What’s that hammering noise?

Why do I hear a hammering noise coming from my pipes? Is this a common plumbing issue and how can Doherty Plumbing Solutions help?

Emergency plumbing Glen Waverley

An anxious customer from Glen Waverley reached out to us, suspecting a fault in their hot water plumbing connection. They had heard strange noises coming from the pipework when the hot water taps were turned off in their laundry, bathroom and powder room.

Doherty Plumbing Solutions’ licensed plumbing professional George was at the scene to resolve the problem.

After an inspection, George detected the cause of the noise was water hammer occurring inside the connection.

He looked into the Aquamax gas storage heater unit outside the building and located the faulty duo valve that was quite old. After isolating the water supply, George replaced the old valve and re-connected the supply line directly to hot water outlet. Then, the plumbing fixtures inside the house were all tested. The situation was much improved!

Well done, George.

What is ‘water hammer’ effect?

Water hammer, or hydraulic shock, involves a sudden shock experienced by the water flow inside a pipeline, after it has encountered a blockage (such as a shut-off valve). Once the flowing water hits this block, the water molecules’ tendency is to retrace their flow in the opposite direction, when they collide with the incoming molecules. This sudden change in direction of the water creates a huge pressure surge moving pipes, causing a banging sound.

How can high water pressure damage pipes?

The increased pressure build-up due to a water hammer effect can not only damage pipelines, but also cause cracks that lead to water leaks. They can even harm the various valve systems in the plumbing connections, snowballing into additional effects on connected appliances. For example, it can blow off the diaphragm in pressure tanks resulting in irregular water flow, or affect water meters.

How to tackle the water hammer issue?

It is crucial to maintain the pipelines regularly with the help of professional services, such as Doherty Plumbing Solutions. Undertaking checks of the pipework, ensuring there are no blockages, and fitting pipes in correct alignment, are important first steps that can help in the long run.

Additional measures could also include the following:

  • Fitting valves that close slowly to prevent sudden blockage.
  • Ensuring pipelines have built-in provisions for air chambers, which act as shock absorbers to reduce the effects of accumulating pressure.

Who can help with water hammer issues?

Don’t let a water hammer issue cause extensive damage to the plumbing connections and fixtures. Act fast, TODAY!

At Doherty Plumbing Solutions, we are here to help you tackle the bang and prevent a potential disaster in your home or business.

Contact our team at:

24/7 | Request a Call Back

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    I had a great experience with the team at DP when they promptly addressed my hot water piping issue. George worked efficiently, and he was friendly and professional throughout the visit. He did a thorough job and took the time to ensure everything was done correctly. I would definitely recommend their services and would not hesitate to call them again.
    Susan Lim Avatar
    Susan Lim
    12/16/2025
    The team at Doherty Plumbing provided exceptional services at very short notice to fix my hot water system. Their quote was very fair and honest quote where other plumbers were charging extortionate amounts for the same problem. They were able to fix the issue within the day and communicated very well. I highly recommend their services.
    Laura Avatar
    Laura
    11/06/2025
    Super quick diagnosis and service from the crew at Doherty’s Plumbing. The plumber who attended was really friendly and helpful. Highly recommend 😉
    Peggy Couper-Woods Avatar
    Peggy Couper-Woods
    10/21/2025
    Responsive, reasonably priced and pleasant to deal with. Have used several times in the past and will continue to do so.
    Fiona Walliss Avatar
    Fiona Walliss
    9/13/2024
    Doherty Plumbing have been our plumbers at Paris Financial for many years. They are reliable, respective of our team and reasonably priced. I highly recommend them
    Patrick Mannix Avatar
    Patrick Mannix
    9/30/2025
    The first gentleman I arranged the appointment with at Doherty Plumbing was most helpful & the attending plumber was a lovely, polite young man who arrived promptly, worked efficiently & completed the job well. Greatly appreciated.
    Denise Dixon Avatar
    Denise Dixon
    10/27/2025
    Doherty plumbing work was excellent. Very responsive, arrived on time and fixed the issue quickly. Brian and his crew kept me informed at every step and I could not be happier with the end result.
    Anne-Marie Cook Avatar
    Anne-Marie Cook
    1/13/2025
    I rang them early morning & they arrived on the same day. They found the leak which was under the house, fixed it promptly. The plumber was helpful & friendly, communicated well. I'll use them again.
    Elizabeth Avatar
    Elizabeth
    8/13/2024
    Of the many plumbing services they offer, this is the second time I've engaged them for different types of work. James has been very helpful and efficient in scheduling a time for a roof leak repair. Very pleased that the work was completed promptly. Trust that they have addressed the issues at hand.
    tjokro aminoto Avatar
    tjokro aminoto
    12/13/2024
    Once again it was a pleasure dealing with Doherty. Thank you to Brian for promptly organising the visit and thank you to Tim for arriving on time and clearing the blockage. Highly recommend their services.
    Sue Smith Avatar
    Sue Smith
    10/02/2025
    For reliable plumbing services, call 03 9877 5775 or 0417 577 432