If you’re replacing an old gas hot water system in Werribee or anywhere across Melbourne’s west, there’s one question worth asking before you book anyone: will I get a compliance certificate?
Under the Building Act 1993, any plumbing work — including hot water system replacements — legally requires a Compliance Certificate lodged with the Building and Plumbing Commission (BPC). Yet plenty of installs happen without one, leaving homeowners with no proof the work was done to standard, and no cover if something goes wrong later.
Here’s what a fully compliant job looks like, using a recent Werribee installation as an example.
The Job: Gas Storage System to Heat Pump
A residential property in Werribee had an ageing gas instantaneous hot water system that had reached the end of its life. Our licensed technician:
- Disconnected and capped the existing gas system safely
- Installed a new Neopower heat pump hot water unit, sized for the household’s needs
- Tested and commissioned the new system to confirm correct operation
- Rendered the old gas unit inoperable and removed it for disposal
Every step was carried out by a BPC-licensed plumber, and the job was lodged as a formal Compliance Certificate — the same certificate the property owner now holds as legal proof of compliant work.
Why the Paperwork Matters More Than You’d Think
A Compliance Certificate isn’t just admin. It’s your evidence that:
- The work meets Part 12A of the Building Act 1993
- The plumbing work is insured — so if a defect shows up later, you’re covered
- The job is traceable via a unique Compliance Cert Number and PIN, searchable through the BPC
- A licensed practitioner, not an unlicensed installer, did the work
Homeowners should keep this certificate for six years as proof of cover. If a business can’t provide one, that’s a red flag.
Certificate of Destruction: What Happens to Your Old Hot Water Unit
This is the part most companies skip — and most customers never ask about. When we remove an old hot water system, it doesn’t go to landfill. It’s sent to a licensed metal recycling facility, where we receive a Certificate of Destruction confirming the unit was properly dismantled and its materials recovered.
It’s a small extra step, but it means every job we complete is accounted for from installation to disposal.
Considering a Heat Pump Hot Water System?
Heat pump systems like the Neopower unit installed in this job use significantly less energy than gas or standard electric storage systems, which typically means lower running costs over time. They run entirely on electricity — making them compatible with rooftop solar — and eliminate the ongoing cost of a gas connection. If your gas hot water system is ageing or you’re exploring more efficient options, our licensed team can assess your property and walk you through what’s involved.
Get a fully compliant, fully documented hot water installation — book a free assessment with Green Electric Solutions today.
Frequently Asked Questions — Gas to Heat Pump Conversion in Werribee
Is a plumbing compliance certificate legally required when replacing a gas hot water system in Werribee?
Yes. Under Part 12A of the Building Act 1993, all plumbing work — including hot water system replacements — must be performed by a BPC-licensed plumber and a formal Compliance Certificate lodged with the Building and Plumbing Commission. This applies across Victoria including Werribee, Hoppers Crossing, Wyndham Vale, and surrounding suburbs. Any installer who cannot provide a Compliance Certificate is not operating legally.
What VEU rebates are available for a gas-to-heat pump hot water conversion in Werribee?
Gas-to-heat pump conversions in Werribee are eligible under the Victorian Energy Upgrades (VEU) program, which provides Victorian Energy Efficiency Certificates (VEECs) that reduce the upfront cost of installation. The rebate amount depends on the system installed and the property’s current energy source. As a VEU Approved Provider, Green Electric Solutions applies the rebate directly — no government paperwork required from the homeowner.
How long do I need to keep my plumbing compliance certificate after a hot water installation?
Victorian homeowners should retain their Compliance Certificate for a minimum of six years. The certificate confirms the work is covered by statutory insurance and was completed to the standard required under the Building Act 1993. It is traceable through the BPC using the unique Compliance Cert Number and PIN provided at the time of lodgement.
What is a Neopower heat pump and how does it compare to a gas instantaneous system?
The Neopower is a heat pump hot water unit that extracts ambient heat from the air to produce hot water, rather than burning gas. Heat pump systems are typically around three times more energy-efficient than gas storage systems, which translates to lower ongoing running costs. They operate entirely on electricity, making them compatible with rooftop solar and removing the need for an ongoing gas supply connection.
Does Green Electric Solutions provide documentation when removing old gas hot water systems?
Yes. Every gas unit removed by GES is sent to a licensed metal recycling facility and a Certificate of Destruction is issued confirming the unit was properly dismantled and its materials recovered responsibly. This documentation is provided alongside the Compliance Certificate, giving the property owner a complete and verifiable paper trail from installation through to disposal.
Recent Heat Pump Hot Water Upgrades Across Melbourne
- 320L Neopower Heat Pump Hot Water Upgrade in Werribee — VEU Rebate Applied
- 320L NeoPower Heat Pump Hot Water Upgrade in Hillside VIC — $1,234 Government Rebate
- Mickleham Homeowner Saved $1,684 with a 320L Heat Pump Upgrade
- Point Cook Homeowner Saved $2,134 on a 320L Heat Pump
- 320L NeoPower Heat Pump Installation in Roxburgh Park
3 thoughts on “Gas to Heat Pump Hot Water Conversion in Werribee: What a Fully Compliant Job Actually Looks Like”