Repaired where a repair is honest and replaced where it is not, with the fit and the clearances checked at the house before anything is ordered.
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Two decisions sit behind almost every hot water call. Repair or replace, and if replace, what with. The first is usually answerable on the phone. The second is where the housing here has an opinion.
This is small-footprint stock. Terraces, semis and apartments, with cupboards and side returns rather than plant rooms. A replacement has to fit the space it is going into, keep the clearances its type requires, and still be reachable when somebody has to service it in eight years.
That trio quietly eliminates options before anybody gets to a brand or a price. A unit that cannot legally or physically go where the old one was is not a cheaper option, it is a delivery that goes back on the truck.
So we ask what is there and where it sits before recommending anything. The failures themselves are the ordinary Sydney ones: soft water means a dead storage unit has lost its anode or an element, and both of those are repairs long before they are replacements.
Shut it off now and call. The flooring and the cabinetry will cost you more than the cylinder does.
Cupboards and side returns, not plant rooms. On housing of this footprint, where a unit will physically and compliantly fit decides the choice before anybody talks about efficiency.
That is not a limitation to work around later. It is the first question, and answering it honestly narrows the options quickly.
A recommendation made without looking at the space is a catalogue page rather than advice.
A unit squeezed into a spot nobody can reach costs more over its life, not less. Every service visit takes longer and every part replacement becomes a bigger job.
So the position that just fits is frequently the wrong one, and half a metre of extra clearance pays for itself several times over fifteen years.
It is worth thinking about at installation, because it is the one moment the decision is actually open.
On a small property with a unit in an internal cupboard or a narrow side return, removing the old cylinder is a real part of the job rather than an afterthought.
It belongs in the quote, and a quote that has not looked at the access has not priced the work.
Mention it when you ring if the unit is somewhere awkward, because it changes who and what we send.
Continuous flow needs an external wall and a flue position with required distances from windows, doors and vents. A heat pump needs airflow, clearance and somewhere its noise is acceptable to a neighbour.
On a small block with neighbours close by, that last point is a genuine constraint rather than a footnote.
A storage tank needs floor space and a tray with a drain if it sits anywhere water would matter.
A tank that empties mid-shower is usually undersized rather than broken. Capacity is drawn down by what is taken in the same forty minutes.
Households change on that measure without anything about the building changing, and a property let to a share household is the version people forget.
So 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 at which a cylinder is drawn down. Anything installed before the WELS labelling scheme can flow well above nine litres a minute.
A pair of heads costs a fraction of a hot water system and takes minutes to fit. If it solves the problem you have saved thousands.
If it does not, you have lost very little and you now know the issue is genuinely the system.
Soft supply means nothing accumulates the way it does in cities with hard water. The maintenance advice you find online for descaling a tank is describing a different problem.
Here the mechanism is the steel corroding, and the anode is the consumable component fitted specifically to be eaten first.
Nobody checks one on their own initiative because there is nothing to see from the outside, which is why so many tanks end early.
Run the cold, then the hot. Clear cold with rusty or discoloured hot is the single most informative thing a hot water system will ever tell you, and it means the steel is corroding.
Rumbling as it heats is the other one, usually sediment sitting on the bottom of the cylinder.
Together they mean the unit is near the end of its useful life. Replacing on your own schedule is cheaper and far less disruptive than replacing on its.
Even on a small property, an added bathroom 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 first.
That is pipe length rather than a failing heater, and insulating the run helps at the margins rather than solving it.
The exception is a wait that has got noticeably longer than it used to be, because a change has a cause.
The steel has gone. There is no version of this that gets patched and nobody honest will offer one.
Turn the water off at the unit, kill its power or gas, and get the swap organised before the floor and the wall behind it join the bill.
On a small property with an internal unit, that water reaches everything quickly, which is a strong argument for not waiting.
Once the space question is settled, the rest is type and capacity. Here is how the five options actually differ, and what each one needs from the property before it is viable.
| Type | How it heats | Expected span | Suits a Queens Park home when |
|---|---|---|---|
| Electric storage | A submerged element warms a stored tank | About 8 to 12 years | There is no gas and the existing footprint already takes a cylinder |
| Gas storage | A burner underneath holds the volume hot | About 8 to 12 years | Gas is connected and the flue clearances can genuinely be met |
| Continuous flow | Heated in transit, nothing held back | About 15 to 20 years | Gas is available and the floor space is the problem |
| Heat pump | Ambient warmth moved into the tank | About 10 to 15 years | There is outdoor space with real airflow around the unit |
| Solar with boost | Roof collectors, with an element covering the gap | About 15 to 20 years | The roof works and the tank has somewhere sensible to live |
Treat these as a starting point for the conversation. Storage is judged on how much can be drawn down before the tank is empty, so the number that counts is how many people in the house want hot water within the same hour.
| Occupants | Electric storage | Gas storage | 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 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 |
Fixed price agreed before anything starts. These are indicative 2026 ranges.
Deducted in full from the repair if you ask us to carry it out.
By far the most common electric fault, and the reason a dead tank is not automatically a dead tank.
Cheap insurance on a cylinder that still has years left in it.
Unit, installation and removal of the old one, in a single figure.
Subject to gas at the property and a wall that satisfies the flue clearances.
In this part of the eastern suburbs it is mostly electric storage in the older stock, gas where a property is connected for it, and continuous flow anywhere the floor space simply was not there for a cylinder. These are the makes involved.
We service and replace these systems as an independent licensed plumber. We are not an agent for, or endorsed by, any of these manufacturers.
Type, age and the space around it. In this housing that decides the shortlist before brands come into it.
Every unit carries a compliance plate with a date on it. We read it out to you, because a real age turns repair-or-replace into arithmetic.
If an anode, element, thermostat or valve genuinely solves it, that is what happens. Nothing gets changed over while it has life left.
We run it, check the delivered temperature, take the old unit away and leave you the paperwork.
A licensed plumber answers directly. Repairs are usually a same-day job and plenty of changeovers are too.
Call 1300 381 569Soft water is exactly why they fail the way they do. In hard-water places a tank silts up with scale and that is that. Sydney's supply is not like that, so what happens instead is the sacrificial anode is consumed protecting the steel and the tank begins to corrode once it is gone, or an element burns out. Both are frequently repairs.
On a unit you intend to keep, it is the best value job in the trade. It costs a fraction of the tank it protects, and it is the one piece of maintenance that genuinely adds years.
More than most people expect, and it is the first thing we check. A replacement has to fit the space, meet the clearances its type requires, and still be reachable for servicing. In this housing that trio rules out options before anybody talks about brands.
Frequently, and it helps precisely because it is a wall-mounted box rather than a cylinder on the floor. It needs gas at the property and a wall position that meets the flue clearances, both of which we confirm before anything is ordered.
Usually not. That is a capacity answer rather than a fault. Replacing it with the same size repeats the problem exactly, which is why the sizing conversation happens before the order.
Replace. A leaking cylinder is the end of that unit rather than a fault within it. Isolate it and ring, because the water damage compounds faster than the unit costs.
Diagnosis is $120 to $250 and comes off the repair. An element or thermostat is $250 to $550. An anode is $300 to $600. A storage replacement is $1,400 to $2,800 and a continuous flow changeover $2,000 to $3,800.
Three things get us most of the way on the phone: what type of unit it is, how old you think it is, and how much room surrounds it.
We keep it if it can be kept, change it if it cannot, and the figure is settled first.
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