How To Spot A Gas Leak: Signs & What To Do To Stay Safe

Mainline Plumbing & Civil Pty Ltd • May 1, 2025

Gas is a convenient and essential part of many homes and commercial properties, powering everything from heaters and stovetops to hot water systems. But when something goes wrong, a gas leak isn’t just an inconvenience—it’s a serious safety hazard. Recognising the signs of a gas leak and responding quickly can prevent property damage, health issues, and even life-threatening situations. Whether you’re a homeowner, tenant, property manager, or business operator, understanding what to look out for and when to call a professional gas fitter is critical.

Let’s explore the warning signs of gas leaks, where they commonly occur, how gas fitters can help, and what steps to take to protect your property and those within it.

1. Recognising the Common Signs of a Gas Leak

Knowing what a gas leak looks, smells, or feels like is the first step in staying safe. Natural gas is typically odourless, but suppliers add a distinctive smell—often compared to rotten eggs—to help people detect leaks more easily.


Some key signs to watch out for include:

  • Unusual odours: A strong sulphur or rotten egg smell around gas appliances or pipes.
  • Hissing sounds: Gas escaping from a pipe or fitting may produce a high-pitched hissing noise.
  • Physical symptoms: Headaches, dizziness, fatigue, or nausea could be caused by inhaling leaking gas.
  • Dead plants or discoloured grass: Unexplained vegetation damage near buried gas lines.
  • Sudden condensation: Excess moisture on windows near a gas appliance could signal incomplete combustion.


Noticing one or more of these signs should prompt immediate action, especially before using any electrical devices or open flames.

2. Where Gas Leaks Commonly Occur Around the Property

Gas leaks can originate from various areas, and knowing where these weak points are can make it easier to stay vigilant. Both residential and commercial properties are at risk, particularly if gas appliances or infrastructure are aging or poorly maintained.



Frequent locations for gas leaks include:

  • Kitchen gas appliances: Leaks can form around stovetop connections, regulators, or oven seals.
  • Hot water systems: Over time, valves or pipes connected to gas water heaters can wear down.
  • Heaters: Especially older models or portable units with flexible hose fittings.
  • External gas lines: Underground pipes may leak due to soil movement, tree root intrusion, or corrosion.
  • Barbecues & outdoor gas setups: These can be vulnerable to damage from weather and usage wear.


Only a licensed gas fitter should inspect or service these systems to confirm whether a leak exists.

3. Immediate Actions to Take if You Suspect a Gas Leak

If you suspect a gas leak, safety is always the priority. Taking the right steps quickly can prevent ignition, explosion, or serious health effects.



Here’s what you should do immediately:

  • Evacuate the area: Get everyone outside and into fresh air.
  • Do not use electrical devices: Lights, appliances, or phones inside the premises.
  • Switch off the gas: If it’s safe, turn off the main gas supply at the meter.
  • Ventilate the space: Open doors and windows to allow gas to disperse.
  • Call an emergency gas fitter: Contact a licensed professional who offers 24/7 services to attend to and assess the leak.


Avoid returning to the premises until given the all-clear by a qualified gas technician.

4. How Professional Gas Fitters Detect Leaks You Can’t See

While you might notice obvious signs, many gas leaks remain hidden or undetectable without specialised tools. This is where a qualified gas fitter becomes invaluable. Using advanced detection techniques, they can pinpoint the exact source of a leak and determine the safest course of action.



Professional gas detection methods include:

  • Electronic gas sniffers: Handheld devices that sense small amounts of gas in the air.
  • Pressure testing: Identifies drops in pressure within the gas system, suggesting leaks.
  • Soapy water testing: A simple but effective way to detect bubbles forming around joints and fittings.
  • Pipe tracing: Locates underground gas pipes to ensure no unnoticed leaks in concealed areas.


Only a licensed gas fitter can legally perform repairs, replacements, and testing to Australian safety standards.

5. The Role of Routine Gas Maintenance in Preventing Leaks

Preventing gas leaks is always preferable to responding to one. Regular maintenance by a licensed gas fitter helps to identify worn parts, faulty seals, or corrosion before they become dangerous. This is particularly important in older properties or high-use commercial environments.



Routine maintenance should include:

  • Annual appliance checks: Ensure all gas-powered units are operating efficiently and safely.
  • Inspect pipework & connections: Especially at joints, valves, and underground installations.
  • Assessment of ventilation & carbon monoxide risks: Some leaks may not emit a strong odour but can still be harmful.
  • Upgrades of deteriorating components: Replace hoses, regulators, and valves as needed.


Preventive servicing is essential for compliance, especially for landlords and business operators.

6. Why Gas Leaks Require 24/7 Emergency Response

Gas leaks don’t wait for business hours. That’s why 24/7 emergency plumbing and gas fitting services are so vital. A leak discovered at night or on a weekend needs immediate attention from trained professionals.


Emergency gas services can:

  • Respond rapidly to callouts anytime: Day or night, weekday or weekend.
  • Locate & isolate leaks: Preventing further damage or risk.
  • Restore safe operation of essential services: Gas, hot water, and heating systems.
  • Coordinate with utility providers: For large-scale leaks or external line faults, if necessary.


Quick access to emergency services can mean the difference between a minor issue and a major incident.

7. Gas Safety in Commercial vs Residential Properties

Gas safety isn’t one-size-fits-all. Residential homes' needs are often very different from those of commercial sites, which typically have larger gas systems, higher demand, and stricter compliance obligations.



Key differences include:

  • Complexity of systems: Commercial kitchens, workshops, and industrial premises often have intricate gas infrastructure.
  • Frequency of use: Commercial systems are generally under more continuous strain.
  • Regulatory compliance: Businesses must meet specific safety standards for operation and insurance.
  • Risk management: Commercial gas leaks may impact more people and involve broader liabilities.


Both environments require experienced gas fitters with the capability to assess and manage the unique risks involved.

8. Inclusive, Culturally Aware Services for Safe Gas Work

Choosing a gas fitter who understands the diverse needs of local communities adds another layer of reassurance. Respectful communication and cultural awareness matter for Indigenous and multicultural households and businesses.


An inclusive gas fitter should:

  • Respect diverse languages & backgrounds: Offering clear, understandable communication.
  • Support Indigenous-owned enterprises: Contributing to local community economic participation.
  • Uphold cultural safety on-site: Recognising sensitivities and tailoring their approach where needed.
  • Promote equitable service delivery: Making safety and professionalism accessible to all.



This approach fosters trust and ensures that all clients receive the same high standard of service and protection.

Get Help from a Trusted Gas Fitter

At Mainline Plumbing & Civil, we’re proud to provide inclusive, culturally respectful gas fitting services for homes and businesses. As an Indigenous-owned business offering 24/7 emergency support, we prioritise your safety, comfort, and peace of mind.


If you’ve noticed signs of a gas leak or simply want to schedule a routine check, we’re here to help. Call our gas fitters in Dubbo for more information or to book a consultation or service.

By Mainline Plumbing andv Civil Pty Ltd Client September 3, 2025
Preparing for a plumbing emergency is probably the wrong way to put it. Being prepared is more to the point, and it is a process that starts even before a plumber sets foot in your building. If you are starting from scratch, having the premises built, you are perfectly placed to do the job properly. If you have bought or taken over something that has been in operation for some time, you may be kitting it out because your requirements are rather different or adapting what is there already. Either way, avoiding commercial property plumbing emergencies is the object of the exercise, and this starts with choosing a good company offering commercial plumbing services . That is to say, you probably don’t contact the people who installed your new shower cubicle at home and make their day with the prospect of a big job – unless you know they have the expertise and capacity to deal with that big job. This is no place for sentiment. You’re looking for an outfit that offers commercial emergency plumbing services as part of their regular commercial plumbing services. You will find them online and you’ll still see some advertising in the newspapers and local magazines. You may need to discuss your requirements with them and get an estimate, which will mean showing them around the premises and explaining a bit about what your business entails. Having a good working relationship with your tradies is very helpful and, in this case, can be critical. Nobody is anticipating commercial property plumbing emergencies , but these things happen and the better prepared you are, the greater the chance of minimising trouble. If there are flammable substances on your premises, for instance, the risk of fire increases dramatically, so you fire prevention strategy has to be extremely well thought out, and plumbing contingency planning is best done collaboratively. You know your business and the common hazards as well as the occasional ones that can occur without warning. Is a Fire a Plumbing Emergency? Having a good water supply in the building is clearly essential for all kinds of reasons, and fighting fires is one of them. However, the company carrying out your commercial plumbing services should be well aware of the limitations of water in that respect. Your fire emergency provisions may need to involve foam, dry powder, CO2 or even wet chemicals. However, water can still be essential for many types of blazes, and that is why the fire trucks are still geared up for dousing flames with good old H2O. Water-based Plumbing Emergencies The more common situations that could call for commercial emergency plumbing are leaks and bursts. A leak is a subtle, subversive threat that can suddenly spell trouble if water gets into machinery or the electrical system. Therefore, you need to have a plan for if this happens. Bursts are more dramatic and can cause flooding with clean water or wastewater, and whichever one it is, it needs to be shut down ASAP. Commercial Emergency Plumbing: What to do Let’s say you have taken care with your commercial plumbing services, but something happens anyway; what are you going to do? The most important thing is to stay calm, because racing around in a panic is not going to help. You need to make cool, rational decisions and the first one is to stop the emergency at its source. That might mean shutting down the water supply to a machine or shutting off the water altogether at the mains. It could mean throwing the master switch in the electricity box to avert any danger of electrocution. Call the emergency services immediately and once you have done what you can to stop the flow, get out of the building. You’ve seen the signs in hotels, and you’ve heard the safety briefings on planes: leave anything you don’t absolutely need and get out of there. An emergency is an emergency, and the crucial thing is to make sure everyone involved is safe, including yourself. The aftermath and the repercussions you can deal with afterwards. Preventing Commercial Property Plumbing Emergencies With luck you will never have to deal with a commercial property plumbing emergency, but you know what they say about luck: you make your own. Find a good provider of commercial plumbing services, work with them to get the best possible system in place and don’t let the whole thing down by cutting costs. Using good quality equipment installed and serviced by experts is the best kind of insurance. And there’s the other crucial word: maintenance. Get it done regularly and keep an eye out yourself. Nipping trouble in the bud can save a lot of heartache as well as money, so be vigilant and encourage your employees to do the same. At Mainline Plumbing & Civil, we can help you prevent commercial plumbing issues. Read more about our services here .
By Mainline Plumbing andv Civil Pty Ltd Client September 3, 2025
While plumbing in the home is a relatively straightforward business, with the kitchen and bathroom to look after plus the water tank and boiler, in commercial premises it can be a lot more complex, not least because of the scale. In a big commercial unit, you may have hundreds of metres of pipes plus various areas with different purposes and therefore different plumbing needs. It stands to reason, then, that the tradespeople who provide a good, cheerful service in residential settings are not necessarily the best choice for bigger buildings. There are extra considerations in a commercial building, with fire safety prominent among them, and this involves specialised training. There may also be working at height to consider, which again means gaining knowledge and expertise over and above the basic requirements of the plumber’s trade. Certification is needed in specialised areas and there are plumbing compliance standards to be met. Employees of an industrial plumbing contractor will have spent plenty of time studying to gain a thorough understanding of working in commercial settings – and there is a huge variety within the category. Take, for instance, the difference between a factory and an office block, a school’s classrooms and its gymnasium, and that’s before we get to the very special environments of clinical units like hospitals. Every commercial unit has a requirement for water, and a large-scale plumbing infrastructure presents very different issues from a two-bedroom home. Business Plumbing Solutions If you are having a building fitted out for a business, it is important to get a commercial plumbing contractor involved at an early stage. Plumbing has to be incorporated into the premises, rather than added on afterwards. If it’s an office suite, you may be thinking about the ambience, the light, the acoustics, and generally making sure it’s a good place for productivity – and productivity comes from people being comfortable and able to concentrate. While the kitchen area may not be high on your list of priorities, having a decent one is all part of being the kind of employer people want to work for. If you’re setting up an industrial unit there may be a requirement for some showers in addition to the usual washing and toilet facilities, but how big and where? An experienced industrial plumbing contractor can draw on past projects to show you what works and what doesn’t, thereby saving you from making errors that detract from the perceived status of the place of work. Everyone has relatively high standards these days, and it is important that the plumbing doesn’t let you down in either its scope or efficiency. You won’t find industrial options in the hardware superstore on your local industrial estate, so you can either make it up as you go along and take your chances or you can talk to someone accustomed to large-scale plumbing infrastructure. They’re not going to try to push you towards things you don’t need, because their job is to install and service units, not sell them. Having said that, they will have seen which options previous clients were happy with and those that people regretted and soon had to replace. What Extra Skills Do Licensed Commercial Plumbers Have? All plumbers are used to working in confined spaces, but in a big setting, particularly one with high ceilings, safety becomes even more important. A licensed commercial plumber will be trained to work in these conditions, and not only will they be more aware of safety, but because they are comfortable working like this, they can get a good job done rather than failing to do their best because they want to get it over with. Working at heights, for instance, is not something that just anyone would be prepared to do, but a company offering business plumbing solutions will have staff who can work safely up in the rafters while seeing to anything from water pipes to sprinklers. They will have a good knowledge of fire prevention and be able to provide the premises with fire hydrants and reels, the sort of hosing that rolls up flat for convenience and space-saving but turns into a big, fat hose full of water when needed. A plumbing company billing itself as commercial plumbing contractors should also be able to guide you through the legal requirements and point you towards the people to talk to at the council to make sure premises are up to scratch as regards local regulations. If You’re Taking Over an Existing Building Expert assistance is essential when you take over a property that someone else set up, because it is now your responsibility, and a good firm of commercial plumbing contractors will cast an expert eye over the setup to see if it’s okay as it is or needs upgrading. Health and safety regulations are not just obstacles put in your way by bureaucrats; they exist to safeguard your workforce and your customers. At Mainline Plumbing & Civil, we cover all commercial plumbing needs. Read more about those services here .
By Mainline Plumbing andv Civil Pty Ltd Client September 3, 2025
By Mainline Plumbing andv Civil Pty Ltd Client September 3, 2025
By Mainline Plumbing andv Civil Pty Ltd Client September 3, 2025
Annual plumbing maintenance: the very idea may be something you’ve never considered because you didn’t feel it was necessary. But maintenance means prevention rather than cure. It’s why we have a checkup at the doctor’s or the dentist’s. It’s why we get the car looked at periodically. Why should your plumbing be any different? Plumbing System Upkeep: The Essentials Buildings don’t look after themselves, and there is one element in particular that we need to keep an eye on, because it is everywhere in the house: under floors and in walls, behind cupboard doors and household appliances. Plumbing makes the world go round, you could say, and in this part of the world most of us Australians are fortunate enough to have the benefit of a good water supply and what used to be called “all modern conveniences”. We don’t see that expression much anymore because it’s like advertising a place as having hot and cold running water. What do you think this is, the back of beyond? So, everybody has water, but water comes with hardware and hardware can malfunction. Joints can separate, causing leaks, cracks can occur, also causing leaks. Pumps can fail. Pipes can get clogged. It’s a long list and the only way to keep on top of this water business is to have a routine plumbing service schedule . That means finding a good maintenance plumber and getting them to keep an eye on things. A burst pipe can flood a property alarmingly quickly, causing all sorts of trouble from ruined carpets to damp in the walls – and if it gets into electrical systems there can be physical danger as well as wrecked devices to deal with. And that’s just the clean water. A problem involving wastewater, which includes sewage, can get everywhere in the same way but with the added threat of a health hazard, so it’s not just unpleasant but can lead to infections and illness. What Will a Maintenance Plumber be Looking for? A good maintenance plumber can spot potential issues is their early stages. While you as the householder or occupier may notice obvious signs of water-related trouble, such as damp and mildew, a routine plumbing service can expose less glaring examples before they develop. This happens because the plumber is an expert who sees this kind of thing all the time, whereas the householder has more to keep an eye on and less expertise to do it with. Part of the reason that water gets away with causing the trouble it does at times is that pipes and appliances are in notoriously awkward places. Problems can occur under the sink, where it is hard for many people to even get down, let alone see clearly when they’re down there. If there is something going on behind a washing machine or dishwasher, these are heavy items that can’t be quickly swept aside so you can have a look. Similarly, water tanks might be in the attic or some similarly difficult location. It’s what you want when you’re planning the layout: keep the ugly practical stuff out of the way. But when there is an issue to deal with, that suddenly doesn’t seem so clever. Your maintenance plumber, though, is used to this kind of thing and will be armed with everything from a telescopic stepladder to a powerful torch. In addition to that, though, they have experience to draw on that can almost amount to a sixth sense. They’ve got things in the back of their mind that include such relatively unlikely scenarios as plumbing issues after settlement, which is a bigger picture altogether. We all have our areas of expertise in which we can see things other people can’t, and a good plumber has a nose for trouble that sometimes literally involves the nose, because unusual smells can indicate the need for investigation. As plumbing can potentially cause such serious problems there may be plumbing issues strata to deal with, which makes clear who is responsible for rectifying the issue and what happens next. In an ideal situation the maintenance plumber will spot the trouble early and it won’t turn into a problem, but whatever happens, the sooner it is diagnosed and fixed the better. How a Routine Plumbing Service Can Save You Money Leaks are an issue throughout the water industry because water is a precious resource, and the authorities can’t go through the process of capturing it and treating it just to have it disappearing on its way to the customer. In the same way, if you’re paying for something, you don’t want it sneaking away when you’re not looking, so it literally pays to keep an eye out for leaks. At Mainline Plumbing & Civil, we’ll be there for all your plumbing maintenance needs. Find out more about our residential services here .
By Mainline Plumbing andv Civil Pty Ltd Client September 3, 2025
By Mainline Plumbing andv Civil Pty Ltd Client September 3, 2025
By Mainline Plumbing andv Civil Pty Ltd Client September 3, 2025
Plumbing maintenance: it sounds like a simple matter, right? Not a lot of moving parts to consider, so very little wear and tear. It’s just water running through pipes. But that is a gross simplification of a system that is absolutely fundamental to the running of a home or a commercial premises. Water is everywhere in your building, and it needs to be looked after at every stage. That’s why you may need a maintenance plumber to give it the once-over regularly, particularly if your place is quite big, rather old or, at the other extreme, bang up to date with some expensive machinery and devices doing their stuff quietly and helpfully in the background. Home Plumbing Inspection and Preventative Plumbing Care: What’s on the List? While the headline topics may be leaks and their potential to cause water damage, let’s look at it from start to finish. How’s your water pressure? It needs to be just right, because if it’s too low it can take ages to run a bath, deprive you of a good shower, or make filling the kettle a chore. Low water pressure can be just one of those things: a matter of location. You may just be in a part of the world where everybody’s water pressure is low. In which case you might want to invest in a power shower, which can at least perk things up in that department. But it may not be just that. It could be that your pipes are old and clogged. If you live in an old property the pipes bringing the water from the street to your place could be the original ones, which might mean lead. While the water you receive should be basically clean and pure, it will still contain small amounts of impurities which can stick to the inside of the pipes. Over time that reduces the diameter, which makes it harder for the water to get through. What can be done about this? Replacement is the best option at this point. Replacing your exterior pipes isn’t too dramatic or time-consuming. If you have to go through the whole house, that’s going to take longer, of course, but that’s what owning a property is all about. Check for Damage and Leaks You should check for leaks in the piping and check for toilet leaks. Water damage isn’t all about gushing torrents wrecking the place. Water creeps out of tiny cracks and imperfect seals, and then it can work its way into the floor, the walls, the fixtures and fittings, just subtly ruining things. You should check for corrosion and examine exposed pipes. Do your pipes need insulating? That will depend on where you live, but it’s a question worth asking. Check your shut-off valves and inspect sump pumps. Don’t know what or where they are? Then you definitely need a maintenance plumber. These are the sorts of things that can deteriorate before your very eyes because you get used to what is happening to them. But be honest: is that shower head with the slight drip really something to hang onto? You may be able to clean them and maybe replace a washer, or you may want to just give the shower a lift by getting a smart new head. Ever thought to check the washing machine hoses? All you really notice is the front, but what are the hoses like at the back? If they’re a bit ropey and on the verge of letting you down, you need to know about it to prevent an incident. Same with the toilet. You may not want to get down there to inspect it. Depending on your mobility you may not physically be able to do that, but somebody needs to have a look now and then. And then there’s the exit systems: check your drains and sewer connections. If there are unsavoury smells in certain places, you may be accustomed to them, but other people visiting you are going to detect them. Contact a Maintenance Plumber to Put Your Mind at Ease and Avoid Trouble Plumbers are not just there for a crisis. These may be the people who installed the system in the first place, or they may be better than those guys and able to help you before something unpleasant happens. Everybody with a decent car gets it serviced regularly, and how much more expensive is your house? You owe it to yourself to get a professional maintenance plumber to have a look. Everything might be fine, but they can warn you about potential issues and if you have been thinking about changing things anyway, they will have ideas about what you can do to improve your plumbing. And better plumbing means a better house. Contact our expert team at Mainline Plumbing & Civil to ensure everything’s working here .
A man in a hard hat is working on a boiler.
By Mainline Plumbing andv Civil Pty Ltd Client July 21, 2025
A man is pumping a hose into a manhole cover.
By Mainline Plumbing andv Civil Pty Ltd Client July 21, 2025