Repaired or replaced, often the same day. What you can install depends on whether you are in the estate or one of the older houses, and those are different conversations.
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The diagnosis is the same everywhere. Sydney's water is soft, so a storage tank is protected by a sacrificial anode that corrodes so the steel does not, and once it is spent the tank corrodes instead. That or a failed element is most of what we see.
What differs here is what can replace it. A master-planned estate had one hot water arrangement designed across the whole development, at the time it was built, for the scheme as a whole.
So changing it in one apartment runs into decisions made for everybody, and into what the owners corporation permits where anything sits on common property or is visible externally.
The older detached houses made their own decisions over decades and are much more open. There the main question is simply whether gas reaches the property and what suits the household.
That reaches the home below quickly. Isolate it, tell the neighbour, and ring. It is not a repair and it is not something to watch.
A master-planned scheme had one hot water arrangement designed across the development, and every dwelling in it inherited that decision.
Which means what you can install is frequently narrower than the catalogue, because the position, the flue route and sometimes the fuel were fixed in 1995.
It is worth establishing what the scheme actually did before shopping for a replacement, and the building manager is the person who knows.
Each made its own decisions over decades, so the constraint is simply what suits the property rather than what a scheme settled.
That is more freedom and slightly more work. Gas availability, the space the current unit occupies, and where a flue could terminate all have to be checked per property.
It also means a neighbour's choice tells you very little, which is the opposite of the situation across the road in the estate.
Anything that changes the outside of a building, a flue penetration in particular, is common property in a strata scheme and needs the building's agreement.
That is a normal process rather than an obstacle, and it has a timeframe. Starting it before you order an appliance is considerably easier than after.
It is the single most common reason a straightforward replacement in a scheme takes longer than the same job in a house.
It reaches the home below quickly, and the water damage outruns the cost of the unit within hours rather than days.
Turn the water off at the unit, kill its power, and tell building management before you arrange anything else. The people below cannot see it happening.
Photograph it before anybody cleans up, because in a scheme more than one insurer may need to understand what occurred.
Sydney's supply is soft. The anode protects the tank by corroding in its place, and once it is gone the tank starts consuming itself.
Scale is not the mechanism here, so maintenance advice written for hard-water regions does not apply to a cylinder in this suburb.
Renewing an anode is inexpensive against a replacement and it is worth adding to a visit that is already happening.
The compliance plate carries the date. A young system with a failed component is a repair, frequently a cheap one. An old one with the same fault is usually a replacement.
Elements and thermostats are worth replacing on a unit under about ten years old. Past a certain age the parts stop being manufactured at all.
Photograph the plate and send it through before anybody drives anywhere. It decides what comes on the van.
A unit that empties mid-shower is generally undersized for how the household now behaves rather than faulty. Capacity is drawn down by what is taken in the same short window.
Households change on that measure without anything about the building changing, which is the most common reason a system that coped for a decade stops coping.
Describe your actual mornings when you ask for advice. That is the number the sizing runs on.
A shower draws hot and cold together, so the head sets the rate the unit is drawn down at. Anything installed before the WELS labelling scheme can flow well above nine litres a minute.
In a scheme this is an unusually good bet, because changing a head needs nobody's permission and costs very little.
If it solves the problem you have avoided a strata conversation entirely, which is worth more here than the money saved.
It gives you two signals, and most households ignore both. The first is rusty or greyish hot water while the cold runs clear, which can only be coming from inside the cylinder.
The second is noise on heating. A rumble or a series of knocks usually means sediment on the base with water boiling its way out from underneath it.
One of those is worth investigating. Both at once means planning a replacement rather than waiting for the morning there is no hot water at all.
A fitting weeps: repair it. The shell weeps: replace the unit. That is the whole decision, and it is usually obvious once somebody looks.
There is no patch, liner, sealant or clamp that restores a corroded cylinder, and anybody proposing one has not told you the truth about what they are selling.
In the meantime turn the water off at the unit and isolate its power or gas, particularly if it sits anywhere the water would do damage.
Most changeovers reduce to type and capacity. On this peninsula something has to be settled first: are you in a development that answered this once for every apartment when it was built, or in a house that answers it for itself? Nothing should be ordered until that is clear.
| Type | Method of heating | Expected span | Reasonable choice where |
|---|---|---|---|
| Electric tank | A submerged element warms stored water, commonly overnight | About 8 to 12 years | Gas is absent, or the current recess already accommodates a tank |
| Gas tank | A burner underneath maintains the stored volume | About 8 to 12 years | Gas is connected, with room for the tank and its clearances |
| Continuous flow | Heated in transit, with nothing held back | About 15 to 20 years | Gas is connected and the building or house allows the position |
| Heat pump | Ambient warmth is transferred into the tank | About 10 to 15 years | Outdoor room with moving air exists, far likelier in the houses |
| Solar plus boost | Panels carry the load, a burner or element covers shortfalls | About 15 to 20 years | It is a house, or a scheme-wide project rather than one flat |
Read this as a starting position, not a prescription. Capacity decides how much comes out before it is exhausted, so the number that counts is how many people want hot water inside one hour rather than how many live there.
| Occupants | Electric tank | Gas tank | Continuous flow |
|---|---|---|---|
| One or two | 125 to 160 L | 90 to 135 L | 16 L/min |
| Three to four | 250 to 315 L | 135 to 170 L | 20 L/min |
| Five upwards | 315 to 400 L | 170 L, or two units | 26 L/min |
| Single-bathroom flat | Size to the draw | Size to the draw | 16 to 20 L/min |
Fixed price agreed before anything starts, with access priced in. These are indicative 2026 ranges.
Credited against the repair if you go ahead.
The most common fault on electric storage, and a repair rather than a replacement.
The cheapest worthwhile thing you can do for a tank you intend to keep.
Supplied and installed, with removal and disposal included.
Where gas is available and the building or the property permits the position.
Electric storage through much of the older housing, gas where it is connected, and continuous flow across a good deal of the newer stock. These are the makes behind all of it.
We service and replace these systems as an independent licensed plumber. We are not an agent for, or endorsed by, any of these manufacturers.
Apartment or house. It decides what can be changed before anybody looks at a brand.
We find the compliance plate and tell you the age before anybody mentions replacement.
If an anode, an element or a thermostat genuinely fixes it, that is the quote you get.
Old unit removed and taken away, the new one installed to standard and warranted in writing.
We can usually be there the same day, and more often than people expect it turns out to be a repair.
Call 1300 381 569On electric storage, look for a tripped circuit at the switchboard. On gas, check the pilot or ignition and that the supply is on. In an apartment, also check whether anyone has been working on common services that day. If none of that explains it, ring rather than opening anything.
Very often. Sydney's water is soft, so the scale that finishes tanks in hard-water regions is not the story. Here the sacrificial anode corrodes away protecting the steel, and once it is spent the tank starts corroding. That or a failed element is most of what we attend, and both are frequently repairs.
It depends on what the scheme was built around. A master-planned estate had one hot water arrangement designed across the whole development, so what an individual owner can change is constrained by that and by what the owners corporation permits, particularly where anything would be visible or sit on common property.
Much more open. Those properties each made their own decisions over decades, so the constraint is simply what the house currently has and what suits it, which is the ordinary situation. Whether gas reaches the property is usually the main question.
No. A leaking storage tank is the end of that unit. In an apartment it also reaches the home below quickly, so isolate it, tell the neighbour and treat it as urgent rather than something to watch.
It depends on type, installation and whether the anode was ever looked at, so we will not put a number on a unit we have not seen. We will find the compliance plate, tell you the age and give a straight view on whether repairing it makes sense.
Diagnosis and report is $120 to $250, credited against the repair if you proceed. An element or thermostat is $250 to $550. An anode replaced is $300 to $600. A storage replacement is $1,400 to $2,800 installed, with access priced in.
Tell us the system type, roughly how old, and whether it is an apartment or a house. Those three answers get you a real recommendation.
Repair quoted before replacement, constraints established early, and a written warranty either way.
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