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Hot water repairs, Central Coast Hot Water Systems

Licensed plumber & gas fitter · the Central Coast & Lake Macquarie

Hot water repairs and replacements across the Central Coast and Lake Macquarie. When a system fails, we tell you whether it is worth repairing or due for replacement, and the fixed price is agreed before any work starts. We are licensed for both gas and electric hot water: Josh is a licensed plumber and gas fitter on the Central Coast, so a gas unit is fitted and certified without calling in a second trade. No hot water after hours? We are open 24 hours, 7 days.

Request a callback

Get a callback from Josh

Leave a name and number and Josh calls you back, usually the same day. Can't wait? Call 0431 549 178.

What's included

  • Installations, relocations & replacements
  • Fixed price before any work starts
  • Gas storage & continuous-flow units
  • Electric & heat-pump systems
  • Solar hot water
  • Honest repair-vs-replace advice
  • Running-cost & sizing guidance
  • Ongoing maintenance

Running cost matters as much as the price

Water heating is the second-largest share of household energy use in Australia, so what a replacement costs to run every day counts as much as the number on the quote. When we advise on repair or replace, the running-cost difference is part of the advice.

Thermann electric storage on a house wall, tempering valve and relief line fitted, Edgeworth.

Indicative pricing

$1,200–$3,200

A market-typical guide, not a quote. Your exact price for the job is confirmed in writing before any work starts.

See the full price guide

Licensed & insured

Every job is carried out by Josh, a licensed plumber and gas fitter (NSW licence 498220C; Donza Plumbing Pty Ltd, ABN 51 697 209 153), and certified to AS/NZS 3500 plumbing & AS/NZS 5601 gas.

Gas Fitting$20 million public liabilityUpfront quotes

Servicing

On the tools

Before: the pad and connections ready for the new electric storage unit, Merewether.
Before: the pad and connections ready for the new electric storage unit, Merewether.
After: Thermann electric storage on the same pad, valved and connected, Merewether.
After: Thermann electric storage on the same pad, valved and connected, Merewether.
Thermann electric storage on a house wall, tempering valve and relief line fitted, Edgeworth.
Thermann electric storage on a house wall, tempering valve and relief line fitted, Edgeworth.
Twin Thermann 28 commercial continuous-flow units in a plant room
Twin Thermann 28 commercial continuous-flow units in a plant room
Thermann electric storage hot water on a brick house wall
Thermann electric storage hot water on a brick house wall
Rheem heavy-duty electric storage units on a copper manifold
Rheem heavy-duty electric storage units on a copper manifold
Under-bench Thermann storage on a site kitchenette
Under-bench Thermann storage on a site kitchenette
Twenty-year gas storage unit on the wall, before the G-series swap
Twenty-year gas storage unit on the wall, before the G-series swap
Old storage hot water unit on a brick wall, Blue Haven, before the swap
Old storage hot water unit on a brick wall, Blue Haven, before the swap

Before you replace it

Cost, rebates and a 30-second check.

A new tank is not always the next step. Read the cost ranges, the NSW heat-pump rebate rules, why an old unit can still be expensive to run, and use the 30-second check before you decide.

Recent work

At Blue Haven, an old storage hot water unit came out and the new system went in. In Merewether, a new Thermann electric storage unit went on the existing pad, valved and connected. In Edgeworth, a Thermann electric storage unit was fitted to a house wall with its tempering valve and relief line. A bathroom re-arrange at The Entrance included a new hot water service on the same job. Donza Plumbing is a plumber in Mannering Park, and these jobs ran from Blue Haven to Merewether.

How the job runs

What to expect, start to finish.

  1. Quick diagnosis

    A call, a photo, or an on-site look, usually enough to tell repair from replace.

  2. Straight advice

    An honest repair-vs-replace call, with both options costed.

  3. Fixed price first

    The repair or the replacement is priced and agreed before any work starts. We are open 24 hours, 7 days.

  4. Tested & certified

    Gas units finish with the compliance certificate; every system is tested before we leave.

Good to know

Hot Water Systems FAQs

My hot water system still works but it is over 10 years old, should I wait for it to fail?

Most tanks are built to last 8-12 years, so past that point it is really a question of when, not if. Waiting it out usually means the failure happens at the worst time, and a leaking tank can damage flooring or a wall cavity on its way out. If yours is past 10 years, replacing it on your own schedule, rather than an emergency one, is usually the more sensible and often cheaper option once you factor in the damage risk.

Is it worth repairing my hot water system, or should I replace it?

It comes down to age and the fault. A unit under 8 years old with a failed thermostat, element or valve is usually worth repairing, those parts are inexpensive relative to a full system. A tank over 10 years old, or one that is actually leaking, is the honest replace case, repairing a leaking tank just delays the same outcome. We inspect it, quote both options with the running-cost difference, and let you decide.

Can I switch to a different type of hot water system when mine is replaced?

Yes, replacement is the easiest time to change type, for example moving from electric storage to a heat pump for lower running costs, or to gas continuous-flow if you have reticulated gas available. We size the new unit to your household and talk through the upfront cost against the running-cost difference so the choice is a straightforward one, not a guess.

Keep reading

Guides & local pages

Customer feedback

What customers say.

Hot water replacement
My husband spoke with Josh the owner about our hot water service in the afternoon. By the next day it was installed and working. Great service. Great price. Very impressed.
MMichelle DevlinGoogle review
Hot water installation
Highly recommended! Excellent communication and response time. Installation of our hot water system was without delay and, professionally executed by Josh who even cleaned up afterwards - Great price too! Thanks Donza Plumbing Pty Ltd
JJayne GreenwoodGoogle review
Hot water installation
Thanks Josh for the installation of my new hot water system. A neat and extremely professional job. I appreciated your communication, reliability and punctuality. Gladly send more work your way.
KKylie JacksonGoogle review