Hot Water Systems in Old Grevillia
The 2474 postcode, covering Old Grevillia, Afterlee, Barkers Vale, Border Ranges, Cawongla, Cedar Point, Collins Creek, Cougal, Dairy Flat, Eden Creek, Edenville, Ettrick, Fawcetts Plain, Findon Creek, Geneva, Ghinni Ghi, Gradys Creek, Green Pigeon, Grevillia, Homeleigh, Horse Station Creek, Horseshoe Creek, Iron Pot Creek, Kilgra, Kyogle, Little Back Creek, Loadstone, Lynchs Creek, New Park, Roseberry, Roseberry Creek, Rukenvale, Sawpit Creek, Sherwood, Smiths Creek, Terrace Creek, The Risk, Toonumbar, Unumgar, Upper Eden Creek, Upper Horseshoe Creek, Wadeville, Warrazambil Creek, West Wiangaree, Wiangaree and Wyneden and surrounding areas, is home to around 2,972 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 Old Grevillia and the 2474 area, 694 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 Old Grevillia'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 2474
98th
State Wide
441st
Australia Wide
Hot Water Installation Old Grevillia
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 Old Grevillia
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterOld Grevillia
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 Old Grevillia
Compare heat pump hot water systems suitable for Old Grevillia'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 - Old Grevillia, 2474
Hot Water Demographics - Old Grevillia
Based on the Australian Bureau of Statistics 2021 Census (ABS), Old Grevillia has around 2,972 private dwellings, home to approximately 5,850 people. With an average household size of 2.2 people, and around 50 litres of hot water used per person each day in Australia, Old Grevillia households use approximately 110 litres of hot water daily, equating to a massive 0.3 million litres of hot water used across the suburb every single day.
Other census insights reinforce Old Grevillia's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Old Grevillia community is home to 349 couple families with children and 169 one-parent families, meaning a large proportion of households face substantial hot water demand. With 664 homes owned with a mortgage and 1,278 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.
Old Grevillia is converting hot water demand to efficient systems faster than many peers, with 23.4% of dwellings already upgraded.
Hot water systems in Old Grevillia
In Old Grevillia and across the 2474 postcode, more locals are rethinking their hot water system and moving away from old gas and power‑hungry electric units. With energy costs biting and many households on a median income of around $1,003 a week, upgrading to an energy efficient hot water system is becoming a smart, budget‑friendly move. Smaller households (the average is about 2.2 people) still use a surprising amount of energy for hot showers, washing and dishes, so cutting hot water running costs can make a real dent in the quarterly bill.
Old Grevillia is well suited to efficient hot water technology. The local climate enjoys strong sunshine, with average solar exposure of about 17.6 MJ/m² per day – roughly 4.9 kWh/m² of solar energy daily over the year. That is ideal for a solar hot water system or modern heat pump hot water system, especially when paired with rooftop solar. For many older residents – and there are more than 1,700 people over 65 in the postcode – reliability and low maintenance matter just as much as savings, which is where proven brands like Rheem, Rinnai and Sanden heat pump systems come into their own.
Across the 2474 area there are 2,611 occupied private dwellings, mostly separate houses with decent roof space. Many still rely on older gas or basic electric hot water, but the number of efficient systems is climbing. A modern heat pump hot water installation can slash electricity use by around two‑thirds compared with an old electric hot water system, while a well‑designed solar hot water heating system can provide most of a family’s hot water for free on sunny days. For homes already running solar PV, solar hot water vs electric hot water on a standard tariff is almost no contest – using your own solar to drive a heat pump or electric storage unit is one of the easiest ways to lower bills.
Average annual savings will always depend on your usage, but typical ranges for Old Grevillia homes look like:
• Old electric to heat pump hot water system: $400–$900 per year • Gas to heat pump hot water: $300–$700 per year • Gas to solar hot water system: $300–$800 per year • Old electric to modern electric hot water installation with good solar: $250–$600 per year
Local installers are seeing steady interest in brands like Rheem heat pump hot water, Sanden heat pump units for top‑tier efficiency, and Rinnai solar hot water or Chromagen solar hot water systems for reliable roof‑mounted solutions. Many homeowners ask about the best hot water system Australia can offer; in practice the best heat pump hot water system or solar hot water option for Old Grevillia is the one correctly sized to your household, roof and budget, with strong local backup for hot water repair and servicing.
Recent years show how quickly the area has embraced efficient hot water. There have already been 694 efficient hot water installations recorded in the postcode, combining heat pump hot water installation and solar hot water installation jobs. Uptake began slowly in the early 2000s, then jumped sharply around 2009–2011, when over 250 systems went in during just three years. Since then, installations have continued at a steady clip each year, reflecting a long‑term shift toward electrification, lower running costs and the most efficient hot water system options available.
Hot Water Rebates, Tariffs & Savings
For Old Grevillia households looking at heat pump vs solar hot water, rebates and incentives can be the deciding factor. The Australian Government’s Small‑scale Technology Certificates (STCs) effectively act as an upfront discount off the heat pump hot water price / cost or solar hot water price / cost, based on system efficiency and size. On top of that, NSW programs can offer a specific heat pump hot water rebate or solar hot water rebate, and there are schemes that support an electric hot water system rebate when replacing old, inefficient units. Together, these hot water rebate nsw options can trim the system cost by a substantial percentage, often cutting payback times to just a few years, especially when you already have solar.
For many Old Grevillia homes, switching from electric hot water vs gas hot water to a modern energy efficient hot water system can save hundreds of dollars a year. Using timers or smart controls to run a heat pump during solar hours, or diverting excess PV to an electric hot water system, squeezes even more value from your panels. Over the life of the system, that can mean thousands saved, lower emissions and far less worry about future energy price rises.
If your hot water is older, noisy or unreliable, now is a good time to check whether your Old Grevillia home is ready for a hot water upgrade. Whether you are comparing heat pump hot water vs solar hot water, looking at rheem solar hot water or rinnai solar hot water, or planning a solar hot water tank replacement, working with experienced hot water nsw installers matters. Local specialists can help you weigh solar hot water vs electric hot water, explain the true hot water system price / cost after rebates, and recommend the best heat pump hot water system or solar hot water repair and replacement plan for your property. With growing interest in sustainability across Old Grevillia, an energy efficient hot water system is a simple way to cut bills, reduce emissions and future‑proof your home—connect with trusted local experts for personalised advice with us today.
