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"Great work job done as expected! Recommend to everyone "
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"Great work! Definitely recommend!"
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"Our go to plumber now, Dario has done a number of things for us incl. boiler installation, mixer & shower heads replacem..."
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"So good - on time professional , well priced "
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"Efficient and great communication! job is done within a hour from posting!"
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"Andrew was amazing, he helped us remove a bunch of rubbish while we were moving. Communicated when he was coming and jus..."
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"Diego was punctual, helpful and showed patience and initiative. Thank you Diego!"
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Recent Hot Water System Installation & Repair reviews in Sydney

Thank you Mark!
Plumber needed to fix hot water boiler tank
$150

Daniel was great. He went above and beyond to sort out the issues. On top of that he is a very nice guy, very efficient and very clean.
Fix a toilet and check another tap for on and off hot water
$150

Mike worked very quickly to get the job sorted - thanks!
Connect washing machine to hot water tap
$60

Daniel arrived on time and did the job without any trouble. Very neat and tidy. Explained what he did. Very happy with his work.
Plumbing (control between hot water & water)
$100

Thanks so much
Plumber for wallacia (Penrith) hook up hot water
$120

Hi Ben did a good job Getty g my system up and running could not fault him and would recommend him And did not charge me a fortune for it . Thanks again
Fix a hot water system
$200
What's the average cost of a hot water system installer in Sydney
$120 - $300
low
$120
median
$170
high
$300
Average reviews for Hot Water System Installation & Repair Services in Sydney
based on 51 reviews
4.88
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What do hot water system installation services include?
Hot water system installation services include all the activities necessary to put a reliable, safe hot water system in your home. This involves installing an unvented hot water system, inspecting the installation area, preparing materials, installing the cylinder or tank, then making the needed connections. After the installation, your plumber can test the system for flaws and address them as needed.
Inspecting installation area
Your water heater installation begins with a thorough inspection of the spot that will house the tank and its components. Your plumber makes sure that the floor is robust enough to support the cylinder's weight and complies with established building codes and safety rules and regulations. If the allotted space is deemed insufficient for the cylinder, your plumber can help you look for an alternative spot for the unvented cylinder service.
Preparing for installation
Your plumber makes the necessary preparations for the hot water cylinder installation. If necessary, some plumbers may offer to make an improvised platform of sturdy materials to support the tank's weight. Otherwise, you can hire a Tasker to handle all your carpentry needs.
When appropriate, your hired plumber shuts off the power, gas, and water supply before starting the job. They can take all the necessary measurements to determine the right amount of materials, then cuts and bends wires and pipes to the appropriate lengths and widths. Your plumber may also cut holes into walls or floors as needed to allow pipes or wires to run through.
Installing the cylinder
Once the cylinder's space is ready, your plumber can proceed with the unvented hot water cylinder installation. They can place the cylinder or tank onto its designated space and position. Your plumber takes care not to damage any of the components of the vented hot water cylinder or other pipes and wires in its surroundings.
Installing components and pipes
After the cylinder is in position, your specialist proceeds with attaching the appropriate pipes, wires and components like the Temperature and Pressure Release valve, expansion vessel, immersion heater, and any other pipes and valves. As with all other stages of the unvented cylinder installation, they use appropriate materials and techniques that are compliant with state safety and building regulations and industry best practices.
Testing the system
Your hired plumber tests the system after completing the installation. They check that each tap and shower head provides hot water on demand and flows with consistent pressure. Should variations in temperature or pressure arise, your plumber can troubleshoot the system and do the appropriate fixes.
They repeat this process until the hot water system works without any issues. And now that your home has hot water running through your taps, tubs, and showers, why not ensure greater warmth and comfort in every room of your home? On Airtasker, you can also hire an insulation installer who can help you cut down on bills and achieve year-round comfort.
Recent Hot Water System Installation & Repair tasks in Sydney
A licensed plumber to investigate recurring hot water issues
$220
Haymarket NSW, Australia
5th Oct 2025
I need a licensed plumber with experience in apartment buildings and hot water systems to investigate recurring hot water issues in my bathroom. Issue: In the bathroom (shower and sink only), water temperature suddenly surges to excessively hot even when the mixer is set at a normal range. Once this happens, adjusting the handle does not stabilise the temperature. At the same time, there is a distinct mechanical noise from above, like a valve snapping shut (not the usual “water hammer”). Kitchen hot water is not in use, but no irregularities noticed there. What I need checked: Inspect my tempering valve to confirm if it is working correctly. Assess whether the issue may be related to shared risers or building-level hot water components. Provide a clear written report of findings so I can raise this with building management if needed. Skills required: Licensed plumber Experience with hot water systems and tempering valves Familiarity with apartment building plumbing (shared risers/central hot water)
Fix bidet in toilets, install dishwasher pipe and check hot water
$100
Marrickville, New South Wales
3rd Oct 2025
Need to install 2 bidets in toilet Bidets will be supplied, only need help to install. Fix dishwasher pipe to sink tap Check hot water supply to sink tap
Solar hot water evacuated tube repair or replace plumber
$150
Glebe NSW, Australia
30th Sep 2025
We have a gas boosted solar system, evacuated tube solar. The system needs an inspection to work out what’s going on. 1. The solar component seems like it might not be working and continuously on gas boost for hot water? 2. We are getting an attic room installed. The insulated pipes from the evacuated tubes run across the roof space, they need to be placed down at joist level. 3.there is an old gravity cylinder in the roof space. Does the water reticulate through that as part of the current system. If so, it needs to be bypassed, and the tank drained, so the tank can be cut up and removed.
Fix Hot Water Heater
$100
Hillsdale NSW, Australia
27th Sep 2025
My water heating unit is leaking - would like to work out if it can be fixed or in need of a whole new unit.
There is no hot water in my apartment
$30
City of Rockdale NSW, Australia
23rd Sep 2025
There is no hot water in the bathroom ,kitchen ,the laundry room
Replace and install Dux 50L hot water system
$600
Ultimo NSW 2007, Australia
15th Sep 2025
Current Dux 50L system leaking from top center. Assume it can’t be repaired so looking for replacement. Existing tank looks like it is connected to electrical line directly without plug.
Dispose & install new electrical hot water
$100
Redfern NSW, Australia
19th Aug 2025
Dispose of existing hot water tank, install new unit, and fix leaking tap under kitchen sink.
Check on hot water system
$100
Newtown NSW, Australia
12th Aug 2025
The hot water is coming out steadily Luke warm- not hot. Hot water tap only ! It’s a Rinnai system


Really helpful, punctual and friendly
No hot water
$300
Alexandria NSW, Australia
4th Aug 2025
My 1-bedroom unit lost hot water. The reason appears to be the thermostat mixing valve. I will pay $300 for parts and labor to replace the TMV
Inspect hot water heater
$100
Rushcutters Bay NSW 2011, Australia
1st Aug 2025
Inspect a hot water heater to determine if it needs to be replaced or it should be fixed. It is currently not working. The power supply has recently been tested a few months ago, when a number of internal cables were replaced. If it needs either, to then provide a quote for the repair or replacement. It is an Aquamax 80L - of unknown age, looks in good condition. When I rang the company on the sticker they said likely > 10 years old and may be better to just replace.


Dario was a great help ! Highly recommend.
Check the issue of Rinai hot water system
$80
Zetland NSW, Australia
21st Jul 2025
Currently the hot water system is not working and it’s 2 years new. If u know the product well, I would like to hire u to evaluate and identify the issue on site.
Electric hot water tank service
$80
Surry Hills NSW, Australia
8th Jul 2025
Electric hot water heater (47L) constantly using ~1KW per hour even when not in use - property uninhabited. Switched HW fuse off at around 12:20am and 95% of energy use dropped. Unsure how old the unit is but maybe needs a service. Projected cost per year is $2.5-3k for a small 47L unit is unacceptable . Property is single level hot water supply only running to bathroom, kitchen/ laundry (all within 5 metres pipeline of each other)from outside kitchen window so likely some heat leak within that container area or just faulty unit. Don’t want to buy new unit just yet to see if old unit can be serviced / it is an issue with heat loss in the pipes (so new unit won’t solve.)
Plumber needed to fix blocked drain and hot water tap
$150
Marrickville, New South Wales
2nd Jul 2025
Plumber needed to fix blocked drain in bathroom basin and shower and connect hot water tap in laundry basin


Efficient and lovely
Plumbing - Join 1/2 inch copper pipes on hot water system via brazing
$150
Newtown NSW, Australia
23rd Jun 2025
Replace temporing valve with direct 1/2 copper pipe. Will require brazing several joints. I have required copper joints if helpful. Bathroom has a separate valve already, so is compliant. Would suit apprentice plumber.


Amazing work. Quick and professional.
Replace kitchen sink hot water hose connection
$100
Potts Point NSW, Australia
15th Jun 2025
The hot water hose connection to the kitchen sink mixer has frayed and is leaking, needs to be replaced


Thank you so much for coming back and organising new tapware
Emergency plumber to fix lack of hot water Sydney CBD apartment
$5
Sydney NSW, Australia
15th Jun 2025
Hot water just went out in my apartment in Town Hall. I’m after a plumber to fix this now
Hot water service and fix
$200
Darlinghurst NSW 2010, Australia
9th Jun 2025
Service my electric hot water 50L Hot water take ages to come out and is slightly leaking from a valve. Installed in 2017
Bain marie hot water bath fix
$150
Sydney NSW, Australia
6th Jun 2025
Hot food display water bath is no longer heating up. Need someone examine and fix
Kitchen tap under sink leaking and hot water flow issues
$200
Redfern NSW, Australia
23rd Apr 2025
hot water tap under kitchen sink leaks when turned to on position. Also, hot water only runs if I'm running hot water through bathroom first. I had to disconnect the dishwasher as it doesn't run without the hot water flow - if we can't get the hot water issue fixed, I'll take the dishwasher out completely and will need your help in capping the outlet (pictured)

fixed everything i needed thank you
Replace hot water cylinder
$350
Sydney Central Business District NSW, Australia
22nd Apr 2025
I need hot water cylinder replaced. I have replacement already. Old hot water cylinder is in ceiling cavity in bathroom.


Diego completed the task with expert knowledge, identifying an issue and solving it on the spot. Would recommend for all Hot water jobs.