Hot Water Systems in Terrey Hills
The 2084 postcode, covering Terrey Hills, Akuna Bay, Cottage Point and Duffys Forest and surrounding areas, is home to around 1,258 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 Terrey Hills and the 2084 area, 106 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 Terrey Hills'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 2084
353rd
State Wide
1385th
Australia Wide
Hot Water Installation Terrey Hills
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 Terrey Hills
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterTerrey Hills
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 Terrey Hills
Compare heat pump hot water systems suitable for Terrey Hills'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 - Terrey Hills, 2084
Hot Water Demographics - Terrey Hills
Based on the Australian Bureau of Statistics 2021 Census (ABS), Terrey Hills has around 1,258 private dwellings, home to approximately 3,550 people. With an average household size of 3 people, and around 50 litres of hot water used per person each day in Australia, Terrey Hills households use approximately 150 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 Terrey Hills's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Terrey Hills community is home to 323 couple families with children and 35 one-parent families, meaning a large proportion of households face substantial hot water demand. With 444 homes owned with a mortgage and 551 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.
Terrey Hills is converting hot water demand to efficient systems faster than many peers, with 8.4% of dwellings already upgraded.
Hot water systems in Terrey Hills
In Terrey Hills, more locals are rethinking their old hot water system and moving to energy efficient options like a heat pump hot water system, solar hot water system and modern electric hot water system. With most of the 1,192 dwellings here being separate houses and an average household size of 3 people, hot water demand is high – and so are energy bills if you are still on an old gas or electric tank.
The Terrey Hills AWS station records strong sunshine, with mean daily solar exposure of around 16.3 MJ/m² – roughly 4.5 kWh/m² per day – which is ideal for a solar hot water heating system or a high quality heat pump hot water system. Many households are owned outright or with a mortgage, and with median household income above $2,800 per week, upgrading from older gas or electric hot water to a more efficient hot water system is a logical next step. Swapping to an energy efficient hot water system can deliver substantial Annual Hot Water Energy Savings for Terrey Hills homeowners, especially when paired with rooftop solar.
Across 2084, there have already been 106 efficient hot water installations – mainly heat pump hot water installation and solar hot water installation – showing strong local interest. Installations peaked around 2009–2010, when 37 systems went in over two years, and there has been a steady trickle of new systems since, including fresh installs in 2024 and 2025. This reflects a growing shift towards electrification, lower running costs and getting ready for an all electric home that uses hot water NSW households can run largely from the sun.
For a typical Terrey Hills family, hot water can be one of the biggest single energy loads. Many larger homes with 3–4 bedrooms or more need a correctly sized system to avoid running out of hot water while still keeping bills down. Brands like Rheem heat pump hot water, Rheem solar hot water, Rinnai solar hot water and premium options such as Sanden heat pump units are common choices for those chasing the most efficient hot water system. Others prefer Chromagen solar hot water or similar, especially when replacing an ageing solar hot water tank. When comparing heat pump vs solar hot water or solar hot water vs electric hot water, your roof space, shading and existing switchboard all come into play.
Average annual bill savings from a smart upgrade in Terrey Hills can look like:
• Old electric to quality heat pump: $400–$900 per year • Gas storage to heat pump: $300–$700 per year • Gas to solar hot water system: $250–$650 per year • Old electric to modern electric hot water installation with rooftop solar: $300–$800 per year
On top of lower running costs, many households are motivated by reliability and fewer surprises. A planned solar hot water tank replacement or electric hot water installation is far less stressful than an emergency breakdown. Local installers can also help with hot water repair and solar hot water repair to extend the life of existing systems where it makes sense, and give clear guidance on hot water system price / cost, heat pump hot water price / cost and solar hot water price / cost so you can compare options fairly.
Hot Water Rebates, Tariffs & Savings
In Terrey Hills, interest in replacing old gas or electric hot water with efficient options is rising quickly. Homeowners are looking at the best hot water system Australia can offer for their needs, from the best heat pump hot water system through to a straightforward, energy efficient electric hot water system rebate upgrade. Federal incentives such as Small-scale Technology Certificates (STCs) apply to eligible heat pump and solar hot water systems, effectively acting as a solar hot water rebate or heat pump hot water rebate that reduces the upfront cost. NSW programs and retailer offers can also support heat pump hot water installation, solar hot water installation and efficient electric hot water vs gas hot water upgrades.
When you stack these hot water rebate NSW incentives together, it is common to see the system cost cut by a substantial percentage, with payback periods dropping to just a few years, especially if you already have rooftop solar. Using timers or solar diversion to run an electric hot water system during the middle of the day can further improve savings, making your hot water installation one of the smartest energy moves you can make.
If your hot water system is ageing, noisy or struggling to keep up, it is a good time to see whether your Terrey Hills home is ready for a hot water upgrade – from gas or an old electric tank to a modern heat pump or solar hot water system. Working with experienced local hot water installers like us, who specialise in heat pumps, solar and efficient electric systems, helps you tap into the suburb’s strong solar resources and growing sustainability focus. An upgraded system can reduce bills, cut emissions and future proof your home. Reach out to our trusted local team for personalised advice on hot water repair, replacement and installation tailored to Terrey Hills.