Hot Water Systems in Marshall
The 3216 postcode, covering Marshall, Belmont, Freshwater Creek, Grovedale, Grovedale East, Highton, Mount Duneed, Wandana Heights and Waurn Ponds and surrounding areas, is home to around 23,884 households. With many households already generating their own clean solar power, many are now looking at how they can make their entire home energy system more efficient, with hot water heating often the logical next step.
With hot water roughly accounting for a quarter of the average home's energy use, switching to an energy-efficient hot water system is one of the biggest opportunities for savings. Across Marshall and the 3216 area, 3,434 homeowners have already switched from older electric storage and gas hot water systems to solar hot water or air-source heat pump systems that draw on clean, renewable power while also claiming the hot water rebates to reduce their hot water heater system cost. These highly-efficient systems not only help cut energy bills but also reduce carbon emissions and improve overall energy independence.
With Marshall's climate delivering an average of 4.2 kWh/m² per day, conditions are ideal for hot water systems and hybrid heat pump systems that harness both sunlight and ambient air temperature to heat water efficiently all year round. When paired with existing rooftop solar power or solar batteries, the result is hot water that costs far less to run and is powered by clean, self-generated energy.
Hot Water Ranking
Postcode 3216
20th
State Wide
42nd
Australia Wide
Hot Water Installation Marshall
Estimated daily energy to heat household water, comparing a resistive electric element with a high-efficiency heat pump. Demand shifts month-to-month using local climate patterns.
Energy Efficient Hot Water & Solar Power Marshall
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterMarshall
Illustrates how a typical 6.6 kW rooftop solar system can offset the daytime energy demand of a COP 5 heat pump hot water unit.
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Heat Pump Hot Water Systems for Marshall
Compare heat pump hot water systems suitable for Marshall's climate. These energy-efficient systems are designed to work in local temperature conditions and can significantly reduce your hot water energy costs.
Community Hot Water Statistics - Marshall, 3216
Hot Water Demographics - Marshall
Based on the Australian Bureau of Statistics 2021 Census (ABS), Marshall has around 23,884 private dwellings, home to approximately 55,474 people. With an average household size of 2.5 people, and around 50 litres of hot water used per person each day in Australia, Marshall households use approximately 125 litres of hot water daily, equating to a massive 3.0 million litres of hot water used across the suburb every single day.
Other census insights reinforce Marshall's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Marshall community is home to 4,754 couple families with children and 1,013 one-parent families, meaning a large proportion of households face substantial hot water demand. With 7,939 homes owned with a mortgage and 7,890 owned outright, many residents also have the homeownership and growing equity that make switching to efficient hot water systems a practical way to lower expenses.
Marshall is converting hot water demand to efficient systems faster than many peers, with 14.4% of dwellings already upgraded.
Hot water systems in Marshall
Across Marshall and the wider 3216 area, more households are swapping old gas and tired electric units for an energy efficient hot water system. With power prices biting and an average household size of around 2.5 people, most homes are using a lot of hot water every day. For owners paying a median mortgage of about $1,733 a month, cutting running costs with a modern hot water system is a simple, practical win.
Marshall’s climate is well suited to efficient hot water. The nearby Geelong Airport weather station records mean daily solar exposure of about 15.1 MJ/m² – roughly 4.2 kWh/m² per day – which is solid for both a solar hot water system and a heat pump hot water system. That sunlight helps a solar hot water heating system pre‑heat your water and boosts the efficiency of heat pump hot water, especially if you already have rooftop solar. With nearly 22,490 dwellings in the postcode and a strong base of owner‑occupied homes, upgrading from older gas or electric hot water to a more efficient option is a logical next step, often delivering substantial annual hot water energy savings for Marshall households.
In Marshall you’ll see a mix of systems: traditional electric hot water system setups, newer heat pump hot water installation jobs on family homes, and roof‑mounted solar hot water installation on larger properties. Many locals are asking about heat pump vs solar hot water, or solar hot water vs electric hot water, to work out what suits their roof space, budget and lifestyle. Brands like Rheem solar hot water and Rinnai solar hot water remain popular, while premium heat pump options such as Sanden heat pump units and Rheem heat pump hot water are increasingly seen as some of the best heat pump hot water system choices in Australia for low running costs.
Typical hot water installation decisions in Marshall revolve around hot water system price, efficiency and noise. A well‑sized heat pump hot water system can be the most efficient hot water system for many all‑electric homes, especially when paired with rooftop solar and timers. A quality solar hot water system with a reliable solar hot water tank replacement can also slash bills, while a modern electric hot water installation can still be a solid option where roof or yard space is tight.
For a typical Marshall home, rough bill savings from a hot water upgrade can look like this:
• Old electric to heat pump: save around $350–$700 per year • Gas to heat pump: save around $250–$600 per year • Gas to solar hot water: save around $200–$550 per year • Old electric to modern electric with solar: save around $200–$500 per year
Brands such as Solahart, Thermann and EvoHeat also appear regularly in local quotes, giving homeowners a good range of options when comparing hot water system cost, efficiency and warranties.
Recent installs in Marshall show how quickly things have shifted. There have been 3,434 efficient hot water systems installed in the 3216 postcode, combining both heat pump and solar hot water systems. Annual installations were tiny in the early 2000s, then surged around 2008–2010, when more than 1,000 systems went in over just three years. Since then, numbers have stayed steady, with between about 90 and 180 installations each year from 2014 onwards, and ongoing activity right through 2024 and 2025. This steady trend underlines growing local interest in electrification, lower running costs and cleaner, energy efficient hot water system choices.
Hot Water Rebates, Tariffs & Savings
Around Marshall, more people are looking to replace old gas or electric hot water with efficient options like a heat pump hot water system, a modern electric hot water system or a solar hot water heating system. Part of the appeal is the range of incentives on offer. Under the Australian Government’s Small‑scale Technology Certificates (STCs), eligible heat pump and solar hot water systems can attract an upfront discount at the point of sale. On top of that, Victorian programs often provide a heat pump hot water rebate or solar hot water rebate, and there may also be support for an electric hot water system rebate when it replaces gas. Together, these hot water rebate VIC schemes can cut the effective heat pump hot water price or solar hot water price by a substantial percentage, bringing premium brands within reach for many Marshall homeowners.
With typical savings of hundreds of dollars per year on energy bills, payback periods can be surprisingly short, especially when you combine rebates with rooftop solar and use timers or solar‑diversion controls to heat water in the middle of the day. For many homes, this makes an energy efficient hot water system one of the smartest upgrades you can make.
If you live in Marshall and your current unit is old, noisy or running up big bills, it could be the right time to explore a hot water upgrade. Whether you are weighing up heat pump vs solar hot water, comparing solar hot water vs electric hot water, or just want the best hot water system Australia can offer for your budget, speaking with experienced local hot water VIC installers is the safest move. With Marshall’s strong solar resource and growing focus on sustainability, efficient hot water systems can help reduce bills, cut emissions and future‑proof your home. Connect with trusted local experts for personalised advice, hot water repair, solar hot water repair and tailored hot water installation options that suit your family, your roof and your budget, and make the most of every available hot water rebate VIC has to offer.