We test the parts before quoting a new unit, and we tell you the age of yours and the specific fault in writing. On a system that is not old, that is very often a repair.
Online Now!·--:--
Hot water is the job most often turned into a same-day replacement when a part would have done. Not always dishonestly, but being without hot water makes people say yes quickly, and that is a lot of the reason it happens.
The decision rule is not complicated. Under about eight years, a failure is usually the element, the thermostat or the sacrificial anode, and those are repairs. Past twelve, the tank lining is near the end whatever went wrong today.
So before anyone quotes you a new unit, two things are worth having: the age of the system, and the specific fault they found. We put both in writing on every hot water job.
If it is a repair, we will say so, because a customer who was told the truth about a $300 job is more use to us than one sold a $2,000 one they did not need.
Ask what was tested and what the result was. A written quote will still be valid tomorrow, and it might turn out to be a part.
Hot water fails at inconvenient moments, people want it fixed today, and a same-day replacement is an easy thing to agree to when you are standing in a cold shower.
Sometimes a replacement is genuinely the right answer. Frequently a part would have done and nobody asked the question.
This page gives you the two facts that decide it, so you can ask.
The common failures at that age are the element, the thermostat or the valve, and all three are parts rather than systems. A repair typically sits in the low hundreds.
A tank that age has not reached the end of anything, and replacing it means throwing away years of remaining life.
So if the unit is under eight and somebody is quoting a replacement, ask what specifically has failed and whether the part is available.
By then the tank's internal lining is near the end of its life whatever else is wrong, and spending on a part buys a short extension rather than a repair.
That is the honest position, and we will give it even though the smaller job would be easier to sell.
Between eight and twelve it genuinely depends on the fault and the condition, which is why the diagnosis matters.
Two facts, and they decide the entire decision. Any plumber can supply both in a sentence and there is no reason for either to be vague.
The age comes from the compliance plate on the unit, which also carries the make and model. Photograph it yourself before anybody arrives.
If a quote for a replacement does not name what has failed, that is worth asking about before agreeing to anything.
If water is coming from the tank itself rather than from a fitting on it, that is the steel failing and there is no patch for it. Anybody offering one is selling you weeks.
That is the one case where an immediate replacement is genuinely the right answer, and we will say so plainly.
Water from a valve or a connection on top is a different thing entirely and it is usually a small repair.
Sydney's supply is soft, so limescale is rarely what kills a unit here. The sacrificial anode corrodes in place of the steel and the tank starts spending itself once it is gone.
That means descaling and flushing advice written for hard-water places does not apply to your cylinder at all.
Renewing an anode is inexpensive against a replacement and it is the single most cost-effective thing available on a mid-life tank.
A unit that empties mid-shower is generally undersized for how the household now behaves rather than broken. Nothing has failed and a replacement may not help.
Capacity is drawn down by what is taken in the same short window, and households change on that measure without the building changing at all.
Worth distinguishing before anybody quotes anything, because they go down completely different paths.
A shower draws hot and cold together, so the head sets the rate the cylinder is drawn down at. Older heads 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 almost nothing and you know the issue is genuinely the system.
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.
Any one is worth a look. Two together is a unit to plan for rather than wait on, and planning is where you get to choose the timing and compare prices.
An emergency replacement is the most expensive version of the same job and the one with the least choice in it.
Hot water installation is licensed work, and the same verification applies as anywhere else on this site.
The compliance paperwork also matters for the manufacturer warranty, which generally requires installation by a licensed person.
So the paperwork is not administrative. It is part of what you are buying.
Install price is only half the decision. The cheapest unit to put in is generally the dearest to run, and over ten years that gap is larger than the difference in purchase price. Worth understanding before choosing rather than after the first bill.
| System | How it heats | Typical life | Worth choosing when |
|---|---|---|---|
| Electric storage | An element heats a tank, often overnight on a controlled load tariff | 8 to 12 years | Upfront cost is the constraint and there is no mains gas to the street |
| Gas storage | A burner under a tank keeps a stored volume hot | 8 to 12 years | Mains gas is available and there is room for a tank plus flue clearances |
| Continuous flow | Gas heats water on demand, nothing is stored | 15 to 20 years | There is mains gas, and you want it never to run out mid-shower |
| Heat pump | Moves heat from the air into the tank rather than making it | 10 to 15 years | There is no gas, there is airflow, and rebates bring the price down |
| Solar with boost | Roof collectors, with an element or burner covering the gap | 15 to 20 years | The roof suits it and the upfront budget is there |
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 inside the same hour rather than how many live in the house.
| 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 |
| Two bathrooms at once | Size up a step | Size up a step | 26 L/min, no wait |
Written down with the age of your unit and the fault we found, before you agree to anything. These are indicative 2026 ranges, published so you can compare any quote against them.
Element, thermostat, valve or anode. Very often the whole job on a newer unit.
Like for like in the same position, old unit removed and taken away.
Nothing stored, nothing to run out. Needs mains gas at the property.
Before rebate. The efficient answer where there is no gas to the house.
The two facts that decide repair or replace, written down before you choose.
These are the makes we repair and install. We will always tell you the age of your unit and whether a part will fix it before quoting a replacement.
We service and replace these systems as an independent licensed plumber. We are not an agent for, or endorsed by, any of these manufacturers.
It decides most of this before anyone drives anywhere, and it tells us what parts to bring.
Element, thermostat, valve and anode checked before anyone suggests a new system.
Both facts written down with the price, so the decision is yours and you can take it away.
Same day where we can, tested on completion, and the old unit taken away if it is a changeover.
Tell us the age of the unit when you ring. On anything reasonably recent this is very often a part, and we would rather fit it than sell you a tank.
Call 1300 381 569Age is the rule, and it is worth knowing before anyone comes out. Under about eight years, a failure is usually a part: a thermostat, an element or the sacrificial anode. Those are repairs and they are not expensive. Past twelve years you are spending on a tank whose lining is near the end regardless of what failed today, so replacement generally is the honest answer. Between those it depends on what has gone and what the tank looks like inside. Ask any plumber to tell you the age and the specific fault before they quote a new unit.
Not without testing it. There are cases where it is obvious, mainly a tank that has rusted through and is leaking from the body, and no plumber can repair that. But a unit that has simply stopped producing hot water needs the element, thermostat, valve and anode checked before anyone can honestly say it is finished. If a replacement is proposed without any of that happening, it is fair to ask what exactly was tested and what the result was.
Sydney's water is soft, so limescale is rarely the culprit here, which surprises people from harder water areas. What fails is the sacrificial anode, a rod that is designed to corrode so the tank does not, and once it is used up the tank itself starts to go. Beyond that, elements burn out and thermostats fail. The first three are parts. Only the tank is a replacement.
Only if you actually want to. Being without hot water is genuinely unpleasant, and that is exactly what makes it easy to sell an unnecessary replacement on the spot. A written quote with the licence number, the age of the unit and the specific fault on it costs you nothing and takes ten minutes. If it is a repair, you will have saved a great deal. If it is a replacement, the quote will still be there tomorrow.
Where mains gas reaches the property, continuous flow is hard to beat: nothing stored, nothing to run out, and it comes off the floor. Where there is no gas, a heat pump is the efficient option and government rebates generally apply. Straight electric storage is the cheapest to install and the most expensive to run over its life, which is a trade worth understanding rather than defaulting into.
A like-for-like changeover in the same position is usually a few hours and very often same day. Switching type, for instance storage to continuous flow, takes longer because the pipework and sometimes the gas or electrical supply has to change. We tell you which it is when we quote, along with anything that needs another trade, rather than discovering it halfway through.
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 installed. A heat pump starts around $3,200 before any rebate. Every figure is written down with the age of your unit and the fault we found, before you agree to anything.
Let us know roughly how old the unit is, and whether anyone has already told you it needs replacing. We are happy to give a second opinion on that.
Parts tested first, the age and the fault written down, and a price you can take away and think about.
Online Now!·--:--
