Water pressure problems are easy to overlook. They tend to develop gradually or present as symptoms that get attributed to other causes: a dripping tap, a toilet that keeps running, or a showerhead that just doesn’t seem as powerful as it used to be. Knowing when to book a plumber Sydney for a water pressure check can save you from expensive plumbing repairs down the track. All Day Plumbing carries out pressure assessments for Sydney homeowners every day, and in most cases the cause is identified and resolved in a single visit.
What a Professional Water Pressure Check Involves
A professional water pressure check Sydney is not just attaching a gauge to a tap. A licensed plumber will test pressure at multiple points across your property, including at the meter, at the inlet to the hot water system, and at representative taps throughout the home. This multi-point approach identifies not just the pressure level but where in the system any restriction or excess pressure is occurring. The plumber will also inspect the condition and setting of your pressure limiting valve, check for signs of pipe deterioration or scaling, and assess whether any recent changes to the property or supply network may be contributing to the issue.
Signs You Should Book a Water Pressure Check
Your Showers or Taps Have Progressively Weakened
If water pressure at your showerhead or taps has been gradually declining over months, this is a clear signal that something is changing in your plumbing system. Gradual pressure loss is commonly caused by scale buildup inside older galvanised pipes, a slowly failing pressure limiting valve, or sediment accumulation in an ageing water meter. A pressure check will identify whether the restriction is in the mains supply, at the meter, at the PLV, or in your internal pipework.
You’re Replacing Tap Washers More Frequently Than Normal
Tap washers in a well-maintained home should last several years. If you are replacing them every six to twelve months across multiple taps, high water pressure is a likely culprit. Excessive pressure hammers tap seats and washers every time a tap is opened or closed, accelerating wear. A pressure check will confirm whether this is the cause and whether a PLV is needed to protect your taps and fittings.
Your Toilet Keeps Running or Refilling Slowly
A toilet that keeps running after flushing, or one that takes an unusually long time to refill, can both be pressure-related. High pressure causes toilet fill valves and inlet diaphragms to fail or not seat correctly, resulting in continuous running. Low pressure causes the cistern to refill very slowly. A pressure check alongside a toilet inspection will determine whether the issue is the valve itself or the pressure at which it is operating.
You Can Hear Water Hammer
Water hammer is the banging or shuddering noise that pipes make when taps are turned off quickly or when an appliance solenoid closes. It occurs when the kinetic energy of fast-moving water is suddenly arrested. High water pressure significantly worsens water hammer because the water is moving faster and carrying more energy. Persistent water hammer causes pipe brackets to loosen, joins to stress, and fittings to fail over time. If your pipes are banging regularly, a pressure check is the right starting point.
You’ve Had a Flexible Hose Burst or a Hose Leak
Flexible braided hoses connect taps, toilets, and appliances to the water supply. They are rated to a maximum working pressure and a maximum service life. High water pressure dramatically reduces the effective service life of these hoses and increases the risk of a sudden burst, which can discharge large volumes of water into a cabinet or onto a floor within minutes. If you have experienced a hose failure, high pressure may be why it failed early. After replacing the hose, book a pressure check to protect the others. Read our post on 7 plumbing emergencies that cannot wait to understand the damage a burst hose can cause.
You’re Moving Into a New Property
One of the best times to book a water pressure check is when you move into a new home. You won’t know the history of the plumbing system, whether a PLV has ever been installed, or what the mains pressure is in that street. A pre-occupancy pressure check gives you a baseline and flags any issues before they become your problem. It also helps you understand what maintenance the plumbing may need over the coming years. Pair it with a water meter installation Sydney review to confirm the meter is in good condition and sized correctly for the property.
After a Renovation or Addition
Adding a new bathroom, a granny flat, a pool, or a significant irrigation system increases demand on your water supply. A pressure check after the addition confirms that the existing system can handle the new demand without compromising pressure to existing fixtures. If the demand has increased significantly, the PLV setting or the water meter size may need to be reviewed.
Your Hot Water System TPR Valve Is Discharging
The temperature and pressure relief (TPR) valve on your hot water system is designed to discharge water if the pressure or temperature inside the system exceeds safe limits. Occasional discharge is normal. Frequent or continuous discharge, particularly from the cold water side, often signals thermal expansion pressure caused by high supply pressure combined with a closed system configuration. A pressure check will determine whether the cause is supply pressure, thermal expansion, or a faulty TPR valve.
Related Reading
- How to Shut Off Your Water During a Plumbing Emergency
- 7 Plumbing Emergencies That Cannot Wait
- Expert Guide to NSW Water Efficiency Certificates
Book a Water Pressure Check With All Day Plumbing
All Day Plumbing carries out water pressure checks across Sydney for residential and commercial properties. We test, diagnose, and fix pressure problems in a single visit where possible. Call us now on 1300 071 280.