Hot Water Systems in Postans
The 6167 postcode, covering Postans, Anketell, Bertram, Calista, Casuarina, Kwinana Beach, Kwinana Town Centre, Mandogalup, Medina, Orelia, Parmelia, The Spectacles and Wandi and surrounding areas, is home to around 10,868 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 Postans and the 6167 area, 2,357 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 Postans'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 6167
19th
State Wide
84th
Australia Wide
Hot Water Installation Postans
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 Postans
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterPostans
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 Postans
Compare heat pump hot water systems suitable for Postans'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 - Postans, 6167
Hot Water Demographics - Postans
Based on the Australian Bureau of Statistics 2021 Census (ABS), Postans has around 10,868 private dwellings, home to approximately 25,404 people. With an average household size of 2.6 people, and around 50 litres of hot water used per person each day in Australia, Postans households use approximately 130 litres of hot water daily, equating to a massive 1.4 million litres of hot water used across the suburb every single day.
Other census insights reinforce Postans's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Postans community is home to 2,410 couple families with children and 821 one-parent families, meaning a large proportion of households face substantial hot water demand. With 4,882 homes owned with a mortgage and 1,975 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.
Postans is converting hot water demand to efficient systems faster than many peers, with 21.7% of dwellings already upgraded.
Hot water systems in Postans
Across Postans and the wider 6167 area, more households are rethinking how they heat their water. With power prices rising and a strong local push towards all‑electric, energy‑efficient homes, upgrading your hot water system is one of the easiest ways to cut bills without sacrificing comfort. In a postcode with around 10,000 dwellings, an average household size of 2.6 people and a median household income of about $1,538 a week, every dollar saved on running costs helps. Postans enjoys excellent sunshine, with average solar exposure of about 19.2 MJ/m² per day – roughly 5.3 kWh/m² – which makes a solar hot water system or high‑efficiency heat pump hot water system a logical next step from older gas or electric units. Over a year, that means serious hot water energy savings for local homeowners.
Most homes in Postans are separate houses with three or four bedrooms, so hot water demand is steady – morning showers, laundry, and evening baths for kids. That is where choosing the most efficient hot water system really pays off. A modern heat pump hot water system or solar hot water heating system can use a fraction of the energy of an old electric hot water system or gas storage unit. Brands like Rheem and Rinnai are common choices locally, with options ranging from Rheem solar hot water and Rheem heat pump hot water through to Rinnai solar hot water for family homes. Sanden heat pump systems are also popular with those chasing ultra‑low running costs, while Chromagen solar hot water is a solid option for roof‑mounted solar hot water installation and solar hot water tank replacement.
In the 6167 postcode, efficient hot water systems are already well established, with 2,357 heat pump and solar hot water installations recorded. Install numbers climbed steadily from the early 2000s, peaking around 2010, and there is still consistent interest through to 2025 as more residents look for an energy efficient hot water system and move away from gas. These trends mirror the broader electrification push in WA, where people are pairing rooftop solar with efficient hot water to bring bills right down.
When you look at hot water system price and ongoing costs, the upgrade story is compelling. Typical annual bill savings in Postans look like:
• Old electric to heat pump: save around $350–$700 per year • Gas to heat pump: save around $250–$550 per year • Gas to solar hot water: save around $200–$500 per year • Old electric to modern electric with solar: save around $200–$450 per year
Actual heat pump hot water price or cost, and solar hot water price or cost, depends on the size of your home and whether you need extra electrical work or a solar hot water tank replacement. But when you factor in lower running costs, many systems pay for themselves within a few years. For many households, the best heat pump hot water system is one that matches their usage pattern and roof solar, rather than just the cheapest unit upfront. The same goes when weighing up heat pump vs solar hot water or solar hot water vs electric hot water – the right choice depends on your roof, tariffs and whether you already have PV.
Hot Water Rebates, Tariffs & Savings
Across WA, interest in replacing old gas or electric hot water with efficient options is growing fast, and Postans is no exception. Federal incentives like Small‑scale Technology Certificates (STCs) apply to approved solar hot water systems and heat pump hot water installation, effectively acting as a solar hot water rebate or heat pump hot water rebate that reduces the upfront cost. On top of that, there are state‑based programs that at times offer extra support for efficient electric hot water installation or heat pump upgrades, which function as a kind of electric hot water system rebate for eligible homes. Together, these hot water rebate WA schemes can slice a substantial percentage off the installed price.
For many Postans households, that means an efficient hot water upgrade can cut hundreds of dollars per year from bills, with payback periods dropping further if you run your system on a timer or use solar diversion to soak up excess rooftop generation. When you compare electric hot water vs gas hot water under current tariffs, efficient electric options usually come out ahead, especially when powered by your own solar.
If your current unit is ageing, running out of hot water, or costing a fortune to run, it is a good time to see whether a modern hot water system in WA – from a quality rheem solar hot water or rinnai solar hot water setup to a sanden heat pump or other best hot water system Australia contenders – could suit your home. A well‑planned hot water installation or hot water repair not only restores reliable hot showers, it can also future‑proof your home as energy prices and emissions standards change.
If you live in Postans and you are curious about upgrading from gas or an old electric system, now is a smart time to act. With strong local solar, growing interest in sustainability and generous hot water rebate WA incentives, an efficient heat pump hot water installation, solar hot water repair and upgrade, or modern electric hot water installation can trim bills and cut emissions for years to come. Talk with experienced local hot water installers and specialists in heat pump vs solar hot water today to compare options, check the real hot water system cost for your home, and get personalised advice on the best hot water system Australia has to offer for your place.