Hot Water System Installation Sydney - Gas, Electric and Continuous Flow
Need a new hot water system, a bigger one, or the old one moved? Our licensed plumbers install electric and gas storage tanks and continuous flow units across Sydney, with the price agreed before any work starts.
- $0 call-out fee*No charge just to come and look
- Fixed Price QuotesUpfront pricing before work starts
- Aussie owned & operatedFamily-owned in Sydney since 2010
- Lifetime guaranteeIf our work fails, we fix it
Free quotes · Licensed & insured · Lic #306457C
*No call-out fee during business hours, Monday to Friday 7am to 4pm. Mr Splash VIP lifetime members pay no call-out fee at any time. After-hours and weekend call-outs may attract a fee at our discretion, and we will always confirm it with you before we attend.
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The Hot Water Systems We Install
Electric and gas tanks and continuous flow units, installed by licensed plumbers at a price agreed before any work starts.
Electric Storage Tanks
A new electric hot water system sized for the household, fitted outside against a wall or indoors in a safe tray where the spot needs one.
Tempering Valves
Fitted with new and replacement systems so the hot water reaching the bathroom is limited to 50 degrees, while the tank still stores it hot.
Moving A Hot Water System
The system moved to a better spot, with the water and gas lines extended to where it now sits and the relief valve drain run properly.
Flues For Indoor Gas Units
An indoor gas hot water system needs a flue to the outside, and where it goes through the roof we seal and flash it so the roof stays watertight.
How Urgent Is Your New Hot Water System?
Three situations that lead to a new hot water system, from most to least urgent.
Old System Leaking
Turn off the cold water valve going into the system and switch off its power or gas. A tank leaking from its body cannot be repaired, so call us for a replacement price.
Repairs Keep Adding Up
When the same system keeps breaking down, the money usually goes further on a new one. Ask for a fixed price on both a repair and a new system before you decide.
Renovating Or Adding A Bathroom
Get the new system priced before the walls and benches are finished, so the pipes and gas can go where they need to.
How We Install A Hot Water System
Hot water system installation Sydney wide: choose the right system, agree the price, then install it and test it.
Licensed plumbersChoose The Right System
We look at the space, the gas and power supply and how much hot water the household uses, then tell you whether a tank or an instant hot water unit suits best.
Fixed price firstAgree One Fixed Price
One price covers the new system, the valves, taking out the old unit and the installation, before any work starts.
Tested before we leaveInstall It And Test It
The system is connected, filled and heated, every joint is checked for leaks, and we run the hot taps before we go.
Free Call-Out, Free Quote, Fixed Price
Nothing to pay until you say yes. Here is how it works.
We come out, no call-out fee*
A licensed plumber comes to you, looks at the problem and tells you exactly what is going on. No charge for the visit during business hours.*
You get a fixed-price quote, free
Before any work starts you get the full price in writing. Not an hourly rate, not an estimate that grows once we are in the walls.
You only pay when you say yes
Accept the quote and we start. The price you accepted is the price you pay, however long the job takes. What you see is what you get.
*No call-out fee during business hours, Monday to Friday 7am to 4pm. Mr Splash VIP lifetime members pay no call-out fee at any time. After-hours and weekend call-outs may attract a fee at our discretion, and we will always confirm it with you before we attend.
Video Testimonials
New Hot Water, Price Agreed First.
Tell us what system you have now and what you need, and a licensed plumber will call you straight back with a time and a fixed price.
- Fixed Price QuotesOnce we have seen where the new system is going, you get one price for the whole installation. It holds even when the pipes or gas take more work to reach the spot than it first looked.
- No Call-Out Fee*Getting a licensed plumber out to look at the space and the supply costs you nothing during business hours. Nothing is charged for the installation until you have said yes to the price.
- Pay Later At 0%A new hot water system is a big spend to find in one go. Spread the fixed price over a 0% interest payment plan and get the new system in now.
*Terms and conditions apply.
Get a Free Hot Water System Installation Quote
60 seconds · no obligation
Hot Water System Installation FAQs
Answer:
It depends on the type and size of the system, whether it runs on gas or electricity, and whether it goes in the same spot or needs new pipes or gas run to it. We look first, then give you one fixed price to approve before any work starts. There is nothing to pay just for us to come and look during business hours.
Answer:
Not in NSW. Connecting a hot water system to the water supply is licensed plumbing work, a gas connection has to be done by a licensed gas fitter, and the electrical connection is licensed electrical work.
Answer:
A straight swap in the same spot is often finished the same day where we can. Moving the system, switching from electric to gas, or running new pipes takes longer, and we tell you how long before we start.
Answer:
It comes down to how many people use hot water at the same time, not just the number of bedrooms. A couple can run on a small tank, while a family with two bathrooms needs a bigger tank or a continuous flow unit. We size it with you before we quote.
Answer:
If the house has natural gas, a gas tank or a continuous flow unit is an option. Without gas, an electric tank is the simplest choice. Solar and heat pump systems cost more to install but use less energy to run. We talk through what suits your house before you choose.
Answer:
Yes. When we install a new system, disconnecting and taking away the old one is part of the fixed price.
Answer:
In NSW, a new or replacement hot water installation must deliver water to bathrooms at no more than 50 degrees, and a tempering valve is the usual way to do that. We fit one as part of the installation where it is needed.
Answer:
Yes. We move the system, extend the water and gas lines to the new spot and run the relief valve drain so it lets out water safely. You get one fixed price for the move before any work starts.
Guides That Answer the Question First
Written by our licensed team from real Sydney jobs: what it usually costs, what to check yourself, and when to call. Every price is a published market range, never a sales pitch.
Hot Water System Prices Sydney 2026
Market ranges by system type, a calculator, and repair or replace.
Read the guideNo Hot Water? What to Check First
Five checks that find the cause in ten minutes, system by system.
Hot Water System Leaking
Where the water comes from tells you if it is a valve, a fitting or the tank.
Tempering Valve Explained
Why the tank stores at 60 degrees and the bathroom gets 50, and when it fails.
All our guides are on the Mr Splash blog.
Recent Hot Water System Installation Jobs Across Sydney
Suburbs where our plumbers have recently installed, upgraded or moved hot water systems.
Upfront fixed pricing quoted before any work starts. Terms and conditions apply.
