Hot Water Systems in Underdale
The 5032 postcode, covering Underdale, Brooklyn Park and Lockleys and surrounding areas, is home to around 5,913 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 Underdale and the 5032 area, 213 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 Underdale's climate delivering an average of 4.8 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 5032
72nd
State Wide
993rd
Australia Wide
Hot Water Installation Underdale
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 Underdale
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterUnderdale
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 Underdale
Compare heat pump hot water systems suitable for Underdale'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 - Underdale, 5032
Hot Water Demographics - Underdale
Based on the Australian Bureau of Statistics 2021 Census (ABS), Underdale has around 5,913 private dwellings, home to approximately 12,914 people. With an average household size of 2.4 people, and around 50 litres of hot water used per person each day in Australia, Underdale households use approximately 120 litres of hot water daily, equating to a massive 0.7 million litres of hot water used across the suburb every single day.
Other census insights reinforce Underdale's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Underdale community is home to 1,089 couple families with children and 181 one-parent families, meaning a large proportion of households face substantial hot water demand. With 1,705 homes owned with a mortgage and 1,826 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.
Underdale is converting hot water demand to efficient systems faster than many peers, with 3.6% of dwellings already upgraded.
Hot water systems in Underdale
Across Underdale and the 5032 postcode, more homeowners are switching to energy efficient hot water systems to keep bills down and move away from gas. With an average household size of around 2.4 people and more than 5,400 dwellings, families and downsizers alike are looking for a hot water system that is reliable, affordable to run and future proof. Median household incomes are solid, but with mortgages and rents to cover, wasting money on an old gas or electric hot water system simply does not make sense.
Underdale’s climate is ideal for efficient hot water. The local weather station at West Terrace records average solar exposure of about 17.3 MJ/m² a day, which is roughly 4.8 kWh/m² of sunshine daily across the year. That strong sunlight helps both a solar hot water system and a heat pump hot water system perform well, especially when paired with rooftop solar. Upgrading from an older gas or resistive electric hot water system to a modern heat pump hot water, solar hot water heating system or efficient electric hot water system can cut your hot water energy use by more than half, delivering meaningful Annual Hot Water Energy Savings for Underdale households.
In 5032 there is a mix of separate houses and more than 1,000 flats and apartments, so hot water demand varies from compact one bedroom units to busy four bedroom family homes. Hot water typically accounts for 20–30% of a home’s energy use, so choosing the most efficient hot water system can have a big impact. Many owners are weighing up heat pump vs solar hot water, or solar hot water vs electric hot water, to find the best hot water system Australia has to offer for their situation.
Typical annual bill savings in Underdale look like: • Old electric to heat pump hot water system: $350–$700 per year • Gas to heat pump hot water system: $250–$600 per year • Gas to roof mounted solar hot water system: $200–$550 per year • Old electric to modern electric hot water installation with solar: $250–$500 per year
Brands like Rheem heat pump hot water, Rheem solar hot water, Rinnai solar hot water and Sanden heat pump units are popular locally for those chasing the most efficient hot water system. Many homes also use Chromagen solar hot water or similar systems, and when a solar hot water tank replacement is needed, owners often take the opportunity to upgrade to a more energy efficient hot water system rather than like-for-like.
In Underdale, 213 efficient hot water systems have already been installed, combining both heat pump and solar hot water installation projects. Install numbers rose strongly between 2003 and 2011, with peak years such as 2009 and 2011 each seeing 23 systems installed, and there has been a steady trickle of new systems every year right through to 2025. This pattern shows growing interest in hot water SA electrification, lower running costs and cleaner energy, especially as more homes add rooftop solar and look to replace gas.
Hot Water Rebates, Tariffs & Savings
Right now there is strong interest in Underdale in replacing ageing gas or electric units with a heat pump hot water system, a modern electric hot water system or a solar hot water system. Federal incentives through Small-scale Technology Certificates (STCs) apply to eligible heat pump and solar hot water systems, effectively acting as an upfront discount. On top of that, South Australian programs can provide a heat pump hot water rebate, solar hot water rebate or electric hot water system rebate in certain circumstances, all helping to reduce the heat pump hot water price / cost or solar hot water price / cost. Together these hot water rebate SA schemes can trim the system cost by a substantial percentage and shorten the payback period to just a few years, especially if you run the system on a solar-friendly tariff, use timers, or add solar-diversion so your hot water is mostly heated by your own panels. For many households, shifting from electric hot water vs gas hot water towards an all-electric, energy efficient hot water system can save hundreds of dollars a year.
If you are in Underdale and your hot water system is getting older, running out of hot water or needing regular hot water repair, it is a good time to explore a hot water upgrade. Whether you are comparing heat pump vs solar hot water, looking at electric hot water vs gas hot water, or simply want the best heat pump hot water system for your family, experienced local installers can help. From hot water installation and solar hot water repair through to heat pump hot water installation and electric hot water installation, working with trusted specialists ensures your system is correctly sized, eligible for hot water rebate SA incentives and set up for low running costs. Underdale’s strong solar resources and growing focus on sustainability make it a smart place to invest in efficient hot water—connect with our local hot water experts for personalised advice on the right solution for your home or business today.