the cistern needs replacement, hire No1PHD to complete the job because trying to do it yourself can lead to breakages, burst pipes, and messy clogging of your toilet. Our Southampton plumbers will check the condition of your toilet cistern and determine all the parts that need replacing including worn out O-rings and rubber joints, and damaged pipes.

After replacing the worn out parts, they then install the new cistern and ensure that the toilet is functioning properly without leaks or blockages. They then mark and cut the covers expertly to ensure that everything fits properly. Finally, they install the toilet seat leaving you with a sparkling new toilet cistern.

Select the right cistern for your toilet

No1PHD understands that not all toilets are the same and will help you select a cistern that fits the toilet design and suits your bathroom decor. We will come and inspect the toilet checking for damages, toilet size, and overall design of the toilet. We then go through our catalogue that consists of nearly all the major manufacturers to select a design that fits your needs.

We recommend only the best brands that have a proven track record of sleek designs, high quality, and long life. Our staff understands all the plumbing regulations applicable in Southampton and will install a cistern that conforms to your area code. Our plumbers have experience installing all types of cisterns including:

  • Plunger ballcocks
  • Diaphragm ballcocks
  • Float cup fill valves
  • Float cup fill valves
  • Floatless fill valves

Why No1PHD?

No1PHD is a reputable company that offers a range of plumbing services in Southampton including unclogging blocked sinks, toilets, and pipes and plumbing installations. Our staff has extensive experience in all types of plumbing works in Southampton and can easily locate your home for emergency repairs. All our staff has practice licenses and understand the plumbing standards for different types of properties, both residential and commercial.

Contact us on 01425 208031 for further consultations on the type of cistern replacement service you need. Or email us at, for instant response.

24 hour callout

emergency service


5 stars
white quotation marks

After noticing that the house was unusually cold, we found that the heating wasn’t coming on and that our hot water had also failed. We called the team at No 1 PHD who dispatched an engineer to investigate. After discovering that the culprit was a faulty boiler part, they ordered in a new part and got it fitted as quickly as possible. The guys were great, and we couldn’t be happier.

Mr Lincoln

5 stars
white quotation marks

For days, we’ve noticed a foul smell coming from outside and a gurgling sound coming from one of the drains. Whenever it would rain, the area around it would flood slightly and take ages to drain. We tried buying drain unblockers, but none seemed effective. Eventually, we turned to No 1 PHD and were left wondering why we didn’t do this sooner.

Mrs Griffin

Got a problem?

map marker