Hot Water Systems in Calomba
The 5501 postcode, covering Calomba, Avon, Dublin, Lewiston, Long Plains, Lower Light, Middle Beach, Parham, Port Gawler, Thompson Beach, Two Wells, Webb Beach, Wild Horse Plains and Windsor and surrounding areas, is home to around 3,168 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 Calomba and the 5501 area, 421 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 Calomba'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 5501
23rd
State Wide
654th
Australia Wide
Hot Water Installation Calomba
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 Calomba
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterCalomba
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 Calomba
Compare heat pump hot water systems suitable for Calomba'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 - Calomba, 5501
Hot Water Demographics - Calomba
Based on the Australian Bureau of Statistics 2021 Census (ABS), Calomba has around 3,168 private dwellings, home to approximately 7,648 people. With an average household size of 2.8 people, and around 50 litres of hot water used per person each day in Australia, Calomba households use approximately 140 litres of hot water daily, equating to a massive 0.4 million litres of hot water used across the suburb every single day.
Other census insights reinforce Calomba's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Calomba community is home to 688 couple families with children and 150 one-parent families, meaning a large proportion of households face substantial hot water demand. With 1,661 homes owned with a mortgage and 791 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.
Calomba is converting hot water demand to efficient systems faster than many peers, with 13.3% of dwellings already upgraded.
Hot water systems in Calomba
Across Calomba and the wider 5501 district, more households are rethinking their hot water system and shifting to energy efficient options like a heat pump hot water system, solar hot water system and modern electric hot water system. With an average household size of around 2.8 people and more than 2,800 dwellings, reliable hot water is a must, but so is keeping running costs under control as power prices rise.
Calomba’s sunny climate is a real advantage. Nearby Mallala records mean daily solar exposure of about 17.8 MJ/m², which is roughly 5 kWh/m² of sunshine a day across the year. That strong solar resource supports both a solar hot water heating system on the roof and a high efficiency heat pump hot water installation in the yard, helping families and farms cut their hot water energy use dramatically. With many homes owned with a mortgage and median household income sitting around $1,700 a week, upgrading from older gas or off‑peak electric units to an energy efficient hot water system is a logical next step to lock in long‑term savings.
In Calomba, hot water demand is driven by family households, tradies, and rural properties that often use more hot water than a city unit. Hot water can easily account for a quarter of a home’s electricity use, so choosing the most efficient hot water system really matters. Locals are comparing heat pump vs solar hot water, as well as solar hot water vs electric hot water, to see what best suits their roof space, water use and budget. Brands like Rheem heat pump hot water, Sanden heat pump and Rinnai solar hot water are increasingly common, alongside trusted names such as Chromagen solar hot water for both new builds and hot water tank replacement jobs.
Typical annual bill savings from a smart hot water upgrade in Calomba can look like:
• Old electric to heat pump hot water system: save about $400–$800 per year • Gas to heat pump hot water system: save about $300–$600 per year • Gas to solar hot water system: save about $250–$550 per year • Old electric to modern electric hot water installation with rooftop solar: save about $300–$700 per year
Over the years, Calomba has quietly built up a solid base of efficient systems. There have been 421 efficient hot water installations recorded in the 5501 postcode, combining both heat pump and solar hot water installation projects. Install numbers climbed strongly in the early 2000s, with peaks around 2003 and 2009, and have continued at a steady pace through to 2024 and 2025. This shows a consistent local interest in electrification, lower running costs and moving towards the best hot water system Australia can offer for rural and semi‑rural homes.
Hot Water Rebates, Tariffs & Savings
For Calomba households looking at hot water SA upgrades, there is growing interest in replacing old gas or ageing electric cylinders with a heat pump hot water system, a modern electric hot water system or a roof‑mounted solar hot water system. Federal incentives such as Small‑scale Technology Certificates (STCs) apply to eligible heat pump and solar hot water systems, effectively providing a solar hot water rebate or heat pump hot water rebate that cuts the upfront solar hot water price / cost or heat pump hot water price / cost. South Australian programs can also offer additional support, including an electric hot water system rebate in some schemes, making an energy efficient hot water system far more affordable. For many Calomba homes, these hot water rebate SA offers can reduce the system cost by a substantial percentage and shorten payback to just a few years, especially when paired with rooftop solar and smart timers or solar diversion controls. Combine this with expert hot water installation and ongoing hot water repair or solar hot water repair support, and it becomes much easier to step away from electric hot water vs gas hot water debates and simply choose what works best for your property.
If your current unit is old, leaking or costing a fortune to run, it is a good time to see whether a Rheem solar hot water system, Sanden heat pump, Rinnai solar hot water or another best heat pump hot water system could suit your place. Checking your hot water system price / cost options now can help you future‑proof your home, trim bills and cut emissions.
If you live in Calomba and want to make the most of the area’s strong solar resource and growing focus on sustainability, it is worth checking whether your home is ready for a hot water upgrade. Swapping from gas or an old electric unit to a modern heat pump hot water installation, solar hot water installation or efficient electric hot water installation can reduce bills, improve reliability and set you up for an all‑electric home. Talk with our experienced local hot water installers and solar hot water specialists for personalised advice on the most efficient hot water system for your property, available hot water rebate SA options, and the right time to schedule hot water repair or solar hot water tank replacement—then decide with confidence.