Hot Water Systems in Serpentine
The 3517 postcode, covering Serpentine, Bullabul, Bears Lagoon, Brenanah, Glenalbyn, Inglewood, Jarklin, Kingower, Kurting, Powlett Plains, Rheola and Salisbury West and surrounding areas, is home to around 717 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 Serpentine and the 3517 area, 186 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 Serpentine'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 3517
299th
State Wide
1066th
Australia Wide
Hot Water Installation Serpentine
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 Serpentine
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterSerpentine
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 Serpentine
Compare heat pump hot water systems suitable for Serpentine'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 - Serpentine, 3517
Hot Water Demographics - Serpentine
Based on the Australian Bureau of Statistics 2021 Census (ABS), Serpentine has around 717 private dwellings, home to approximately 1,312 people. With an average household size of 2.2 people, and around 50 litres of hot water used per person each day in Australia, Serpentine households use approximately 110 litres of hot water daily, equating to a massive 0.1 million litres of hot water used across the suburb every single day.
Other census insights reinforce Serpentine's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Serpentine community is home to 91 couple families with children and 15 one-parent families, meaning a large proportion of households face substantial hot water demand. With 173 homes owned with a mortgage and 296 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.
Serpentine is converting hot water demand to efficient systems faster than many peers, with 25.9% of dwellings already upgraded.
Hot water systems in Serpentine
Across Serpentine, more homeowners are swapping old gas units and ageing cylinders for modern, energy efficient hot water systems. With most of the 587 local dwellings being separate houses and an average household size of 2.2 people, a reliable hot water system is essential for families, retirees and farm properties alike. Rising energy costs and a median household income of $935 a week mean it makes sense to squeeze more value from every kilowatt-hour.
Serpentine’s climate is ideal for efficient hot water VIC. The local weather station records an impressive 17.5 MJ/m² of solar exposure a day on average – roughly 4.9 kWh/m² – giving both a solar hot water system and a heat pump hot water system plenty of free energy to work with. Upgrading from older gas or electric hot water to a modern heat pump hot water installation, solar hot water installation or efficient electric hot water installation can slash annual running costs while still delivering strong water pressure and comfort.
In postcode 3517, demand for hot water is steady rather than extreme, with most homes having three or four bedrooms and a mix of working families and over‑65s. Many properties still run a basic electric hot water system or gas storage unit, so the opportunity for community hot water energy savings is huge. A well-sized solar hot water heating system or the most efficient hot water system using a quality heat pump can cut hot water energy use by more than half, especially when paired with rooftop solar.
Typical bill savings for Serpentine households can look like:
• Old electric to heat pump hot water system: save around $350–$700 per year. • Gas storage to heat pump hot water: save roughly $250–$600 per year. • Gas to solar hot water system: save about $200–$550 per year. • Old electric to modern electric hot water system with solar: save around $200–$450 per year.
Brands like Rheem heat pump hot water and Rheem solar hot water are popular for robust, all‑round performance, while Sanden heat pump units are known as some of the best heat pump hot water system options in Australia for ultra‑low running costs. Rinnai solar hot water and Chromagen solar hot water systems are also common choices for those wanting a long‑lasting solar hot water tank replacement that works well with existing PV. Locals comparing heat pump vs solar hot water, or solar hot water vs electric hot water, often weigh up roof space, roof orientation, noise, upfront hot water system price / cost and how much hot water they use morning versus afternoon.
Serpentine already has a strong track record with efficient hot water, with 186 heat pump and solar hot water systems installed in the postcode. Installations surged in 2009 with 119 systems going in as rebates peaked, then continued steadily from 2013 onwards with regular installs each year through to 2025. This ongoing pattern shows a clear shift toward electrification, lower running costs and more energy efficient hot water system choices across the district.
Hot Water Rebates, Tariffs & Savings
Interest in replacing old gas or electric units with efficient options like heat pump hot water, modern electric hot water system upgrades or a solar hot water heating system is growing in Serpentine. Homeowners here can access Australian Government incentives such as Small‑scale Technology Certificates (STCs), which reduce the effective heat pump hot water price / cost or solar hot water price / cost at the point of sale. On top of that, Victorian hot water rebate VIC programs often provide a specific heat pump hot water rebate or solar hot water rebate, and there may be an electric hot water system rebate when moving away from gas.
For many Serpentine households, these discounts can cut the upfront hot water system price / cost by 20–40%, turning a long‑term investment into a much quicker payback. When you add the annual bill savings – commonly hundreds of dollars per year – payback periods for the best hot water system Australia can drop to just a few years, especially if you use timers or solar diversion to run your electric hot water vs gas hot water at the cheapest times. Careful tariff selection and load shifting can make an energy efficient hot water system one of the smartest upgrades in the home.
If your current unit is more than 10 years old, running on gas or off‑peak electric, now is a good time to check whether your Serpentine home is ready for a hot water upgrade. Whether you are considering a rheem solar hot water system, rinnai solar hot water, a sanden heat pump or another efficient option, working with experienced hot water installation and hot water repair specialists is essential. Local installers who understand hot water VIC conditions can help you compare heat pump vs solar hot water, explain solar hot water repair options, walk you through the hot water rebate VIC programs and recommend the best heat pump hot water system or electric hot water vs gas hot water choice for your property. Reach out to trusted local experts for personalised advice with us and future‑proof your home with lower bills, lower emissions and reliable hot water all year round.