Connector & hose fixes, $100–$200
The brittle flexible connector behind the cooktop, a small part responsible for an outsized share of leaks.
Licensed Gasfitters
Licensed Gas
Plumbers In
Mosman
Gas does not grade on a curve. A connection is either tested and certified or it is a liability with a warranty problem, so every gas job we do across Mosman, from a cooktop swap to a full outdoor kitchen line, ends the same way: needle steady on the manometer, appliances burning blue, paperwork done.
- Licence 368473C, fully insured
- Manometer-tested to AS/NZS 5601, every job
- Gas smell right now? 131 909 before anything
Why Gas Work Is Licensed Work In Mosman
NSW reserves every gas task, down to connecting an oven, for licensed gasfitters, and the logic is unsentimental: plumbing mistakes stain ceilings, gas mistakes burn houses and poison air. The leaks we attend have a recurring origin story, and it is rarely the pipework’s idea, it is a confident DIY connection or a handyman’s thread tape, discovered later by someone’s nose.
What the licence actually buys is the ending: the whole installation held against a manometer until the needle refuses to move, every appliance checked for a clean blue burn and honest ventilation, and the work done to AS/NZS 5601, the clause your insurer reaches for when something ever goes wrong. Across Mosman and the Lower North Shore, no gas job of ours skips that ending.
What to look at once a year
Salt-laden harbour air corrodes older metal fittings and joints, weakening pipes and causing leaks and recurring blockages.
Three things, none needing a plumber: the condition of the fittings at the meter, whether any external gas pipework has rust breaking through the coating, and whether the flexible hose on an outdoor appliance has gone hard or cracked.
Any of those means booking a test. A gas leak on a coastal property usually begins as corrosion that was visible for a year first.
Ventilation, flues and living close to the water
Every job finishes on a pressure test with a certificate. Gas has no visible half-finished state: an installation either holds and is certified, or it is not complete.
Homes near the water are often closed up tighter against wind and weather than their inland equivalents, and modern draught-proofing has made that more pronounced. Gas appliances need air, and a well-sealed room changes the ventilation calculation.
It matters most for older heaters and anything unflued. If a room with a gas appliance has been renovated to be more airtight, the appliance should be re-assessed for that room rather than assumed still suitable.
Decommissioned lines nobody capped properly
Grand Federation and Victorian homes still run original earthenware drains that crack and sag with age, snagging waste and backing up.
Older properties routinely have redundant gas pipework, a disconnected heater, a removed stove, a fireplace converted decades ago: and it is not always capped to any standard, or capped at all.
Those are found by pressure testing the whole installation rather than the part in use. It is the single most common reason an old house fails a test, and it is usually inexpensive to put right once located.
What sea air does to gas fittings
Sizing is the quiet failure. Adding an appliance to a line that was adequate for the original load can starve everything else on it, so we check what the existing run can actually carry before extending it.
Salt attacks external gas pipework, regulators, meter connections and appliance fittings continuously. It is the reason a coastal property routinely fails a pressure test at a fitting rather than in a length of pipe.
Visible rust staining or white crusting at a joint is the early warning. It is cheap to address at that stage and considerably less so once the fitting is weeping gas.
Gas that arrived long after the house did
A period home was not built with gas in mind. Whatever it has was added later, often several times, and the runs take whatever route was available at the time, under floors, through cavities, along the outside of a wall and back in.
Which is why the first job on an older property is usually establishing what is actually there. A pressure test tells you whether the installation is sound; it does not tell you where it goes, and both matter before anything is added.
Renovating is the cheap moment
Gas lines, bayonet points and appliance connections cost a fraction of their normal price while walls and floors are already open. Retrofitting the same work later means opening finished surfaces and making them good again.
If a renovation is planned, it is worth deciding then about a future cooktop, an outdoor point or a heater, even if the appliance itself comes years later. Capping a prepared point costs almost nothing.
What it costs in Mosman
Joints & fittings, $200–$600
Leaking threads and valves sealed properly and proven again under pressure.
Pipe runs, $400–$1,500
Corroded or damaged sections replaced; concealed lines needing access run $800–$2,500.
Appliance connections, from ~$200
Connected, tested, certified. Extending a line or adding a bayonet to reach it is quoted on top, fixed, first.
The going rates, $120–$220/hr
Sydney's 2026 licensed-gasfitter range, call-outs typically $80–$150. The certificate at the end costs nothing extra, it is the job.
No gas job of ours ends without holding pressure on a gauge, that is the receipt that matters. Figures here are indicative of the 2026 Sydney market rather than a quote from us, you get your own number as a fixed price before any work starts.
Anatomy Of A Gas Job
Step 01
Step 01
Supply Off, Air Moving
Suspected leaks start with isolation at the meter and ventilation. Diagnosing a system still feeding its own leak is how amateurs get hurt.
Step 02
The Gauge Does The Accusing
A manometer proves whether the installation loses pressure; detection fluid and instruments then walk it back to the guilty joint or run.
Step 03
Compliant Replacement Only
The failed piece is replaced with compliant material to AS/NZS 5601, one connector or a full rerun, never sealant and optimism.
Step 04
Hold, Relight, Certify
The whole installation holds on the gauge, appliances relight to clean blue flames, ventilation checks out, and the compliance record is yours.
Gas Job Waiting On A Licensed Fitter?
Cooktop, heater or barbecue point: connected, tested and certified in one visit. The right way costs less than the redo.
Manufacturers generally specify every two years for heaters and annually for anything unflued. A service is combustion analysis rather than a clean, measuring what comes out of the flue, checking the burner and heat exchanger, verifying ventilation. Very few households do it, and it is the most effective thing you can do about an invisible risk.
No. Gasfitting is licensed work in NSW with no handyman tier, and that is not bureaucratic caution, unburnt gas and incorrectly burnt gas are both lethal, and the second is odourless. Unlicensed gas work also voids home insurance, invalidates appliance warranties, and surfaces during a sale.
The installation is isolated, brought to a set pressure and watched on a manometer for a defined period. If the needle holds, the system is tight; if it drops, gas is escaping and the test indicates roughly how much. It is the only way to know the condition of pipework you cannot see.
Outdoor gas appliances near the water live hard, burners corrode, jets block with salt deposit, and hoses perish faster than the manufacturer's expected life. Not a reason to avoid an outdoor installation, but a reason to specify stainless where it is exposed and to replace hoses on an interval.
It can. Gas appliances need air, and modern draught-proofing changes the ventilation calculation for a room. It matters most for older heaters and anything unflued, if a room with a gas appliance has been renovated to be more airtight, the appliance should be re-assessed for that room rather than assumed still suitable.
It can be, and testing is the only way to know. A period home was not built with gas in mind, whatever it has was added later, often several times, taking whatever route was available. The first job is usually establishing what is actually there before anything is added to it.
Continuously. Salt attacks external pipework, regulators, meter connections and appliance fittings, which is why a coastal property routinely fails a pressure test at a fitting rather than in a length of pipe. Rust staining or white crusting at a joint is the early warning.
Get The Gas Done Properly In Mosman
Licensed hands, a passing pressure test, and the certificate to prove it. Smelling gas this minute? 131 909 from outside comes before this form.
