Hot Water in Kerewong, NSW

Hot Water Systems in Kerewong

The 2439 postcode, covering Kerewong, Batar Creek, Black Creek, Bobs Creek, Herons Creek, Kendall, Kew, Logans Crossing, Lorne, Rossglen, Swans Crossing and Upsalls Creek and surrounding areas, is home to around 1,694 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 Kerewong and the 2439 area, 453 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 Kerewong's climate delivering an average of 4.6 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.

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Hot Water Ranking

Postcode 2439

143rd

State Wide

617th

Australia Wide

Hot Water Installation Kerewong

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 Kerewong

* Data from the Bureau of Meteorology. Closest station: N/A.

Solar Powered Hot WaterKerewong

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 Kerewong

Compare heat pump hot water systems suitable for Kerewong'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 - Kerewong, 2439

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Hot Water Demographics - Kerewong

Based on the Australian Bureau of Statistics 2021 Census (ABS), Kerewong has around 1,694 private dwellings, home to approximately 3,864 people. With an average household size of 2.4 people, and around 50 litres of hot water used per person each day in Australia, Kerewong households use approximately 120 litres of hot water daily, equating to a massive 0.2 million litres of hot water used across the suburb every single day.

Other census insights reinforce Kerewong's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Kerewong community is home to 233 couple families with children and 80 one-parent families, meaning a large proportion of households face substantial hot water demand. With 432 homes owned with a mortgage and 826 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.

Kerewong is converting hot water demand to efficient systems faster than many peers, with 26.7% of dwellings already upgraded.

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Hot water systems in Kerewong

Across Kerewong and the 2439 area, more households are rethinking their old gas and electric hot water systems and switching to efficient options like a heat pump hot water system, solar hot water system or modern electric hot water system. With most homes here being separate houses and an average household size of around 2.4 people, hot water is a big chunk of the power bill – especially for families and retirees on a median household income of about $1,242 a week.

Kerewong is well suited to efficient hot water upgrades. The nearby Lorne Road weather station records an average annual solar exposure of about 16.5 MJ/m² a day – roughly 4.6 kWh/m² – which is excellent for both a solar hot water heating system and a high‑quality heat pump hot water system. That strong sunlight, combined with high home‑ownership levels (over 800 dwellings owned outright and more than 400 with a mortgage), makes upgrading from older gas or resistive electric hot water to an energy efficient hot water system a logical next step. For many Kerewong households, annual hot water energy savings from an efficient hot water upgrade can be hundreds of dollars a year, especially when paired with rooftop solar.

In 2439, most dwellings are three‑ and four‑bedroom homes, so hot water demand is steady even with a slightly older population and a median age of 54. Hot water can easily account for a quarter of household energy use, which is why more locals are asking about the most efficient hot water system for their situation and comparing heat pump vs solar hot water and solar hot water vs electric hot water. Well‑known brands like Rheem solar hot water, Rinnai solar hot water, Sanden heat pump and Thermann are common choices for Kerewong homeowners looking for the best hot water system Australia can offer in real‑world conditions.

When you look at hot water system price or cost, it helps to think in terms of savings. Typical average annual bill reductions in a town like Kerewong look like this:

• Old electric to a quality heat pump hot water system: $400–$800 a year • Gas storage to heat pump hot water: $300–$600 a year • Gas storage to a solar hot water system: $250–$550 a year • Old electric to a modern electric hot water installation backed by solar PV: $250–$500 a year

Local hot water installation data backs up this shift. In the 2439 postcode there have been 453 efficient hot water systems installed, including both heat pump hot water installation and solar hot water installation jobs. Installations climbed sharply around 2008–2010, with another strong year in 2016, and have continued steadily through to 2025. That mix of early adopters and ongoing upgrades shows growing interest in hot water electrification, lower running costs and reliable hot water NSW‑wide, especially in smaller communities like Kerewong.

For homeowners weighing heat pump vs solar hot water, it often comes down to roof space, budget and how you use power. A heat pump hot water price or cost can look higher upfront than a basic electric hot water system, but the running costs are far lower. A solar hot water price or cost can also be higher initially, but with Kerewong’s sunshine and the right solar hot water tank replacement or new system, the long‑term savings can be excellent. Many locals choose premium systems such as a Sanden heat pump or Rheem heat pump hot water for top efficiency, or go with brands like Rinnai or Thermann for a balance of value and performance. Chromagen solar hot water and other quality brands are also options when designing a solar hot water heating system that suits your roof and household size.

Hot Water Rebates, Tariffs & Savings

Across Kerewong, there is growing interest in replacing old gas or electric hot water with efficient options. Federal incentives like Small‑scale Technology Certificates (STCs) apply to eligible solar hot water systems and heat pump hot water systems, effectively acting as an upfront solar hot water rebate or heat pump hot water rebate. NSW programs can also support efficient electric hot water vs gas hot water upgrades, and in some cases an electric hot water system rebate may apply when you move away from gas. Together, these hot water rebate NSW schemes can cut the installed cost of a new energy efficient hot water system by a significant percentage, shortening the payback period from many years down to just a few. When you add smart timers or solar‑diversion controls so your electric hot water installation or heat pump runs mainly on rooftop solar, the savings can grow even further.

If your current unit is ageing, noisy or costing a fortune to run, it is a good time to see whether your Kerewong home is ready for a hot water upgrade. Whether you are moving from gas to an all‑electric home, comparing solar hot water vs electric hot water, or simply need fast hot water repair or solar hot water repair, working with experienced hot water installers who specialise in heat pump and solar hot water is essential. With Kerewong’s strong solar resource and growing interest in sustainability, the right system can reduce bills, cut emissions and future‑proof your home. Reach out to trusted local experts for personalised advice on the best heat pump hot water system or solar hot water system for your place, and make your next hot water system upgrade a smart, long‑term investment.

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