Hot Water Systems in Wallacia
The 2745 postcode, covering Wallacia, Glenmore Park, Greendale, Luddenham, Mulgoa and Regentville and surrounding areas, is home to around 10,160 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 Wallacia and the 2745 area, 469 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 Wallacia's climate delivering an average of 4.5 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 2745
133rd
State Wide
596th
Australia Wide
Hot Water Installation Wallacia
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 Wallacia
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterWallacia
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 Wallacia
Compare heat pump hot water systems suitable for Wallacia'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 - Wallacia, 2745
Hot Water Demographics - Wallacia
Based on the Australian Bureau of Statistics 2021 Census (ABS), Wallacia has around 10,160 private dwellings, home to approximately 31,004 people. With an average household size of 3.2 people, and around 50 litres of hot water used per person each day in Australia, Wallacia households use approximately 160 litres of hot water daily, equating to a massive 1.6 million litres of hot water used across the suburb every single day.
Other census insights reinforce Wallacia's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Wallacia community is home to 3,315 couple families with children and 696 one-parent families, meaning a large proportion of households face substantial hot water demand. With 5,013 homes owned with a mortgage and 2,552 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.
Wallacia is converting hot water demand to efficient systems faster than many peers, with 4.6% of dwellings already upgraded.
Hot water systems in Wallacia
Across Wallacia and the wider 2745 area, more households are moving away from old gas and power‑hungry electric units to a modern hot water system that is cheaper to run and easier on the environment. With an average household size of about 3.2 people and more than 7,500 homes owned or mortgaged, long showers, busy family routines and rising power prices make efficient hot water a smart upgrade rather than a luxury.
Wallacia’s strong sunshine is a big part of the story. The local weather station records around 16 MJ/m² of solar exposure a day over the year, which is roughly 4.4 kWh/m² of energy – ideal for getting the most out of a solar hot water system or a high‑efficiency heat pump hot water system. For many homes, hot water is the second‑largest chunk of electricity use, so switching from an old gas or electric hot water system to an energy efficient hot water system can deliver some of the biggest bill savings. Families here typically have three or four bedrooms, so hot water demand is steady all year, and the Annual Hot Water Energy Savings from a modern unit can easily reach hundreds of dollars.
In the 2745 postcode there are more than 9,800 dwellings, mostly separate houses with good roof space for solar hot water heating system upgrades. Many already have rooftop solar, making heat pump hot water installation or solar hot water installation an obvious next step. Brands like Rheem solar hot water and Rinnai solar hot water are common choices for roof‑mounted or split solar hot water systems, while premium heat pump options such as Sanden heat pump units are popular with households chasing the most efficient hot water system on the market. For budget‑friendly reliability, Rheem heat pump hot water and other best heat pump hot water system contenders can dramatically cut running costs compared with older cylinders.
Typical annual bill savings in Wallacia look like this:
• Old electric to heat pump hot water system: save around $400–$800 per year • Gas storage to heat pump hot water: save around $300–$600 per year • Gas to solar hot water system: save around $250–$550 per year • Old electric to modern electric hot water installation with rooftop solar: save around $250–$500 per year
Local data shows 469 efficient hot water installations (heat pump and solar) recorded in the 2745 area. Installations spiked around 2009–2011, with nearly 100 systems in 2009 alone, as solar hot water rebate offers and early heat pump hot water rebate programs kicked in. While yearly numbers have eased back since then, recent installs through to 2025 show steady interest as more Wallacia households look to electrification, lower running costs and hot water repair or replacement options that future‑proof their homes.
Hot Water Rebates, Tariffs & Savings
For Wallacia homeowners, the mix of federal and NSW hot water rebate programs makes upgrading from gas or an old electric hot water system far more affordable. The Australian Government’s Small‑scale Technology Certificates (STCs) apply to eligible solar hot water systems and heat pump units, effectively discounting the solar hot water price / cost or heat pump hot water price / cost by a substantial amount at the point of sale. On top of that, NSW heat pump hot water rebate schemes and solar hot water rebate offers can further reduce the upfront hot water system price / cost, and there are also electric hot water system rebate options when replacing inefficient units.
When you combine rebates with off‑peak tariffs, timers or solar‑diversion controls, many Wallacia homes see payback periods for a new solar hot water vs electric hot water or heat pump vs solar hot water upgrade drop to just a few years. Shifting from electric hot water vs gas hot water to a modern, energy efficient hot water system can trim hundreds of dollars a year from bills, especially if you already export plenty of excess solar.
If your hot water tank is ageing, you are facing another hot water repair, or you are comparing solar hot water vs electric hot water options, this is a great time to check whether your Wallacia home is ready for a hot water upgrade. Whether it is solar hot water tank replacement, electric hot water installation, solar hot water repair or a full heat pump hot water installation, working with experienced hot water NSW specialists matters. With strong local solar, solid household incomes and growing interest in sustainability, efficient hot water systems can reduce bills, cut emissions and future‑proof your home. Connect with trusted local experts for personalised advice on the best hot water system Australia can offer for your Wallacia property and make the most of every drop of hot water rebate NSW support available.