Repaired or replaced, often the same day. In this housing getting the old unit out is frequently harder than fitting the new one, so we price that upfront.
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The diagnosis 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 corrodes instead. That or a failed element is most of what we see, and both are frequently repairs.
What is different is the replacement. A great many houses on this peninsula have no side access whatsoever, open straight onto a narrow street, and have nowhere for a vehicle to stand while a tank comes out.
A full storage unit is heavy and awkward, and manoeuvring one through a nineteenth-century hallway is a genuine part of the job rather than a footnote.
So we ask where the unit sits and what the access is before quoting, and we put the removal and the access in the figure. It is also why continuous flow suits so many houses here: it removes the problem entirely and gives back the space.
Say so when you ring. On this housing the route in and out is a real part of the price and it belongs in the quote.
No side access, a front door onto a narrow street, and nowhere to park while anybody carries a cylinder through a nineteenth-century house.
That is the constraint on a hot water changeover here, not the unit and not the price of it.
It belongs in the quote, and a quote that has not looked at the access has not priced the job.
A wall-mounted unit avoids manoeuvring a tank through the house entirely, and it takes up a fraction of the space.
In housing where a cupboard is genuinely scarce, that is not a marginal advantage. It frequently decides the choice.
The trade is that it needs an external wall and a flue position with required clearances, which on a terrace is the subject of the gas page.
Tucked into an internal cupboard, an anode goes unchecked for a decade because getting to it is a job in itself rather than a five minute look.
So position affects the life of a unit as much as the quality of it does, and a slightly less convenient spot with real access is worth more over fifteen years.
It is worth thinking about at installation, because that is the one moment the decision is open.
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 descaling advice written elsewhere does not apply to a cylinder in this house.
Renewing an anode is inexpensive against a replacement and buys years, and around six or seven years 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. An old one with the same fault is usually a replacement.
Photograph the plate and send it through before anybody drives anywhere. On these streets a second trip is a genuine cost.
Past a certain age the parts are no longer manufactured, and that is better heard on the phone than in your hallway.
Colour in the hot water when the cold is clear points squarely at the inside of the tank. Nothing else produces that combination.
Noise while it heats, a rumble or a crackle, generally means accumulated sediment with water trapped beneath it.
Neither is an emergency. Both are a tank telling you where it is up to, and acting on that is considerably cheaper than an unplanned replacement on a Sunday.
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.
In a terrace where the tank is already the largest that will fit, that changes the conversation towards continuous flow rather than a bigger cylinder.
Describe your actual mornings when you ask for advice, because that is what the sizing runs on.
A shower draws hot and cold together, so the head sets the rate a cylinder is drawn down at. Anything installed before the WELS labelling scheme can flow well above nine litres a minute.
Where the alternative is a difficult and expensive changeover, this is an unusually good thing to try first.
It costs very little and it takes minutes, and if it works you have avoided the whole problem.
These houses are narrow and deep, and a bathroom at the back or upstairs 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. That is geometry rather than a failing heater.
The exception is a wait that has got noticeably longer than it used to be, because a change has a cause.
Close the water at the unit, turn off its electricity or gas, and ring. Those three things, in that order, and then the replacement can be arranged at a sensible pace.
Water coming from the cylinder body is the end of that unit. The steel has gone and no repair returns it.
The reason for speed is not the tank, which is already finished. It is the floor, the wall and anything below it.
Type and size decide most changeovers. In this housing there are two prior questions: whether a tank can physically get in and out, and whether gas reaches the property. Both are worth settling before anything is ordered.
| System | How it heats | Typical life | Suits a Balmain house when |
|---|---|---|---|
| Electric storage | An element heats a tank, often overnight on a controlled load tariff | 8 to 12 years | There is no gas, and a tank can still be manoeuvred to where it sits |
| Gas storage | A burner under a tank keeps a stored volume hot | 8 to 12 years | Gas reaches the property and there is room for a tank plus flue clearances |
| Continuous flow | Gas heats water on demand, nothing is stored | 15 to 20 years | Gas is available and the tank's corner is worth reclaiming |
| Heat pump | Moves heat from the air into the tank rather than making it | 10 to 15 years | There is outdoor space with airflow, which is rarer here than elsewhere |
| Solar with boost | Roof collectors, with an element or burner covering the gap | 15 to 20 years | The roof has the orientation and the space, and access allows the install |
A starting point rather than a rule. Storage size is about how much you can draw before it runs out, so what matters is how many people want hot water in the same hour.
| People in the house | 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 |
| Terrace with one bathroom | Size for the draw, not the floor area | Same | 20 L/min |
Fixed price agreed before anything starts, with removal and access priced in rather than added later. 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, disposal and access included.
Where gas is available, and frequently the sensible answer in a house with no side access.
Electric storage through much of the older housing, gas where the street carries it, and continuous flow wherever a tank had to come out of a hallway and onto a wall. 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.
Where the unit sits, whether there is side access, and where a vehicle can stop. That is the price, as much as the unit is.
We find the compliance plate and tell you the age before anybody mentions replacing anything.
If an anode, an element or a thermostat genuinely fixes it, that is the quote you get.
Old unit removed and taken away, new one installed to standard and warranted in writing.
We can usually be there the same day, and more often than people expect it is a repair rather than a replacement.
Call 1300 381 569On electric storage, look for a tripped circuit at the switchboard, which accounts for a lot of call-outs. On gas, check the pilot or ignition and that the supply is on. On anything, check whether an isolation valve got closed by somebody working on something else. If none of that explains it, stop and ring rather than opening anything.
Because getting it in and out is the hard part rather than the plumbing. These houses frequently have no side access at all, the front door opens onto a narrow street with nowhere to park, and a full storage tank is heavy and awkward. It is entirely doable. It just has to be planned and priced honestly rather than discovered on the morning.
Very often. Sydney's water is soft, so the scale that finishes tanks elsewhere is not the story here. Instead the sacrificial anode corrodes away protecting the steel, and once it is gone the tank starts corroding. That or a failed element is most of what we attend, and both are frequently repairs on a tank that is otherwise fine.
Often yes, and it is one of the genuine advantages. A wall-mounted unit removes the problem of manoeuvring a tank through a narrow house, and frees the space the old one occupied, which in this housing is usually space somebody wants. It depends on gas being available and a suitable external wall position.
It matters for cost and it matters for servicing. A unit that cannot be reached properly does not get looked at, which is how anodes go unchecked for a decade. If a changeover is on the cards it is worth asking whether the new one has to live in the same place.
It depends on type, installation and whether the anode was ever checked, 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 repair is sensible.
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 the removal and the access priced into the quote rather than added afterwards.
Tell us the system type, roughly how old, and what the access is like. On this housing the third one matters as much as the first two.
Repair quoted before replacement, removal and access priced in, and a written warranty either way.
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