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What Are Symptoms Of A Gas Leak?

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There are many gas leak symptoms that can indicate gas appliances and lines are leaking gas. From people feeling sick, plants dying or the flame changing colour, these symptoms should be known. Here at Optimised Plumbing Services, our Emergency Plumber team is here to resolve any gas leaks that occur inside of people’s homes. 

Common gas leak symptoms are:

  • Physical symptoms, such as headaches, nausea, fatigue, dizziness, breathing difficulties and irritated skin
  • Plants and vegetation are unhealthy or have died
  • A foul odour, often rotten egg like, has formed
  • The gas appliance flame colour has changed from blue to yellow

What are Gas Leak Symptoms and Signs?

There are many different gas leak symptoms people and the home can experience:


Physical Symptoms

People can develop symptoms from a gas leak in the home which can impact their health. Exposure to natural gas can lead to gas poisoning and the same with carbon monoxide poisoning. The following will often be felt or can be caused from low to high levels of gas exposure:

  • Headaches
  • Nausea and vomiting
  • Dizziness
  • Fatigue 
  • Throat and eye irritation
  • Difficulty breathing
  • Pale skin
  • Blisters 
  • Stomach or chest pains
  • Vision issues
  • Muscle aches and pains
  • Irritated skin

If people are feeling weak, sick or have any of these symptoms then it can be due to the gas leaking inside of the home. To prevent major health concerns, ensure to remove people from the home and hire a gas plumber as soon as possible. 



A foul odour will often occur when a gas leak occurs, often smelling like rotten eggs. This smell, being Mercaptan, is purposely put into the gas by gas companies so if it leaks people can smell it. Natural gas leaks and other gas leaks without this introduced smell would often be unnoticed because gas has no smell naturally. 


Houseplants Symptoms

Any plants inside of the home can experience gas leak symptoms and can give a clear warning that the leak is important. A gas leak will cause there to be less oxygen in the home which leads to the plants being impacted. If the plants are unhealthy or have died then this can indicate that a gas leak is occurring.


Gas Flame

The gas furnace and other gas appliances that have pilot lights should be inspected for the flame’s colour. The gas flame should be blue so if it is yellow in colour then there could be ventilation issues occurring. A certified inspector should be contacted if the flame has changed colour from blue to yellow. 

If you want more information on how to detect a gas leak then our blog is here to provide more detailed facts. 


What Causes a Gas Leak?

A gas leak can be caused by numerous different reasons, the main ones being:


Household Appliances and Gas Lines

Gas appliances around the home are connected with gas lines and they both should be inspected regularly. A connection between the two can become loose which leads to gas leaking from them. Kitchen appliances, gas hot water systems and other appliances that use gas may leak from damaged or loose parts. 


Poor Ventilation

Gas appliances and systems will be made with ventilators and pipes to divert harmful gases out of the room. If these fans or pipes are damaged or blocked then the gas might not leave the house correctly causing it to leak around the home. 


Damaged or Corroded Gas Pipes

Gas pipes if they are damaged and corroded with rust means that gas will leak from them more likely. The gas pipes will eventually need to be replaced towards the end of their lifespan otherwise corrosion will occur. A gas pipe might also be damaged or cracked from tree roots or external items breaking the pipe and causing leaks. 


How Can I Prevent a Gas Leak and Gas Poisoning?

To prevent a gas leak in the future the main methods are:


Installing Gas and Carbon Monoxide Detectors

Installing gas detectors around the home will help with preventing gas leak symptoms and issues from occurring. A gas leak will be detected early and before people can experience health problems from the leak. They should be installed near bedrooms or places away from the room where a gas appliance is located. Two to three times a year these gas and carbon monoxide alarms should be checked to make sure they are functioning correctly. 


Plumbing Inspection

A plumbing inspection is a great way to prevent gas leaks because a certified plumber will look for leaks properly. Professional techniques will be used to determine if there is a current leak occurring in the home. Other tools will also be used to inspect the gas lines and appliances for their general condition. If they are damaged or suspected to be leaking gas then they will be repaired. 

Also, if a gas leak is suspected, such as if people are feeling sick from gas leak symptoms, hiring a plumber to perform an inspection is important. The earlier a leak is found and fixed or ruled off as not occurring means the problem can be fixed before people become severely sick. 


Professional Gas Leak Emergency Plumbers

Optimised Plumbing Services will professionally resolve gas leaks inside of any home in Sydney. Our fully qualified plumbers will know what gas leak symptoms and signs to look for through careful inspection techniques. We will then repair the gas leak and provide useful tips on how to prevent them in the future. 

We will work to find and repair gas leaks all over Sydney, including Greater Western Sydney and Eastern Suburbs. Our Blocked Drain team is also here for all residents when needing urgent and professional help clearing blockages. 

For reliable gas leak repairs and inspections – always trust Optimised Plumbing Services!

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