How do I know if I have a gas leak?

Gas Plumbing Chadstone

A customer in Chadstone reported a gas leak in their DUX hot water unit. Our licensed gas plumbers attended the call fast.

The Doherty Plumbing Solutions team investigated the unit and found the gas cock supply to the hot water unit was leaking, due to a loose compression nut. The existing compression nut was tightened, and soapy water test carried out around the appliance’s connections. Everything was found back to working order.

Everything was tested, and all was ok! The heater was now functioning perfectly relying on a gas booster unit.

How do you know if there is a gas leak?

A potential gas leak is not always easy to detect – it may not make a sound or is easily smelt/seen. Moreover, there could be a danger of Carbon Monoxide poisoning.

So, having a professional gas plumber inspect all gas appliances and pipelines regularly will ensure their safety and efficiency. Where required, they may also advise you on long-term fixes and the correct upgrades.

Observing these tell-tale signs might mean calling a licensed gas plumber for renewal/repair of your gas units and connections in Melbourne.

  • Physical manifestations
    A gas leak can be deceiving. A rotten egg-like stench in your property, and residents suffering from flu-like symptoms, including headache, nausea, muscle pain and weakness, shortness of breath, dizziness or chest pain, could indicate a potential gas spillage.
  • Gas output
    Erratic gas output, and when appliances start burning a yellow flame, could be signs of a problem in the supply line. A safely burning gas flame is bluish yellow in colour.
  • Hissing noise
    A hissing sound from a point in the gas connection or a gas appliance means there might be a leak. This requires an immediate fix, with the help of an expert gas plumber.
  • Unusual gas bills
    If you suspect the monthly gas bills at your household or workplace are inconsistent with the usage, this higher-than-normal amount could be a sign of faulty gas lines.
  • Decomposing plant matter
    Dead/decomposing/withering vegetation in spots around your property’s gas mains and connecting pipes could be a giveaway of gas line malfunctions.
  • Old, galvanized pipes
    Outdated galvanized gas pipes run the risk of corrosion and rusting, which need replacement in the long run to avoid gas leakage that might cause a health hazard.

More information:

When your hot wat

For the latest gas safety information from Energy Safe Victoria, please visit the following links:

You can also contact Energy Safe Victoria via info@energysafe.vic.gov.au or call 03 9203 9700 or 1800 800 158 (freecall). For any emergencies, please always dial 000.

How can Doherty Plumbing Solutions help?

As your local gasfitting experts in Melbourne’s eastern suburbs, our licensed and experienced gas plumbing professionals here at Doherty Plumbing Solutions can locate and safely carry out necessary repairs/renewals of all types of gas lines and appliances. We will provide you with a Gas Safety Report on completion of work.

Get in touch with the Doherty Plumbing Solutions office today at:

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    Arrived at the scheduled time, completed the work professionally and in a timely manner, and to our complete satisfaction, as has always been the case in the past. Staff are always polite and skilled.
    Roger Wilson Avatar
    Roger Wilson
    10/13/2024
    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
    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
    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
    Tim arrived on time and quickly and efficiently got to the work needed - snaking out a blocked storm outlet. All working now like it should and as I hoped. Great service from Doherty’s!
    Mark Coffey Avatar
    Mark Coffey
    8/12/2025
    Very quick response, great communication throughout and George was exceptionally courteous and helpful in finding a solution to my roof leak problem.
    Mandy Purcell Avatar
    Mandy Purcell
    9/25/2025
    Always reliable and responsive we have used them on multiple tasks.Matt installed a modem toilet onto a vintage drain without difficulty. I have recommended them to my friends
    John Moore Avatar
    John Moore
    7/13/2024
    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
    Prompt responses, competitive pricing and jobs completed in a timely manner. Would recommend and will use again for other jobs.
    Greg Wood Avatar
    Greg Wood
    10/01/2025
    Quick and efficient. The work was done as quoted and unlike many tradies they turned up when they said they would. Very happy with there work.
    Tony G Avatar
    Tony G
    12/13/2024
    For reliable plumbing services, call 03 9877 5775 or 0417 577 432