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Hot water replacement in Melbourne
Replacing a hot water system is the plumbing job Melbourne asks the price of most. The choice turns on the household's size, the space, and the gas rule that changes on 1 March 2027.
Hot water replacement
Choosing the new system
Electric storage
The simplest swap where an electric tank is there now. Running costs depend on the tariff.
Heat pump
Electric, but far cheaper to run than a plain electric tank, and the one most rebates are for.
Gas
Gas storage or continuous flow, in an existing home only until 1 March 2027 unless an exemption applies.
Size
Tank size follows the number of people in the house, so the plumber asks before recommending one.
What it costs: hot water replacement cost
From the job
Hot water units Plumb & Co has installed
Who does the work
Plumb & Co, the plumbers behind every job
Plumb & Co's work has featured on The Block, and its commercial jobs include tenancy fit-outs at Forest Hill Chase, work for Hutchinson Builders, Otto Construction and Power Partners, TGI Fridays, the Royal Melbourne Show and buildings on Collins Street.
Great result in an urgent situation. Jayden did a terrific job. Walked through the solution and good attention to detail. Thanks
Clay LattaReview of Plumb & Co on Google, These guys came to do a hot water service for me that burst. They were out on the same day with a supply and install. Very clean and professional!
Saydoun DiabReview of Plumb & Co on Google, Called up this company to unblock my sink, within the same day they were out here with bright smiles on there faces and eager to do the job. Didn’t take them long at all and have not had an issue with my sink since. Would definitly recommend!!
Mikey SpiteriReview of Plumb & Co on Google, I would highly recommend Michael and his team at Plumb&Co. They are extremely reliable, efficient, friendly and competitively priced. Michael and the team are very knowledgeable and keeps his workspace very tidy. I will definitely be contacting them again for future work. Thanks Plumb&Co
Marisa CastelloReview of Plumb & Co on Google,
- Plumb & Co's Google rating, from 28 reviews
- 4.9
- Google Business Profile, as at 4 November 2026
- Plumb & Co's aim for reaching an urgent call
- 2 hours
- Plumb & Co's work has featured on the show
- The Block
How it works
From the first message to a plumber on site
One message or call, and the job goes to the plumbing company that does it.
Tell us what has gone wrong
What is blocked, burst or leaking, where it is, and whether water or sewage is still running.
The job goes to Plumb & Co
Your details go straight to Plumb & Co, a Melbourne plumbing company, and they arrange a plumber to come out.
The cause is found first
Whose pipe it is, yours or the water corporation's, is worked out before anything else, with a camera where the cause is hidden.
A price before the work
Nothing is started until you have the price for the job and have said yes to it.
Replacement questions
Rules, rebates and timing
What changes on 1 March 2027?
From then, the Victorian Government says a gas water heater in an existing home that needs replacing cannot be replaced with another mains gas unit and must go electric, with a range of exemptions where that is impractical or costly.
Will a rebate lower the price?
For a heat pump it may. Solar Victoria and Victorian Energy Upgrades each have their own eligibility, so no single after-rebate price is quoted here.
What does a new system cost?
The free hot water replacement cost calculator shows typical Melbourne market prices for each type. The plumber prices your job on site.
