Hot Water Systems in Nunawading
The 3131 postcode, covering Nunawading, Brentford Square and Forest Hill and surrounding areas, is home to around 9,267 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 Nunawading and the 3131 area, 757 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 Nunawading's climate delivering an average of 4.1 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 3131
101st
State Wide
401st
Australia Wide
Hot Water Installation Nunawading
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 Nunawading
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterNunawading
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 Nunawading
Compare heat pump hot water systems suitable for Nunawading'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 - Nunawading, 3131
Hot Water Demographics - Nunawading
Based on the Australian Bureau of Statistics 2021 Census (ABS), Nunawading has around 9,267 private dwellings, home to approximately 21,908 people. With an average household size of 2.5 people, and around 50 litres of hot water used per person each day in Australia, Nunawading households use approximately 125 litres of hot water daily, equating to a massive 1.2 million litres of hot water used across the suburb every single day.
Other census insights reinforce Nunawading's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Nunawading community is home to 2,051 couple families with children and 303 one-parent families, meaning a large proportion of households face substantial hot water demand. With 2,918 homes owned with a mortgage and 3,012 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.
Nunawading is converting hot water demand to efficient systems faster than many peers, with 8.2% of dwellings already upgraded.
Hot water systems in Nunawading
Across Nunawading, more homeowners are switching from old gas and electric units to an energy efficient hot water system that keeps bills down and comfort up. With an average household size of around 2.5 people and more than 8,600 dwellings in the 3131 postcode, reliable hot water is non‑negotiable. At the same time, rising energy costs and a strong local interest in sustainability are making options like a heat pump hot water system, solar hot water system and modern electric hot water system very attractive.
Nunawading’s climate is well suited to efficient hot water. The nearby Mitcham weather station records mean daily solar exposure of about 14.7 MJ/m², or roughly 4.1 kWh/m² per day, which is ideal for a solar hot water heating system and supports strong performance from heat pump hot water even in cooler months. With many families and over 3,000 homes owned outright and nearly 3,000 with a mortgage, upgrading to the most efficient hot water system is a logical next step to protect budgets and add value. Households replacing older gas or resistive electric systems can see substantial annual hot water energy savings, especially when paired with rooftop solar.
In 3131, typical three‑ and four‑bedroom homes drive steady hot water demand for showers, dishwashers and washing machines. That makes choosing the best hot water system Australia offers for your needs important. Brands like Rheem, Rinnai, Sanden and Thermann are all common in the local market, offering options from rheem solar hot water and rheem heat pump hot water to rinnai solar hot water and high‑performance sanden heat pump systems. Many locals are weighing up heat pump vs solar hot water, or comparing solar hot water vs electric hot water to decide what fits their roof space, budget and lifestyle.
For a rough guide, here are typical average annual bill savings when you choose the right hot water installation in Nunawading:
• Old electric to heat pump hot water system: $400–$800 per year • Gas to heat pump hot water system: $300–$600 per year • Gas to solar hot water system: $250–$550 per year • Old electric to modern electric hot water installation with solar: $250–$500 per year
Across Nunawading there have already been 757 efficient hot water installations recorded, including both heat pump hot water installation and solar hot water installation. Install numbers were modest in the early 2000s, then jumped sharply around 2009 and 2015 as rebates improved, with solid uptake continuing through 2018–2020. More recently, installations in 2022–2024 have stayed strong, and 2025 is tracking as another big year. This steady growth shows how quickly locals are embracing electrification, lower running costs and cleaner hot water VIC wide.
When you are comparing hot water system price / cost, it pays to factor in rebates and running costs, not just the sticker. A heat pump hot water price / cost may look higher upfront than a basic electric hot water system, but the long‑term savings are usually far better. The same applies to solar hot water price / cost, especially if you are also considering a solar hot water tank replacement or solar hot water repair on an older unit. For many homes, a modern energy efficient hot water system is the fastest way to cut hot water VIC bills without sacrificing comfort.
Hot Water Rebates, Tariffs & Savings
In Nunawading, there is growing interest in replacing old gas or electric hot water with efficient options like heat pumps, newer electric hot water systems or a solar hot water heating system. Homeowners can often access Federal Government incentives through Small‑scale Technology Certificates (STCs) on eligible systems, which effectively reduce the hot water system price by hundreds of dollars. On top of that, state‑based schemes can offer a heat pump hot water rebate or solar hot water rebate, and in some cases an electric hot water system rebate when moving away from gas. These hot water rebate VIC programs can bring the upfront heat pump hot water price or solar hot water price down significantly, sometimes cutting the payback period to just a few years. Combine that with timers or solar diversion to heat water during the middle of the day, and you can squeeze even more value out of your rooftop solar.
If your current unit is nearing the end of its life, needing frequent hot water repair, or you are comparing electric hot water vs gas hot water, it is a good time to see whether a heat pump, rheem solar hot water, rinnai solar hot water, chromagen solar hot water or another efficient option might be right for you. Solar hot water repair or solar hot water tank replacement is also a chance to reassess whether an upgrade could deliver better performance and lower bills.
If you live in Nunawading and your system is older, noisy or unreliable, it is worth checking whether your home is ready for a hot water upgrade. Moving from gas or an old electric hot water system to a heat pump or solar hot water system can cut bills, reduce emissions and future‑proof your place as energy prices rise. Talk with experienced local hot water installers like us—heat pump and solar hot water specialists—who understand hot water systems Nunawading homes rely on, and get personalised advice on the best heat pump hot water system or efficient electric option for your household.