Hot Water Systems in Old Erowal Bay
The 2540 postcode, covering Old Erowal Bay, Nowra Naval Po, Wreck Bay, Bamarang, Barringella, Basin View, Beecroft Peninsula, Berrara, Bewong, Bolong, Boolijah, Bream Beach, Browns Mountain, Brundee, Buangla, Burrier, Callala Bay, Callala Beach, Cambewarra, Cambewarra Village, Comberton, Comerong Island, Cudmirrah, Culburra Beach, Currarong, Erowal Bay, Ettrema, Falls Creek, Greenwell Point, Hmas Albatross, Hmas Creswell, Huskisson, Hyams Beach, Illaroo, Jerrawangala, Jervis Bay, Kinghorne, Longreach, Mayfield, Meroo Meadow, Mondayong, Moollattoo, Mundamia, Myola, Nowra Hill, Numbaa, Orient Point, Parma, Pyree, Sanctuary Point, St Georges Basin, Sussex Inlet, Swanhaven, Tallowal, Tapitallee, Terara, Tomerong, Tullarwalla, Twelve Mile Peg, Vincentia, Wandandian, Watersleigh, Wollumboola, Woollamia, Worrigee, Worrowing Heights, Wrights Beach, Yalwal and Yerriyong and surrounding areas, is home to around 26,054 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 Erowal Bay and the 2540 area, 4,586 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 Erowal Bay's climate delivering an average of 4.4 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 2540
4th
State Wide
24th
Australia Wide
Hot Water Installation Old Erowal Bay
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 Erowal Bay
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterOld Erowal Bay
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 Erowal Bay
Compare heat pump hot water systems suitable for Old Erowal Bay'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 Erowal Bay, 2540
Hot Water Demographics - Old Erowal Bay
Based on the Australian Bureau of Statistics 2021 Census (ABS), Old Erowal Bay has around 26,054 private dwellings, home to approximately 43,985 people. With an average household size of 2.3 people, and around 50 litres of hot water used per person each day in Australia, Old Erowal Bay households use approximately 115 litres of hot water daily, equating to a massive 3.0 million litres of hot water used across the suburb every single day.
Other census insights reinforce Old Erowal Bay's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Old Erowal Bay community is home to 2,934 couple families with children and 967 one-parent families, meaning a large proportion of households face substantial hot water demand. With 5,226 homes owned with a mortgage and 8,495 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 Erowal Bay is converting hot water demand to efficient systems faster than many peers, with 17.6% of dwellings already upgraded.
Hot water systems in Old Erowal Bay
Around Old Erowal Bay, more locals are quietly upgrading to energy efficient hot water systems – swapping old gas or tired electric units for modern heat pump hot water, solar hot water and smarter electric hot water system options. With a median household size of around 2.3 people and plenty of separate houses across the 2540 postcode, most homes here have steady year‑round hot water demand, so running costs really add up over time.
The Sanctuary Point weather station shows an impressive 15.8 MJ/m² of average annual solar exposure – roughly 4.4 kWh/m² per day – which makes a solar hot water system or heat pump hot water system a natural fit. Families and retirees alike in Old Erowal Bay are looking to cut bills and future‑proof their homes, especially with many households on fixed incomes and a median total household income of about $1,275 per week. Moving from older gas or resistive electric to an energy efficient hot water system is often one of the easiest ways to lock in long‑term savings.
Across the 2540 area there are 26,000+ dwellings, many of them three‑ and four‑bedroom homes with higher hot water demand. Hot water energy use can be one of the biggest chunks of a power bill, so choosing the most efficient hot water system for your household really matters. For some, that might be a rheem solar hot water or rinnai solar hot water heating system paired with existing rooftop PV. For others, a sanden heat pump or Rheem heat pump hot water unit can deliver excellent performance even on cloudy days, often rated among the best heat pump hot water system options in Australia.
Typical annual bill savings in Old Erowal Bay can look like:
• Old electric hot water system to heat pump hot water system: save roughly $400–$800 per year. • Gas hot water to heat pump: save around $300–$700 per year. • Gas hot water to solar hot water system: save about $250–$600 per year. • Old electric to modern electric hot water installation with solar diversion: save roughly $250–$500 per year.
Local data shows 4,586 efficient hot water systems have already been installed in the 2540 postcode – a mix of heat pump hot water installation and solar hot water installation. Installations ramped up strongly around 2008–2010, with 1,176 installs in 2009 alone, and have continued at a steady pace through to 2024 and 2025. This long‑term trend shows growing interest in electrification, lower running costs and more reliable, energy efficient hot water options across Old Erowal Bay.
When people compare heat pump vs solar hot water, it usually comes down to roof space, budget and how they use hot water. A solar hot water vs electric hot water decision will also consider whether there is existing solar PV, and whether a solar hot water tank replacement makes sense now or later. Heat pump units often win for set‑and‑forget convenience, while a well‑designed solar hot water heating system can deliver excellent summer performance and very low running costs. Either way, modern systems from brands like Rheem, Rinnai and Sanden are designed to be the most efficient hot water system they can be, especially when paired with timers or solar‑diverters.
Hot Water Rebates, Tariffs & Savings
Across hot water nsw, rebates and incentives are helping Old Erowal Bay homeowners move away from gas and old electric units. Federal Small‑scale Technology Certificates (STCs) apply to eligible solar hot water and heat pump systems, effectively reducing the solar hot water price / cost or heat pump hot water price / cost at the point of sale. On top of that, state‑based heat pump hot water rebate and solar hot water rebate programs, plus occasional electric hot water system rebate offers, can cut the upfront hot water system price / cost by a substantial percentage.
For many households, this means an efficient hot water upgrade can pay for itself in just a few years, especially when combined with rooftop solar and smart tariffs. Swapping electric hot water vs gas hot water the right way can trim hundreds of dollars per year from bills. Using timers to run a heat pump in the middle of the day, or diverting excess solar to an electric hot water system, can turn a standard unit into a truly energy efficient hot water system and shorten the payback period even further. These incentives effectively act as a hot water rebate nsw residents can tap into to make the best hot water system Australia has to offer more affordable.
If your current unit is older, noisy or struggling, it is a good time to check whether your Old Erowal Bay home is ready for a hot water upgrade – from gas or an old electric unit to a modern heat pump or solar hot water system. Working with experienced local installers like us, who specialise in heat pump hot water installation, solar hot water repair, electric hot water installation and hot water repair, means you get clear advice on the right size, technology and tariffs for your place. With strong local solar resources and growing interest in sustainability, efficient hot water systems can help you cut bills, reduce emissions and future‑proof your home. Connect with trusted local experts for personalised advice and a smooth hot water installation tailored to life in Old Erowal Bay.
