Repaired where a repair is honest, replaced where it is not, and sized on how quickly it comes back rather than on the number printed on the side.
Online Now!·--:--
Two completely different complaints arrive under the same sentence. One is that there is no hot water at all, which is a fault. The other is that it runs out, which usually is not.
A storage system holds a fixed volume and reheats at a fixed rate. If four people want showers inside the same forty minutes, a healthy tank will still empty, and it will feel exactly like a failure from inside the fourth shower.
The number that decides this is recovery rate, which is how fast the unit reheats after it has been drawn down. Nobody is ever quoted it. A smaller tank that recovers quickly can beat a larger one that does not, when demand arrives in a burst rather than spread across the day.
So the first question we ask is not what is wrong with it. It is how many people want hot water inside the same hour. If the answer explains the complaint, a bigger tank is one option and it is rarely the best one.
Shut it off and call. Flooring and cabinetry will cost you considerably more than the cylinder does.
Fixed volume, fixed reheat rate, and a household that all wants it at once. Those three numbers between them decide whether anybody gets a cold shower.
A tank in perfect condition will empty if the draw is concentrated enough, and nothing about that is a fault.
Which is why replacing a working unit with an identical one disappoints. The arithmetic has not changed.
How fast it comes back matters more than how much it held, when demand is concentrated into forty minutes. A smaller tank that reheats quickly can outperform a larger one that does not.
Recovery rate is a published figure for most units and it is the number nobody is told about when they buy.
Ask for it when comparing systems, because on a household that showers in a block it is the more relevant of the two.
It stores nothing, so there is no volume to exhaust and no such thing as arriving too late. It heats on demand for as long as demand lasts.
The trade is that it needs an external wall, a flue position with the required clearances from windows and vents, and gas capacity to feed it.
On smaller properties here those are genuine constraints rather than details, and they get checked before anything is ordered.
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 capacity.
A tank does not care how much hot water a household uses in twenty four hours. It cares how much is drawn between about half past six and half past seven.
Which is why a system that coped for a decade can start failing without anything having gone wrong with it, when a household's routine compresses.
Teenagers are the classic cause, and so is a change in who works from home. Describe the real pattern when you ask for advice.
Space is tight in a lot of this housing, and where a unit will physically and compliantly fit constrains the choice more than preference does.
A heat pump needs airflow, clearance and somewhere its noise is acceptable to a neighbour, which on a small block near others is a real question.
Getting the old unit out is part of the job too, and in a side return or an internal cupboard that is a genuine part rather than an afterthought.
Anything installed outside this close to the coast has a harder life than the same unit inland. Casings, fittings and fixings all corrode faster.
It is not a reason to avoid an outdoor unit. It is a reason to expect a shorter external life and to keep an eye on the fittings rather than only the tank.
Where a choice of position exists, sheltered from prevailing weather is worth having over convenient.
It means the descaling and flushing routines written for hard-water places are largely irrelevant to a tank here, and following them will not extend its life.
The relevant component is the sacrificial anode, which corrodes deliberately to protect the steel and eventually runs out.
Getting it renewed is inexpensive against a replacement, and it is worth adding to any visit that is already happening rather than booking on its own.
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.
The steel has gone. There is no patch for that, and nobody honest will offer one. A weeping fitting on top of a cylinder is a repair. Water from the body is not.
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.
In a building with anybody below, that becomes urgent rather than important.
The five options differ less in whether they work and more in how they behave when several people want hot water at once. That is the comparison worth having.
| Type | How it behaves under load | Expected span | Worth considering when |
|---|---|---|---|
| Electric storage | Holds a volume, reheats slowly once drawn down | About 8 to 12 years | Demand is spread through the day rather than concentrated |
| Gas storage | Holds a volume, reheats noticeably faster than electric | About 8 to 12 years | Gas is connected and mornings are the pinch point |
| Continuous flow | Stores nothing, so it cannot be emptied at all | About 15 to 20 years | The complaint is running out rather than not working |
| Heat pump | Holds a volume, efficient, moderate recovery | About 10 to 15 years | Running cost matters and there is outdoor space with airflow |
| Solar with boost | Holds a volume, with an element covering poor weather | About 15 to 20 years | The roof suits it and you are keeping the house a while |
Ignore the household size for a moment and count the busiest hour instead. That is the number that decides whether a system feels adequate or infuriating.
| People wanting hot water in one hour | 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 showers running together | Size up a step | Size up a step | 26 L/min |
Fixed price agreed before anything starts. These are indicative 2026 ranges.
Taken off the repair in full if you ask us to do it.
The most common electric fault by a distance, and the reason a cold tank is not automatically a dead one.
Cheap insurance on a cylinder with years left in it.
Unit, install and removal of the old one, in one figure.
Subject to gas at the property and a wall that meets the flue clearances.
Electric storage right through the older housing here, gas wherever a property is connected for it, and continuous flow in every place where running out was the actual complaint. These are the makes behind 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.
How many people, in what window. That answer separates a fault from a capacity problem before anybody drives out.
Every unit carries a compliance plate with a date on it, and we read it out, because a real age turns repair or replace into arithmetic.
Anode, element, thermostat or valve where that genuinely solves it. Nothing gets changed over while it still has life in it.
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 same-day and plenty of changeovers are too.
Call 1300 381 569Usually not. Running out is a capacity answer rather than a fault. If several people want hot water inside the same forty minutes, a tank that is perfectly healthy will still empty, and putting the identical unit back reproduces the problem exactly.
How fast the system reheats after it has been drawn down. It is the number nobody quotes you and it decides more than capacity does. A smaller tank that recovers quickly can outperform a bigger one that does not, if the demand comes in bursts rather than all at once.
Not automatically. A bigger tank costs more to buy, more to keep hot, and needs somewhere to live. If the demand is concentrated in one short window, the honest answers are usually more recovery, or continuous flow, which cannot run dry at all.
Soft water is exactly why they fail the way they do. In hard-water places a tank silts up with scale. Sydney's supply is not like that, so instead the sacrificial anode gets consumed protecting the steel and the tank starts corroding once it has gone, or an element burns out. Both are frequently repairs.
On a unit you plan to keep, it is the best value job in this trade. It costs a fraction of the tank it protects and it is the only maintenance that genuinely adds years.
Replace. A leaking cylinder means the steel has gone, and there is no version of that which gets patched. Shut it off and ring, because the water damage compounds daily.
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.
Two things get us most of the way on the phone: what type of unit it is, and how many people want hot water inside the same hour.
We keep it if it can be kept, change it if it cannot, and the figure is settled first.
Online Now!·--:--
