Same day repair of a hot water relief valve leaking

hot water relief valve leaking

Stopping a constantly running TPR valve. A simple water heater repair.

We were recently contacted by a customer in Bankstown, in Western Sydney, who noticed water leaking from their hot water system. At first, they thought it was something serious, but after a closer look, we identified the problem — a faulty TPR (Temperature and Pressure Relief) valve.

The good news is that a leaking relief valve is usually a straightforward and affordable repair, and our team had the customer’s system back in safe working order in no time.

What is a TPR valuve? Why is it important?

The Temperature and Pressure Relief (TPR) valve is a critical safety feature on every hot water storage tank. Its job is to release excess pressure or temperature that builds up inside the tank.

Without this safeguard, pressure could rise to dangerous levels, potentially causing the tank to rupture or, in extreme cases, explode. In short, the TPR valve is the last line of defence that keeps your hot water system (and your household) safe.

What happens if the TPR valve fails?

A constantly running TPR valve, like the one we repaired in Bankstown, isn’t just inconvenient; it’s a warning sign that something is wrong. Common causes include:

  • Excessive water pressure in the system.
  • Overheating caused by a thermostat fault or system malfunction.
  • A faulty or worn valve that can no longer seal properly.

If left unattended, a failed relief valve can lead to:

  • Significant water wastage and higher energy bills.
  • Reduced energy efficiency as the system works harder to maintain hot water.
  • Potential safety hazards from unchecked pressure or heat.

This is why it’s important to call a professional as soon as you notice water constantly flowing from the valve.

Repairing the leaking relief valve

In this case, the customer’s TPR valve was allowing hot water to escape continuously. We inspected the system, confirmed the fault, and replaced the valve on the spot.  Our vans are fitted with thousands of replacement water heater spare parts so we’re typically able to complete the job on the spot.  Once fitted and tested, the tank was back to operating safely, with no more wasted water or energy.  The customer was back enjoying trouble free hot water in no time.

DIY maintenance to keep your hot water system is running efficiently

Every day, your water heater works hard behind the scenes, quietly delivering reliable hot water when you need it. Until something goes wrong!

With quick regular checks and maintenance every few months, you can keep your water heater running efficiently and avoid unexpected (and often costly) breakdowns.

1. Check for leaks

Inspect the tank, pipes, and valves monthly for any signs of water leaks, rust, or corrosion. Early detection can prevent bigger issues.

2. Test the pressure relief valve

Carefully lift the valve lever and ensure it releases water for about 10 seconds. The lever should move freely—replace the valve if it’s stuck or unresponsive.

3. Monitor water temperature

Regularly check the hot water at your taps. If it feels cooler than usual or runs out quickly, it may indicate a problem that needs attention.

4. Watch for ants

Inspect the area around the base of your hot water system—ants often nest there during colder months and can interfere with electrical components.

5. Clear weeds and debris

Keep the base of your water heater free from weeds, grass, and soil buildup. This prevents moisture retention and reduces the risk of rust and corrosion at the bottom of the tank.

Is your water heater leaking? 

If you notice water constantly running from your hot water system’s relief valve, don’t ignore it. While the repair is often quick and inexpensive, leaving the issue unresolved can cause much bigger — and more expensive — problems down the track.

For fast, professional hot water repairs, contact our team today. We’ll get your system running safely and efficiently again.