Hot Water Systems in Gillman
The 5013 postcode, covering Gillman, Ottoway, Pennington, Rosewater, Rosewater East and Wingfield and surrounding areas, is home to around 4,399 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 Gillman and the 5013 area, 146 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 Gillman's climate delivering an average of 4.9 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 5013
113rd
State Wide
1210th
Australia Wide
Hot Water Installation Gillman
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 Gillman
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterGillman
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 Gillman
Compare heat pump hot water systems suitable for Gillman'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 - Gillman, 5013
Hot Water Demographics - Gillman
Based on the Australian Bureau of Statistics 2021 Census (ABS), Gillman has around 4,399 private dwellings, home to approximately 9,985 people. With an average household size of 2.4 people, and around 50 litres of hot water used per person each day in Australia, Gillman households use approximately 120 litres of hot water daily, equating to a massive 0.5 million litres of hot water used across the suburb every single day.
Other census insights reinforce Gillman's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Gillman community is home to 724 couple families with children and 261 one-parent families, meaning a large proportion of households face substantial hot water demand. With 1,513 homes owned with a mortgage and 1,067 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.
Gillman is converting hot water demand to efficient systems faster than many peers, with 3.3% of dwellings already upgraded.
Hot water systems in Gillman
In Gillman and the wider 5013 area, more households are looking at energy efficient hot water options like a heat pump hot water system, solar hot water system and modern electric hot water system to tame rising power bills. With an average household size of around 2.4 people and more than 3,000 separate houses, most homes here use a lot of hot water for showers, washing and everyday living. Many properties are still on older gas or resistive electric units, so upgrading to a more efficient hot water system is a logical next step to cut running costs.
Gillman is well suited to efficient hot water technology. The local weather station at Gillman Yard records mean daily solar exposure of about 17.8 MJ/m², which works out to roughly 4.9 kWh of solar energy per square metre per day across the year. That strong sunlight helps a solar hot water heating system and a heat pump hot water system perform well, especially when paired with rooftop solar. With median household income in the postcode sitting around $1,254 per week and many families balancing mortgages and rent, shifting to an energy efficient hot water system can make a noticeable dent in bills over the long term.
Across 5013 there is a mix of homeowners and renters, with more than 2,500 homes owned outright or with a mortgage. Owners in suburbs like Gillman are increasingly comparing heat pump vs solar hot water, as well as solar hot water vs electric hot water, to work out what suits their roof, budget and lifestyle. For some, the most efficient hot water system is a high quality heat pump hot water installation; for others it is a roof-mounted solar hot water installation with electric boost. Brands such as Rheem heat pump hot water, Rheem solar hot water, Rinnai solar hot water and premium systems like Sanden heat pump units are all common options when people search for the best hot water system Australia can offer.
Typical hot water installation choices in Gillman include replacing an old gas unit with an electric hot water installation, upgrading to a solar hot water system with a new solar hot water tank replacement, or going all-electric with a high efficiency heat pump. A modern electric hot water system can work well when matched with rooftop PV and timers, while a solar hot water heating system or heat pump can slash the share of hot water energy use in your overall household consumption. When you factor in the hot water system price / cost against long term savings, many locals find that an energy efficient hot water system pays for itself in just a few years.
For Gillman, realistic average annual bill savings from a hot water upgrade often 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 solar hot water system: $200–$550 per year • Old electric to modern electric hot water with solar: $200–$450 per year
In the 5013 postcode there have already been 146 efficient hot water systems installed, combining both heat pump and solar hot water installation jobs. Installations picked up in years like 2003, 2010 and 2012, each seeing more than a dozen systems go in, and there has been steady activity right through to 2024 and 2025. This trend shows growing interest in hot water SA upgrades, electrification and lower running costs, as households move away from gas hot water and older units towards the best heat pump hot water system or efficient solar options.
Hot Water Rebates, Tariffs & Savings
Right across Gillman there is strong interest in replacing old gas or electric systems with efficient alternatives. Homeowners are weighing up electric hot water vs gas hot water, and often pairing a new system with solar panels. Federal incentives through Small-scale Technology Certificates (STCs) apply to eligible solar hot water systems and heat pump hot water systems, effectively acting as a solar hot water rebate or heat pump hot water rebate that discounts the upfront solar hot water price / cost or heat pump hot water price / cost. South Australian programmes can also provide a hot water rebate SA for certain efficient systems, and there may be an electric hot water system rebate available when shifting away from gas.
When you combine these rebates with smart tariffs, timers and solar-diversion, the real hot water system price / cost to a Gillman household can drop significantly. Many families see hundreds of dollars per year shaved off their bills, and the payback period for a new solar hot water system or heat pump can be cut to just a handful of years. Ongoing hot water repair and solar hot water repair services in the area also help keep systems running efficiently so you continue to enjoy savings.
If you live in Gillman and your current unit is ageing, noisy or costly, it is a good time to check whether your place is ready for a hot water upgrade. Whether you are moving from gas to a heat pump hot water installation, considering solar hot water repair and tank replacement, or simply want the most efficient hot water system to pair with your solar, working with experienced hot water installers matters. With Gillman’s strong solar resource and growing focus on sustainability, efficient hot water systems can help reduce bills, cut emissions and future-proof your home. Connect with trusted local experts for personalised advice and find the right hot water solution for your property today, taking full advantage of available hot water rebate SA options and modern technology.