Repaired or replaced, often the same day. Soft Sydney water means a spent anode or an element far more often than scale, and a repair far more often than people expect.
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The technical question here is the same as anywhere. 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 starts corroding instead. That or a failed element is most of what we see, and both are frequently repairs on a tank that is otherwise sound.
The second question is local. On these streets, replacing a unit can involve something visible from outside, and much of the area sits in a Heritage Conservation Area where the external appearance of a property is regulated rather than a matter of preference.
There is a third wrinkle on a mixed-tenure estate: whoever can approve a replacement is not always whoever is standing in the kitchen with no hot water.
None of that stops the work. It just means the sensible order is diagnose, quote, establish approval, then install, rather than turning up with a unit on the truck and hoping.
That one is not a repair. Isolate it and ring, because the water damage while somebody decides costs more than the unit does.
Much of this area is in a Heritage Conservation Area, where external appearance is protected, and a hot water unit bolted to a front or side wall is an external change.
That does not make a modern system impossible. It means the position gets decided with the streetscape in mind rather than purely for convenience.
It is worth raising before anybody orders equipment, because the cheapest unit in a place it cannot go is not cheap.
On a mixed-tenure estate the person with no hot water is not always the person who can authorise a replacement, and the two conversations move at different speeds.
So the useful thing from a first visit is frequently a clear written diagnosis: what has failed, whether it is repairable, and roughly what each option costs.
That document is what an owner or an agency can act on. A tenant's account of what a plumber said is not.
Replacing in the existing position means no new penetration through a wall, no new flue route to negotiate, and nothing visible changing from the street.
It is frequently the cheapest option and always the least complicated, and it is worth pricing even where you would prefer to change systems.
Where the existing position genuinely no longer works, we will say so and explain what has changed.
Sydney's supply is soft. The sacrificial anode protects the tank by corroding in its place, and once it has gone the cylinder starts spending itself.
Scale is not what ends a tank in this city, so maintenance advice written for hard-water regions does not describe your unit at all.
Renewing an anode costs a fraction of a replacement and buys years, and around the six or seven year mark it is the best value item on this page.
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 genuinely worth replacing on a unit under about ten years old. Past a certain age the parts are no longer manufactured at all.
Photograph the plate and send it through before anybody drives anywhere. It decides what comes on the van and it frequently decides the answer.
Rusty or discoloured hot water while the cold runs clear. Water at the base of the unit. Banging or rumbling as it heats. A relief valve discharging steadily rather than occasionally.
Any one of those is worth a look. Two together is a unit to plan for rather than wait on, and on this estate planning matters because approval takes time.
An emergency replacement is the most expensive version of the same job and the one with the least choice in it.
A tank 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.
These houses were sized for the households of a century ago, and very few of them still have one. A share household is the version people forget.
Describe the actual arrangement when you ask for advice, because that is the number the sizing gets calculated from.
A shower draws hot and cold together, so the head sets the rate at which a cylinder is drawn down. Anything installed before the WELS labelling scheme can flow well above nine litres a minute.
Where the alternative involves an approval process, this is an unusually good thing to try first. It needs nobody's permission and costs very little.
If it solves the problem you have avoided the whole conversation. If it does not, you have lost almost nothing and you know the issue is genuinely the system.
Houses here have been extended over a century, and a bathroom added at the back can be a long way from a unit installed where the original one went.
The water standing in that run has to be pushed out before hot arrives, which is geometry rather than a failing heater. No new unit shortens it.
The exception is a wait that has got noticeably longer than it used to be, because a change has a cause and narrowing old pipework is one of them.
A weeping fitting on top of a cylinder is a repair. Water coming from the body of the tank is not. The steel has failed and there is no patch anybody honest will sell you.
Turn the water off at the unit, kill its power or gas, and report it immediately, in writing if somebody else has to authorise the replacement.
A tank that has begun to weep does not improve, and when one goes properly the whole contents arrive at once.
Type and size decide most changeovers. Here there are two prior questions: whether anything about the installation would be visible externally on a conservation-area street, and who is able to approve a replacement. Both are worth settling before ordering.
| System | How it heats | Typical life | Suits a Kensington property when |
|---|---|---|---|
| Electric storage | A submerged element warms a stored tank, often overnight on controlled load | 8 to 12 years | There is no gas, or the existing position already suits a tank |
| Gas storage | A burner underneath holds the stored volume at temperature | 8 to 12 years | Gas reaches the property and there is room for a tank plus flue clearances |
| Continuous flow | Gas heats it in transit, with nothing held back | 15 to 20 years | Gas is available and the wall position does not raise a heritage question |
| Heat pump | Shifts ambient warmth into the tank instead of generating it | 10 to 15 years | There is outdoor space with airflow away from a neighbour's window |
| Solar with boost | Collectors on the roof, an element or burner covering the shortfall | 15 to 20 years | The roof orientation works and the visibility question has been settled |
An opening position, not a rule. With storage the question is how much you can draw before it empties, so what counts is how many people want hot water inside one hour.
| People in the home | Electric storage | Gas storage | Continuous flow |
|---|---|---|---|
| 1 to 2 | 125 to 160 L | 90 to 135 L | 16 L/min |
| 3 to 4 | 250 to 315 L | 135 to 170 L | 20 L/min |
| 5 or more | 315 to 400 L | 170 L or twin | 26 L/min |
| Two bathrooms at once | Size up a step | Size up a step | 26 L/min, no wait |
The figure is settled before a tool comes out. These are indicative 2026 bands, and access is already inside the quote rather than bolted on at the end.
Deducted from the repair the moment you decide to proceed.
The usual failure on electric storage, and it is a repair rather than a new unit.
The one modest job that genuinely buys years on a tank you want to keep.
Unit supplied and fitted, with taking the old one away already in the figure.
Where gas is available and the position does not raise a heritage question.
Electric storage runs through a great deal of the older housing here, with gas where the street carries it and continuous flow where the position allows. 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.
And who can approve a replacement. Both shape the job before anybody looks at the unit.
We find the compliance plate and tell you the age before anyone mentions replacing anything.
If an anode, an element or a thermostat genuinely fixes it, that is the quote you get.
Old unit removed and disposed of, 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 569Start at the switchboard if it is electric storage; a tripped circuit explains far more call-outs than people expect. On gas it is the pilot or the ignition, and whether the supply is on at all. Whatever the type, find out whether someone working on something else shut an isolation valve. If none of that is it, leave everything alone and ring.
Usually, yes. The supply in this city is soft, so limescale, which is what kills tanks in hard-water places, plays no part. What happens instead is that a sacrificial anode is eaten away in the steel's place, and once there is nothing left of it the tank itself starts going. That and burnt elements make up most of our call-outs, and both are typically repairs.
Possibly, and it is often a sensible upgrade. On a conservation-area street there is an extra question: whether a new unit or a flue would be visible externally, because what the outside of a property looks like is regulated here. Council decides that. We will tell you plainly when we think a proposal crosses into their territory.
That depends on who owns the property, which on these streets is not something the house tells you. We can diagnose the fault and quote the work either way. What we cannot do is proceed without whoever is able to authorise it, so it is worth establishing early.
Far too much rides on the type, the install and whether the anode was ever attended to for us to guess about a unit we have not seen. What we will do is read the compliance plate, tell you the real age, and say plainly whether repairing it still adds up.
No. A leaking storage tank is the end of that unit, and the water damage while somebody decides usually outruns the cost of replacing it. Isolate it and ring, rather than waiting to see whether it settles, because it will not.
Diagnosing it and writing it up runs $120 to $250, and that comes off the repair if you go ahead. Elements and thermostats fall between $250 and $550, a fresh anode $300 to $600, and replacing a storage unit outright $1,400 to $2,800 supplied and fitted, access already inside the quote.
Tell us the system type, roughly how old it is, and who can approve a replacement. Those three answers get you a real figure rather than a range.
Repair quoted before replacement, access priced upfront, and a written warranty either way.
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