A new electric storage hot water system installed outside a weatherboard house

Hot water repairs · North Shore

Hot Water Repairs North Shore

No hot water? Sorted today.

Hot water tends to fail at the worst possible moment, usually the first cold shower of the morning, usually on a weekday. Voyager repairs and replaces hot water systems across the North Shore, and runs 24/7 callouts when a unit is leaking badly or failing unsafely.

Available 24/7 across the North Shore · No callout fee on eligible jobs

Fixed upfront pricingPriced by the job, not the hour
24/7 emergencySomeone answers at 3am
Lifetime labour warrantyOn eligible work
No callout feeOn eligible jobs
Hot water repairs

What's usually gone wrong with your hot water

No hot water at all

  • Failed heating element or thermostat, on an electric unit
  • Pilot light out or a faulty gas valve, on a gas unit
  • Tripped circuit or a failed isolation switch
  • The system has simply reached the end of its life

Hot water runs out too fast

  • A failed element in a twin-element system, often the giveaway is “we get about half a shower”
  • Sediment build-up reducing usable capacity
  • The unit is undersized for how the household actually uses it

Water is lukewarm, or too hot

  • Thermostat fault
  • A failed tempering valve, worth attending to, since it’s the part that stops the water reaching scalding temperature at the tap

The unit is leaking

  • A relief valve doing its job (some discharge is normal; a constant stream is not)
  • A corroded or failed tank, which generally means replacement rather than repair
  • A leaking connection or fitting

Discoloured or smelly hot water

  • Usually a spent sacrificial anode or corrosion inside the tank
An older stainless steel hot water system outside a house
Hot water repairs

Hot water repair or replacement?

An honest answer depends on the unit’s age, what’s failed and what it would cost to put right.

Roughly: a system in the first half of its life with a failed element, thermostat or valve is generally worth repairing. A corroded or leaking tank usually isn’t. You’d be spending real money on a unit that’s going to fail again. If the tank itself has gone, that’s a replacement.

Voyager inspects the unit and explains what’s failed, what repair would involve and what it costs, before any work is agreed. If replacement is the better value, you’ll be told that, including when it’s the less profitable answer.

As a rule of thumb:

The situation What usually makes sense
Under ~8 years old, failed element, thermostat or valve Repair: the tank has plenty of life left
8-12 years old with a minor fault Repair can still stack up: weighed against the tank’s remaining life
Past 10-12 years with repeat faults Replacement usually wins: the next fault is already queued
Tank leaking or visibly corroded Replacement: a failed tank isn’t repairable
Continuous-flow (instantaneous) unit with a fault Often repairable: these commonly run 15-20 years with servicing
A storage hot water system in a laundry
A new storage hot water system installed under a house

Not sure what you’re dealing with?

Describe what’s happening and we’ll tell you straight, including when the simple fix is the whole job.

Hot water repairs

What decides the cost of a hot water repair or replacement

Hot water is the one job where a range published online tells you very little, because two houses with the same broken system can be thousands apart. What actually moves the number:

What changes the price Why it matters
Repair or replace A failed element, thermostat or valve is a fraction of a new system
The type of system Electric storage, gas storage, continuous flow, heat pump and solar sit at very different price points
Where the unit goes Leaving it where it is costs less than relocating it
Electrical and gas work A new circuit, a switchboard upgrade or a gas line change adds to the job
Access A rooftop or internal cupboard unit takes longer to get out than one on a slab outside
Rebates The NSW Energy Savings Scheme and federal small-scale technology certificates can take a substantial amount off a heat pump or solar install

Voyager quotes a fixed price for your specific system before any work starts, so the number you approve is the number you pay. Ring and you’ll get a real figure for your job rather than a band that may have nothing to do with it.

Pipework and valves on a hot water system installed beside a house
Hot water repairs

Hot water systems Voyager works on

Electric, gas, solar and heat pump: both storage tanks and continuous flow (also called instantaneous) units, for suitable systems in homes, businesses and strata properties.

Tank capacity matters when you’re deciding between repair and replacement: a 125-litre electric storage unit serving a household that has grown since it was installed will keep running out whatever you do to it, and that’s a sizing problem rather than a fault. Where a unit is obsolete or parts are no longer available, that’s identified up front rather than after a wasted callout.

A gas continuous-flow hot water unit mounted on an exterior wall
Hot water repairs

How a hot water repair runs

  1. Describe the symptom

    No hot water at all, running out quickly, leaking, or a temperature problem. Brand and rough age of the unit helps if you have it. A photo of the data plate helps more.

  2. Inspection on site

    The plumber tests the unit and establishes what’s actually failed.

  3. Fixed price, explained first

    Repair and, where relevant, replacement, with the recommendation and the reasoning. Priced by job, not hour.

  4. The work is done and tested

    Including checking the tempering valve is delivering safe temperature at the tap.

  5. Warranty-backed labour

    Subject to Voyager’s current terms and eligibility requirements.

Hot water repairs

Worth knowing

  • Some relief valve discharge is normal. A constant run isn’t, and it’s quietly expensive on your water bill.
  • Most tanks last somewhere in the 8-12 year range depending on type, water and maintenance. If yours is past that and has started misbehaving, plan for replacement rather than being surprised by it.
  • Tempering valves have a service life of about five years. If your system is older than that and shower temperature has started wandering, the valve is a common culprit: a much smaller job than a new system.
  • A hot water unit in a roof space or on an upper level is worth attending to promptly when it starts leaking: the damage path runs through your ceiling.
  • In a strata building, hot water may be a shared system. Voyager works with strata managers across the North Shore and can report on what was found.
Solar hot water collector tubes on a tiled roof
Hot water repairs

Frequently asked questions

I’ve got no hot water at all. What should I check first?

On an electric system, check whether the circuit has tripped at the switchboard. On gas, check whether the pilot light is out. If either has happened once, resetting it is reasonable; if it keeps happening, something is failing and it needs looking at rather than resetting again.

Can you come out today?

Often, yes. Voyager also runs 24/7 for units that are leaking heavily or failing unsafely.

How long does a hot water system last?

Commonly 8-12 years depending on the type of system, local water and whether it’s been maintained. Some go longer. Once a unit is past that range, repeated faults usually signal the tank rather than the part.

Is water pooling under my hot water system serious?

Some discharge from the relief valve is normal. Water pooling under the unit itself, or a constant run from the valve, isn’t, and a corroded tank tends to go from weeping to failing without much warning. Worth getting looked at.

Do you replace as well as repair?

Yes, for suitable systems. Where replacement is the better value, you’ll be told why, along with what the repair would have cost.

What does replacing a hot water system cost?

It depends far more on the system than on the labour, so we quote it rather than publish a band. The biggest factors are which type you replace it with, whether it stays where it is, and whether any electrical or gas work is needed. Heat pump and solar installs also attract rebates that change the final figure. Voyager gives you a fixed price for your specific job before anything is agreed.

Should the hot water be scalding at the tap?

No. A tempering valve should be limiting the temperature at bathroom outlets. If your hot water has become dangerously hot, that valve may have failed, worth attending to, particularly with children or older people in the house.

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Page reviewed and updated 2 October 2026