0423 368 311 
nexgenplumbingandgasfitting@gmail.com
Hot Water System Replacement Sunbury
When your hot water system has reached the end of its life, we handle the full swap-out — removal of the old unit, supply and installation of the new system, and compliance certification where required. Get a free, honest quote today.
Nexgen Plumbing & Gasfitting rated 5/5
Replacing a Hot Water System Without Knowing What You're Getting Into
When a system fails completely — or the repair bill is close to the cost of a new unit — replacement is the right move. But most people have never bought a hot water system before. There are too many system types, too many brands, and no easy way to know what size you actually need.
And when you're without hot water, you're under pressure to make a decision quickly. That's exactly when you're most likely to end up with the wrong system, or pay more than you should.
At Nexgen Plumbing & Gasfitting, we take that pressure off. We help you choose the right system for your household, handle the full swap-out in a single visit, and leave you with everything working correctly before we go.
Get A Free QuoteHow We Handle Hot Water System Replacements
Before recommending anything, we ask about your household size, hot water usage, whether you have gas connected, and your energy priorities. We work across electric storage, gas storage, heat pump, and continuous flow systems — and we give you a straight rundown of which suits your situation and what each option will cost. No upsell, just the right fit.
Once you've chosen a system, we handle everything. We disconnect and remove the old unit, install the new system, test it, and leave the area clean. Most like-for-like replacements are done in a single visit. Where gas work is involved, a compliance certificate is issued on completion as required by Victorian regulations.
If you're switching to a heat pump, Victorian government rebates may apply and reduce the upfront cost significantly. We advise on eligibility as part of the quoting process. Not sure if you need a replacement at all? See our hot water repair service.
Trusted By Home & Business Owners Across Melbourne
- Minh D Home Owner
We needed some pit drains installed around the backyard for better drainage system, a new bathroom vanities done and new fridge to be connected to a water line . Ben did a fantastic job, was very professional at what he does and would highly recommend anyone who is after a reliable plumber.
Google - Erhan K Home Owner
If you're in Melbourne and need reliable plumbing work like toilet replacements, basin installs, or bathroom renos, these guys are the real deal. Honest, skilled, and genuinely care about doing a great job. I'll definitely be calling them again and have already recommended them to mates.
Google - Damian G Home Owner
We had an emergency that required a plumber straight away and Ben was nothing short of a live saver he analysed the issue was able to come up with an immediate solution and therefore fixed the issue in very quick time
Google
Speak With Your Local Plumber Today
If you need a repair, a renovation quote, or have a plumbing emergency, we are ready to help. Contact us today to discuss your project and get a free quote
- Phone 0423 368 311
- Address Sunbury
Why Sunbury Homeowners Choose Nexgen for Hot Water Replacements
We are a small local business based in Sunbury. That means when you call, you speak directly with a licensed plumber — not a sales consultant who passes your details along and follows up with a quote two days later.
We carry stock of common system types and can often complete a replacement on the same day or next day. You get a straight recommendation on the right system, a clear price before we start, and a proper installation that meets Victorian plumbing standards.
- You speak directly with a licensed plumber, not a call centre
- Honest advice on which system suits your household — no upsell
- Full swap-out completed in a single visit in most cases
- Compliance certificates issued for all gas work
- Advice on Victorian government rebates for heat pump systems
Frequently Asked Questions
If your system is over ten years old and has a significant fault, or if the repair cost is close to the price of a new unit, replacement usually makes more sense. We assess the full system and give you an honest recommendation either way — we don't push replacements if a repair will do the job.
It depends on the number of people in your household and your daily hot water use. As a guide, 1–2 people typically need a 125–160 litre tank; a family of 4 or more will usually need 250–315 litres, or a continuous flow system. We advise on the right size as part of every quote.
In many cases, yes. We carry stock of common electric and gas storage systems. If your unit has failed and you need a replacement quickly, call us and we will let you know what we can organise based on current stock and availability.
We install electric storage, gas storage, heat pump, and continuous flow systems. We can advise on which suits your home, energy setup, and budget as part of the quoting process.
Yes, Victorian government rebates are available for eligible households upgrading to a heat pump hot water system. Eligibility depends on your current system and circumstances. We advise on what may apply as part of the quoting process.
Most like-for-like replacements are completed in a few hours. A standard electric or gas storage swap is typically a half-day job. Heat pump installations can take a little longer depending on location and any additional electrical work required.
Yes. All gas work is completed by a licensed gasfitter and a compliance certificate is issued on completion, as required by Victorian regulations.
We service Sunbury and the surrounding north west suburbs of Melbourne, including Diggers Rest, Bulla, Gisborne, Riddells Creek, Lancefield, and Macedon. Call us to confirm availability for your location.