Why Heat Pumps Are Quietly Replacing Gas Hot Water Across Victoria
Mathew Cole • October 4, 2025

Why Heat Pumps Are Quietly Replacing Gas Hot Water Across Victoria

If you’ve noticed more people talking about heat pumps lately, there’s a good reason  they’re fast becoming one of the smartest upgrades for homes across Victoria.


At O’Brien Electrical & Plumbing Warrnambool, we’ve been fitting more Emerald Energy heat pumps this year than ever before. Customers are starting to realise that getting off gas isn’t just about being “green” it’s about making your home more efficient, cheaper to run, and future-proof for the years ahead.


The simple reason people are switching

For years, most homes in Warrnambool, Terang, and Koroit have run gas hot-water units without a second thought. However, gas prices have jumped, and the state government has made it clear that new homes will be electric-only moving forward.

That’s where heat pumps come in. Instead of burning gas to heat water, they extract heat from the air and use it to warm your tank  essentially a reverse air conditioner. It means you’re not paying to create heat you’re just moving it.

That’s why they’re up to 70% cheaper to run than traditional systems.

Emerald Energy – an Aussie brand built for Aussie conditions

We work closely with Emerald Energy, an Australian company that designs heat pumps specifically tailored to our local climate.

 Their 270/320-litre system is one of the most efficient on the market  quiet, reliable, and simple to service.

A few reasons we like them:

  • They perform well even in cold South-West Victorian mornings.
  • They’re eligible for Victorian government rebates, making them even more affordable.
  • They connect easily with solar power systems using your own free energy to heat your water.

We’ve installed dozens of them around Warrnambool, and the feedback’s been the same every time: “It just works.”

The rebate makes it an easy decision

Right now, homeowners can access up to $1000 off the cost of a heat pump through the Solar Victoria Hot Water Rebate — plus potential VEEC savings on top of that.

For most households, this means you can replace an old gas or electric storage unit and save hundreds each year on running costs.

We handle the rebate application from start to finish, so you don’t have to chase paperwork or wonder if you qualify.

Pair it with solar and keep your energy in your hands.

The real magic happens when you pair your heat pump with solar.

During the day, your panels can power the heat pump, meaning you can heat your water for free.

Add a battery system and you’ve got a complete cycle of energy independence:

  • Solar creates the energy
  • The battery stores it
  • The heat pump uses it efficiently

That’s what we call a smart energy setup and it’s what we’re building at our new Energy Hub in Terang every day.

Local homes leading the way.

We recently replaced an old gas storage unit in Terang with an Emerald Energy 320 heat pump. The customer’s gas bill dropped by more than 30% the first month and that was before they added solar.

In Terang, another family decided to go all-electric with solar, a battery, and a heat pump. Their house now runs almost entirely off their own energy. No gas bills, no surprises, just steady savings and comfort.

That’s the future we’re seeing right across the region practical, proven systems that give control back to homeowners.

The takeaway

If you’re still running a gas hot-water system, now’s the time to look at your options.

With rebates available, energy costs rising, and new rules coming into effect for gas connections, it makes sense to make the move sooner rather than later.

We’re happy to help you determine which system suits your home, identify the rebates you qualify for, and maximise the benefits of your investment.

Pop into the Energy Hub in Terang or into our Warrnambool office for a look at the Emerald Energy range, or give us a call at O’Brien Electrical & Plumbing Warrnambool.

Let’s work out the best way to get your home running smarter  and leave those gas bills behind for good.



O’Brien Electrical & Plumbing Warrnambool installing rooftop solar panels on a local home to help
By Mathew Cole October 23, 2025
Go solar with O’Brien Electrical & Plumbing Warrnambool. Expert solar and battery installations with Victorian rebates to lower your energy bills.
Heat pump hot water rebate Victoria – O’Brien Electrical & Plumbing installation
October 4, 2025
Warrnambool & Terang homes are going renewable. See how O’Brien Electrical & Plumbing can help you claim rebates and get off gas in 2025.
September 17, 2025
THE heart of Winslow is beating brighter (and warmer) than ever, with the much-loved Mechanics Institute Hall given a fresh lease on life. Thanks to the generosity of local businesses, suppliers, and tradespeople, the hall has undergone a major makeover - swapping icy winters for cosy comfort and year-round use. In just one day, a team of 13 from O’Brien Electrical and Plumbing Warrnambool rolled up their sleeves to transform the space. Four brand-new split systems, a heat pump hot water unit, and a full LED lighting upgrade now mean the hall is ready to welcome the community back in style. The works were supported by generous contributions from suppliers and partners, including:
September 11, 2025
"Join O'Brien Electrical & Plumbing Warrnambool as an HVAC Installer. Full-time role with sign-on bonus, great pay, and profit share opportunity.
trade-assistant-job-warrnambool-obrien-electrical-plumbing-aircon-solar-battery-installs-career
By Mathew Cole September 11, 2025
"Join O'Brien Electrical & Plumbing Warrnambool as a Trade Assistant. Gain hands-on experience in aircon, solar & battery installs with career growth opportunities."
By Mathew Cole September 11, 2025
Solar & Battery Installer – Team Leader O'Brien Electrical & Plumbing Warrnambool is looking for an experienced Solar and Battery Installer to lead our installation team. This full-time role offers $100,000 per annum (or $50 per hour) plus a sign-on bonus , with the chance to work for a trusted local business delivering high-quality renewable energy solutions across South West Victoria. What’s on offer: Competitive pay – $100k salary or $50/hr Attractive sign-on bonus Secure, full-time position Leadership opportunity managing a solar install team Variety of work across solar PV and battery storage systems What we’re looking for: Current SAA accreditation Proven experience in solar and battery installations Strong leadership and communication skills Commitment to safety, quality, and customer satisfaction If you’re ready to step up, lead a skilled team, and grow with a business that values professionalism and results, we’d love to hear from you.
By Mathew Cole September 11, 2025
A Grade Electrician – Join Our Team O'Brien Electrical & Plumbing Warrnambool is seeking a qualified A Grade Electrician to join our growing team. This is a full-time role offering competitive pay, steady work, and the chance to be part of a trusted local business that’s well respected across South West Victoria. What’s on offer: Great pay and secure full-time role Variety of work across residential, commercial, solar, and air conditioning projects Supportive team culture with opportunities to develop your skills Be part of a business that values professionalism, quality, and customer service What we’re looking for: Current A Grade electrical licence Strong technical knowledge and problem-solving ability Ability to work independently and as part of a team Reliable, safety-focused, and committed to delivering top-quality work This is a fantastic opportunity to join a business that’s growing and investing in renewable energy, HVAC, and electrical services across the region.
A panel and solar battery installed on a wall.
August 19, 2025
Thinking about a solar battery in Terang, VIC? Click to discover why it’s trending in this blog from O’Brien Electrical & Plumbing Warrnambool.
Side view of a plumber in red overalls fixing a kitchen faucet.
August 5, 2025
Discover why hiring a licenced plumber in Warrnambool, VIC, is needed for your home. Call O'Brien Electrical & Plumbing at (03) 5562 9020 for expert services.