Hot Water Systems in St James
The 6102 postcode, covering St James, Bentley Dc, Bentley and Bentley South and surrounding areas, is home to around 5,850 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 James and the 6102 area, 404 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 James's climate delivering an average of 5.3 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 6102
125th
State Wide
675th
Australia Wide
Hot Water Installation St James
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 James
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterSt James
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 James
Compare heat pump hot water systems suitable for St James'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 James, 6102
Hot Water Demographics - St James
Based on the Australian Bureau of Statistics 2021 Census (ABS), St James has around 5,850 private dwellings, home to approximately 12,081 people. With an average household size of 2.3 people, and around 50 litres of hot water used per person each day in Australia, St James households use approximately 115 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 James's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The St James community is home to 749 couple families with children and 202 one-parent families, meaning a large proportion of households face substantial hot water demand. With 1,159 homes owned with a mortgage and 820 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 James is converting hot water demand to efficient systems faster than many peers, with 6.9% of dwellings already upgraded.
Hot water systems in St James
Across St James, more homeowners and investors are swapping old gas and ageing electric units for an energy efficient hot water system that is cheaper to run and kinder to the planet. With a young median age of around 32, plenty of shared rentals, and many busy families, reliable hot water that does not blow the power bill is becoming a must‑have rather than a luxury.
St James gets excellent sunshine, with Perth’s regional data showing around 19.3 MJ/m² of solar exposure a day on average – roughly 5.4 kWh/m². That strong sun means a solar hot water system or solar hot water heating system can do a lot of the heavy lifting, while a modern heat pump hot water system uses that mild air to deliver very low running costs. For a typical 2.3‑person household in the 6102 postcode, upgrading from older gas or resistive electric to an efficient hot water technology can cut hot water energy use by more than half over the year.
With about 5,195 dwellings and a big mix of separate houses, townhouses and flats, hot water needs in St James vary from compact electric hot water systems in units to larger family‑sized setups. Many households are watching costs closely, with median household income around $1,410 a week and solid mortgage and rent commitments, so the hot water system price or cost and ongoing bills really matter. That is why people are weighing up heat pump vs solar hot water and even solar hot water vs electric hot water to find the best fit for their roof space, budget and tariff.
Average annual bill savings from a hot water upgrade in St James can look like:
• Old electric to heat pump hot water system: $350–$700 per year • Gas to heat pump hot water system: $250–$550 per year • Gas to solar hot water system: $300–$650 per year • Old electric to modern electric hot water system with rooftop solar: $200–$450 per year
Local installs commonly feature trusted brands like Rheem solar hot water and Rheem heat pump hot water, Rinnai solar hot water, premium Japanese systems such as Sanden heat pump units, and value solar options like Chromagen solar hot water. Choosing the best hot water system Australia offers for your home comes down to roof orientation, household size and whether you already have solar panels. Many households now aim for the most efficient hot water system they can afford – often a heat pump or quality solar hot water tank replacement – to future‑proof against rising energy prices.
Efficient hot water is not just a theory in St James. There have already been 404 efficient hot water installations (heat pump and solar hot water installation combined) recorded in the 6102 postcode. Install numbers climbed steadily through the 2000s, peaking around 2009–2010 with more than 80 systems installed over those two years, and there has been a steady trickle of upgrades every year since, including new systems in 2022–2025. This pattern shows growing local interest in electrification, hot water repair and replacement, and lower running costs as owners move away from gas hot water towards heat pump hot water installation, solar hot water repair and efficient electric hot water installation.
Hot Water Rebates, Tariffs & Savings
For St James homes, the move away from old gas and clunky electric cylinders is helped along by generous incentives. Federal Small‑scale Technology Certificates (STCs) apply to eligible solar hot water systems and heat pump hot water systems, effectively working as an upfront solar hot water rebate or heat pump hot water rebate that can trim thousands off the solar hot water price or cost or heat pump hot water price or cost. WA programs and retailer offers can add further hot water rebate wa support, and some modern electric hot water system rebate schemes reward households that shift from gas to efficient, all‑electric setups. For many St James households, these discounts can slice a big chunk off the system cost, shorten the payback to just a few years, and unlock ongoing savings of hundreds of dollars per year. Smart use of timers or solar diversion – running your electric hot water system when your solar is exporting – can turn a standard unit into a genuinely energy efficient hot water system and make solar hot water vs electric hot water a closer call.
If you are in St James and your current unit is old, noisy or driving up the bills, this is a good time to check whether your place is ready for a hot water upgrade. Whether you are comparing electric hot water vs gas hot water, looking for the best heat pump hot water system, or wondering if a rheem solar hot water or rinnai solar hot water setup suits your roof, experienced local hot water wa installers can help you choose. With strong sunshine, a community that is increasingly focused on sustainability, and rising interest in all‑electric homes, efficient hot water systems are a smart way to cut emissions and reduce bills. Connect with trusted local experts for personalised advice with us and find the right hot water installation or hot water repair option to future‑proof your St James home.