Hot Water Systems in St Kilda
The 5110 postcode, covering St Kilda, Bolivar, Burton, Direk, Globe Derby Park and Waterloo Corner and surrounding areas, is home to around 3,267 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 St Kilda and the 5110 area, 117 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 St Kilda's climate delivering an average of 5.0 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 5110
136th
State Wide
1333rd
Australia Wide
Hot Water Installation St Kilda
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 St Kilda
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterSt Kilda
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.
Want Solar Finance Options?
Compare lenders and get tailored loan offers.
Heat Pump Hot Water Systems for St Kilda
Compare heat pump hot water systems suitable for St Kilda'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 - St Kilda, 5110
Hot Water Demographics - St Kilda
Based on the Australian Bureau of Statistics 2021 Census (ABS), St Kilda has around 3,267 private dwellings, home to approximately 8,817 people. With an average household size of 2.8 people, and around 50 litres of hot water used per person each day in Australia, St Kilda households use approximately 140 litres of hot water daily, equating to a massive 0.5 million litres of hot water used across the suburb every single day.
Other census insights reinforce St Kilda's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The St Kilda community is home to 820 couple families with children and 305 one-parent families, meaning a large proportion of households face substantial hot water demand. With 1,378 homes owned with a mortgage and 884 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.
St Kilda is converting hot water demand to efficient systems faster than many peers, with 3.6% of dwellings already upgraded.
Hot water systems in St Kilda
In St Kilda, SA 5110, more locals are switching to an energy efficient hot water system to keep bills down and move away from gas. With an average household size of about 2.8 people and more than 3,000 dwellings across the 5110 postcode, reliable hot water is non‑negotiable for busy families and tradies alike. Power prices keep creeping up, so upgrading an old gas or electric hot water system to a modern heat pump hot water system, solar hot water system or efficient electric hot water system is becoming the logical next step.
St Kilda enjoys strong sunshine, with Torrens Island recording around 17.8 MJ/m² of solar exposure per day on average – roughly 4.9 kWh/m². That level of sun makes both a solar hot water heating system and a quality heat pump hot water installation perform very well, especially when paired with rooftop solar. With many homes owned outright or with a mortgage, and a solid median household income, plenty of households are now looking at long‑term energy savings rather than just the cheapest hot water system price on day one.
Across the 5110 area there’s a clear trend towards efficient hot water. Average household size and the dominance of three‑bedroom homes mean hot water demand is steady, and hot water can easily account for a quarter of household energy use. Swapping an older gas unit for an energy efficient hot water system such as Rheem heat pump hot water or a Sanden heat pump can cut that usage dramatically. Brands like Rheem solar hot water, Rinnai solar hot water and Chromagen solar hot water are common options for a solar hot water installation, while Sanden heat pump units are often chosen as some of the best heat pump hot water system choices on the market.
Typical annual bill savings in St Kilda look like:
• Old electric to heat pump hot water system: save roughly $400–$800 per year • Gas to heat pump: save around $300–$700 per year • Gas to solar hot water system: save about $250–$600 per year • Old electric to modern electric hot water installation powered by solar: save around $300–$700 per year
There have already been 117 efficient hot water installations (heat pump and solar) recorded across the 5110 postcode. Installations grew steadily through the 2000s, peaking around 2010 with 21 systems in a single year, before tapering off and then stabilising again with new installs each year since 2020. This pattern shows early adopters in St Kilda jumped on solar hot water vs electric hot water more than a decade ago, and now a new wave of interest in electrification, heat pump vs solar hot water comparisons, and lower running costs is emerging.
Hot Water Rebates, Tariffs & Savings
Right now, hot water SA customers are looking hard at replacing tired gas storage units with options like heat pump hot water, efficient electric hot water vs gas hot water, and roof‑mounted solar hot water. Federal incentives such as Small‑scale Technology Certificates (STCs) apply to eligible solar hot water systems and heat pumps, effectively lowering the solar hot water price / cost or heat pump hot water price / cost at the point of sale. On top of that, state‑based schemes can offer a solar hot water rebate, heat pump hot water rebate or even an electric hot water system rebate for certain efficient models, all contributing to a strong hot water rebate sa landscape.
For many St Kilda households, these discounts can trim the upfront hot water system cost by a substantial percentage and shorten the payback period to just a few years, especially if you already have solar panels. Using timers or solar diversion to run an electric hot water system during the middle of the day can turn it into the most efficient hot water system for your situation, and makes solar hot water vs electric hot water a closer contest. There are also options for solar hot water repair, hot water repair and solar hot water tank replacement to keep existing systems working efficiently rather than starting from scratch.
If you are wondering about the best hot water system Australia can offer for your St Kilda home, it will usually come down to your roof space, budget, and whether you want the lowest running costs or lowest upfront spend. Comparing solar hot water price / cost and heat pump hot water price / cost against what you currently pay for gas or old electric is the first step.
If your hot water system is older, noisy or costing a fortune to run, now is a smart time to see whether a heat pump hot water installation, solar hot water installation or efficient electric hot water installation could suit your place in St Kilda. Talk with experienced local hot water installers like us who specialise in heat pump, solar and electric upgrades. With St Kilda’s strong solar exposure and growing interest in sustainability, an energy efficient hot water system can cut bills, reduce emissions and future‑proof your home. Connect with trusted local experts for personalised advice and find the right hot water upgrade for your family.