Hot Water Systems in St Clair
The 5011 postcode, covering St Clair, St Claire, Woodville, Woodville Park, Woodville South and Woodville West and surrounding areas, is home to around 5,817 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 Clair and the 5011 area, 133 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 Clair's climate delivering an average of 4.9 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 5011
124th
State Wide
1267th
Australia Wide
Hot Water Installation St Clair
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 Clair
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterSt Clair
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 St Clair
Compare heat pump hot water systems suitable for St Clair'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 Clair, 5011
Hot Water Demographics - St Clair
Based on the Australian Bureau of Statistics 2021 Census (ABS), St Clair has around 5,817 private dwellings, home to approximately 13,298 people. With an average household size of 2.4 people, and around 50 litres of hot water used per person each day in Australia, St Clair households use approximately 120 litres of hot water daily, equating to a massive 0.7 million litres of hot water used across the suburb every single day.
Other census insights reinforce St Clair's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The St Clair community is home to 1,143 couple families with children and 254 one-parent families, meaning a large proportion of households face substantial hot water demand. With 2,144 homes owned with a mortgage and 1,341 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 Clair is converting hot water demand to efficient systems faster than many peers, with 2.3% of dwellings already upgraded.
Hot water systems in St Clair
Across St Clair and the wider 5011 area, more households are moving away from old gas units and power‑hungry cylinders towards an energy efficient hot water system. With an average household size of around 2.4 people and more than 5,400 occupied dwellings, reliable hot water is non‑negotiable – but with energy prices climbing, many locals are now weighing up a heat pump hot water system, solar hot water system or modern electric hot water system as a smarter long‑term choice.
St Clair’s strong sunshine makes upgrades especially attractive. The local Gillman Yard weather station records mean daily solar exposure of about 17.8 MJ/m² – roughly 4.9 kWh/m² per day – which is ideal for a solar hot water heating system and also boosts the performance of a quality heat pump hot water system. With a median total household income of $1,729 per week and a solid base of homes owned with a mortgage, switching from older gas or electric hot water to the most efficient hot water system you can afford is a logical way to cut running costs and protect your budget for years to come.
In the 5011 postcode, three‑bedroom homes are the norm, so hot water demand for showers, washing and dishwashers adds up quickly. Many properties are still on traditional gas or resistive electric units, meaning hot water energy use can quietly chew through a big slice of the quarterly bill. That is why more St Clair homeowners are comparing heat pump vs solar hot water, and even looking at solar hot water vs electric hot water with rooftop PV in the mix. Brands like Rheem heat pump hot water and Sanden heat pump systems are popular with families chasing maximum efficiency, while Rheem solar hot water, Rinnai solar hot water and Chromagen solar hot water are common choices when roof space and orientation are suitable. For those wanting a straightforward upgrade, a high‑efficiency electric hot water installation paired with solar PV can still deliver excellent savings.
Typical bill savings in St Clair for a well‑matched hot water installation look like this:
• Replacing an old electric hot water system with a quality heat pump: around $350–$700 per year. • Swapping gas hot water for a heat pump hot water system: roughly $250–$600 per year. • Moving from gas to a solar hot water system: often $300–$650 per year. • Upgrading an old electric unit to a modern electric hot water system and using excess solar: about $200–$500 per year.
Local data shows this shift is already under way. In St Clair and the surrounding 5011 area there have been 133 efficient hot water systems installed to date, including both heat pump hot water installation and solar hot water installation projects. Install numbers rose steadily through the 2000s, peaking around 2009–2010 with 16 systems each year as early rebates kicked in, and there has been a steady trickle of installs every year since 2016. This pattern reflects growing interest in electrification, lower running costs and cutting emissions, especially among families and older residents keen to future‑proof their homes.
When you are pricing an upgrade, it is worth looking beyond the sticker hot water system price or solar hot water price / cost. The effective heat pump hot water price / cost can be much lower once incentives are applied, and the same goes for a solar hot water tank replacement or full solar hot water repair and upgrade. Australian Federal Government Small‑scale Technology Certificates (STCs) reduce upfront cost for eligible systems, while South Australian programmes can offer a heat pump hot water rebate, solar hot water rebate or electric hot water system rebate on approved models. Together, these hot water rebate SA options can slice a substantial percentage off the installed cost and shorten the payback period to just a few years, especially if you also use timers or solar diversion to run your hot water system when your PV is generating.
If your current unit is more than ten years old, running out of hot water or needing regular hot water repair, it is a good time to compare options like Rheem solar hot water, Rinnai solar hot water, Sanden heat pump or other contenders for the best heat pump hot water system and best hot water system Australia has to offer. For many St Clair homes, an energy efficient hot water system is one of the simplest ways to cut bills, reduce reliance on gas and lower carbon emissions.
Ready to see if your St Clair home is set up for a heat pump hot water installation, solar hot water repair and upgrade, or a modern electric hot water installation? Talk with experienced hot water SA specialists who understand local conditions, rebates and tariffs. With the right advice and trusted local installers working with us, you can choose a system that suits your family, shrinks your bills and makes your home more sustainable for the long term.