Losing hot water counts as losing an essential service, so it is an urgent repair. Whether yours is a part or a whole unit matters more here than most places, and we say which first.
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Losing hot water is loss of an essential service, which makes it an urgent repair. So a tenant who cannot reach anyone has a path: arrange a licensed plumber, then seek reimbursement of reasonable costs up to $1,000 within 14 days of written notice.
The cap is where this gets interesting, and where people get caught. A repair to an element, a thermostat, a valve or an anode usually runs $250 to $650. That fits inside $1,000 comfortably.
A replacement starts at $1,400 and climbs. A tenant who authorises one is very likely to be funding part of a permanent improvement to a property they do not own, and there is no mechanism to get that difference back.
So we diagnose properly and tell you which it is before anything is agreed. If it is a part, we fit it. If the tank is finished, you get that in writing to put to the owner, and we do not quietly let a tenant sign off on a replacement.
Pause. A replacement is well past what an urgent repair claim covers. Get the diagnosis in writing and put it to the owner.
Its failure is treated as an urgent repair under the Residential Tenancies Act 2010, which is what gives a tenant a path to getting it dealt with quickly.
That is a genuinely useful thing to know, because a landlord or agent who is slow to respond is slow on something the legislation treats as urgent.
The conditions are the same as for any urgent repair: give notice or try to, use a licensed person, and keep the paperwork.
A tenant arranging an urgent repair can be reimbursed up to $1,000. A repair typically sits at $250 to $650, comfortably inside that. A replacement does not.
So the repair-versus-replace question is unusually consequential here. One path is available to a tenant directly and the other is not.
That is not a reason to push for a repair on a tank that is finished. It is a reason to establish which you have before anybody commits.
Under about eight years it is usually a part: an element, a thermostat or a valve. Past twelve the tank lining is generally the issue and a replacement is the honest answer.
The compliance plate carries the date, and photographing it is the fastest way to get a straight answer before anybody attends.
We will tell you which we think it is on the phone where the plate makes it clear, because that is more useful to you than a visit.
An owner asked to spend two thousand dollars on the word of a tenant will usually wait. An owner given a written diagnosis with the make, model, age and fault generally does not.
So on a rented property the most valuable output from a visit is frequently the document rather than the repair.
Ask for it, and ask for it to say plainly whether the unit is repairable.
Sydney's supply is soft, so furring up is rarely what ends a unit here. The anode corrodes in place of the steel and the tank starts spending itself once it is gone.
On a rented property nobody ever replaces an anode, because the tenant does not think of it and the owner does not see the unit.
It is worth raising with an owner, because it is inexpensive and it is the difference between a tank lasting eight years and eighteen.
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.
Report any of those in writing even though you still have hot water, because it starts a record and it gives an owner the chance to plan.
A planned replacement is cheaper for them and less disruptive for you than an emergency one.
A unit that empties mid-shower is generally undersized for how the household now behaves rather than faulty, and a share household is the version that catches people out.
That is not an urgent repair, because nothing has failed. It is a conversation with an owner about capacity.
Worth distinguishing, because the two go down very different paths.
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 rental this is a good first move, because it is cheap, reversible and needs nobody's approval if you keep the original.
If it solves the problem you have avoided a conversation entirely.
A storage unit inside an apartment sits above somebody else's ceiling, and a failure reaches them within hours.
Turn the water off at the unit, kill its power, and tell the building and the apartment below before you arrange anything else.
Then report it in writing to the agent. In that order, because the water comes first.
A weeping fitting on top of a cylinder is a repair. Water from the body of the tank is not. The steel has failed and there is no patch for it.
That is also the case where the cost exceeds what a tenant can be reimbursed, which is why getting the diagnosis in writing quickly matters.
It does not improve and it does not wait, and the damage while somebody decides is frequently larger than the unit.
Type and size decide most changeovers. Here there is a prior question that matters more: whether this is a repair a tenant can act on or a replacement that belongs to the owner. The table below is for whoever is making that call.
| System | How it heats | Typical life | Who normally decides |
|---|---|---|---|
| Electric storage | An element heats a tank, often overnight on a controlled load tariff | 8 to 12 years | Repairs can fall to a tenant under $1,000; replacement is the owner's |
| Gas storage | A burner under a tank keeps a stored volume hot | 8 to 12 years | Same split. Needs gas metered to the individual flat |
| Continuous flow | Gas heats water on demand, nothing is stored | 15 to 20 years | Owner decision. It is a change of system, not a repair |
| Heat pump | Moves heat from the air into the tank rather than making it | 10 to 15 years | Owner decision, and often a strata one if it changes the exterior |
| Central building system | One plant serving multiple flats | Varies | Entirely the owners corporation's, never an individual's |
A starting point rather than a rule. Storage size is about how much you can draw before it runs out, so the number that matters is how many people want hot water inside the same hour rather than how many live there.
| People in the flat | 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 |
| Share house, staggered | Size up, or accept a wait | Size up | No change, it does not run out |
| Two bathrooms at once | Size up a step | Size up a step | 26 L/min |
Given in writing with the diagnosis before anything proceeds. These are indicative 2026 ranges, and the first line is the one that generally fits inside a capped claim.
Element, thermostat, valve or anode. Usually inside a $1,000 reimbursement.
Beyond a tenant claim. This one belongs to the owner.
Where the flat has its own gas. An owner decision, not a tenant one.
Before rebate, where there is no gas and the position suits one.
Which side of repair-or-replace you are on, in a form you can send to an owner.
These are the makes behind most of the hot water calls we take here. We will always tell you the age of the unit and the specific fault before anyone talks about replacing 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.
Two questions on the phone that decide the whole shape of this, including who we should be invoicing.
Anode, element, thermostat and valve checked before anybody uses the word replacement.
Repair or replacement, with the figure, so a tenant knows what they can act on and an owner knows what they must.
Fixed same day where it is a part. Where it is not, you leave with the document that gets the owner moving.
Tell us the age of the unit and whether you rent. On anything reasonably recent this is usually a part, which is also the version you can actually do something about.
Call 1300 381 569Loss of an essential service is treated as an urgent repair, and hot water is an essential service. So the same path applies as any urgent repair: contact the agent or landlord and note the time you tried, and if nobody is reachable you can arrange a licensed plumber and seek reimbursement of reasonable costs up to $1,000 within 14 days of written notice. The usual conditions apply, and the Tenants' Union of NSW or NSW Fair Trading can advise on your situation.
For a tenant it matters enormously, because of the cap. A repair to an element, thermostat, valve or anode typically runs $250 to $650, which sits comfortably inside $1,000. A replacement starts at $1,400 and goes up from there, which does not. So a tenant arranging a full replacement is very likely to be out of pocket for the difference. That is why we diagnose precisely and tell you which side of the line yours is on before anything is agreed, rather than after.
Age decides it more than the fault does. Under about eight years the failure is usually a part, and the common ones are an element, a thermostat or the sacrificial anode. Past twelve you are spending on a tank whose lining is near the end regardless of today's fault. In between it depends on what has gone and what the tank looks like inside. We test rather than guess, and we say plainly what we found.
Stop, and put it to the landlord or agent in writing. A replacement is beyond what you can reasonably expect to recover under the urgent repairs provision, so arranging it yourself is how tenants end up funding an improvement to somebody else's property. What we can give you is a written diagnosis showing the unit has failed and cannot economically be repaired, which is exactly what an owner needs in order to act.
Not through scale, which surprises people from harder water areas. Sydney runs soft, so limescale is rarely the cause. What fails is the sacrificial anode, a rod designed to corrode instead of the tank, and once it is gone the tank starts corroding. Beyond that, elements burn out and thermostats fail. Three of those four are parts.
Usually still the lot owner's if it serves only one flat, even where it sits outside the front door, but the space around it is common property and that affects access and any change of position. Where a building has a central system serving multiple flats it is the owners corporation's entirely. We establish which arrangement your block has, because it changes who you should be talking to.
Diagnosing and repairing an element, thermostat, valve or anode is $250 to $650. Replacing electric storage in the same position is $1,400 to $2,800. Continuous flow is $1,900 to $3,500 where the flat has gas. A heat pump starts around $3,200 before rebate. We give the figure and the diagnosis in writing before anything proceeds.
Let us know whether you rent or own and roughly how old the unit is. If you rent, we will tell you before we start whether this is likely to sit inside what you can claim.
Parts tested first, the diagnosis in writing, and no tenant quietly signing off on a replacement they cannot recover.
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