Hot Water Systems in Grangefields
The 3335 postcode, covering Grangefields, Bonnie Brook, Plumpton, Rockbank and Thornhill Park and surrounding areas, is home to around 2,225 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 Grangefields and the 3335 area, 5,602 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 Grangefields's climate delivering an average of 4.2 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 3335
11th
State Wide
15th
Australia Wide
Hot Water Installation Grangefields
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 Grangefields
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterGrangefields
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 Grangefields
Compare heat pump hot water systems suitable for Grangefields'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 - Grangefields, 3335
Hot Water Demographics - Grangefields
Based on the Australian Bureau of Statistics 2021 Census (ABS), Grangefields has around 2,225 private dwellings, home to approximately 5,871 people. With an average household size of 2.8 people, and around 50 litres of hot water used per person each day in Australia, Grangefields households use approximately 140 litres of hot water daily, equating to a massive 0.3 million litres of hot water used across the suburb every single day.
Other census insights reinforce Grangefields's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Grangefields community is home to 739 couple families with children and 138 one-parent families, meaning a large proportion of households face substantial hot water demand. With 1,169 homes owned with a mortgage and 268 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.
Grangefields is converting hot water demand to efficient systems faster than many peers, with 251.8% of dwellings already upgraded.
Hot water systems in Grangefields
Across Grangefields, more homeowners are rethinking their old gas and electric hot water system and switching 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 about 2.8 people and more than 2,000 dwellings, many young families and mortgage holders are looking for ways to cut running costs without sacrificing comfort.
The local climate helps. Rockbank (Melton) records an annual mean daily solar exposure of around 15.1 MJ/m², or roughly 4.2 kWh/m² per day, which is solid sunlight for both a solar hot water heating system and a high efficiency heat pump. For households in Grangefields, that means upgrading from older gas or resistive electric units to an energy efficient hot water system can deliver substantial Annual Hot Water Energy Savings, especially when paired with rooftop solar. With a median household income of about $1,876 per week and most homes either owned with a mortgage or rented, switching to the most efficient hot water system is a practical way to keep bills under control while future‑proofing the home.
In 3335, demand for hot water installation has grown in step with the suburb. A typical Grangefields family in a three or four bedroom home can use a big chunk of their electricity just on hot water, so choosing between heat pump vs solar hot water or a modern electric hot water system matters. Many locals now combine a heat pump hot water installation with existing solar, or go for a solar hot water installation with electric boosting. Brands like Rheem heat pump hot water, Sanden heat pump and Rinnai solar hot water are popular choices, along with Rheem solar hot water and Chromagen solar hot water for those wanting a proven solar hot water tank replacement.
For a rough guide on savings compared with an old system, many Grangefields homes can expect:
• Old electric to heat pump hot water system: save around $350–$700 per year on bills. • Gas to heat pump hot water: save roughly $250–$550 per year. • Gas to solar hot water system: save about $200–$500 per year. • Old electric to modern electric hot water installation with rooftop solar: save around $250–$600 per year.
These ranges depend on usage, tariffs and whether you use timers or solar diversion to maximise self‑consumption.
Efficient hot water is no longer a niche choice here. In Grangefields and the broader 3335 postcode, there have already been 5,602 efficient hot water systems installed, including both heat pump and solar hot water installations. After only a handful of installs before 2012, numbers jumped sharply from 2013 onwards, with strong growth through 2014–2017 and another surge from 2020 to 2023 as more residents chased lower running costs and moved towards all‑electric homes. This trend shows a clear local interest in electrification, hot water repair and replacement that cuts emissions and makes better use of rooftop solar.
Even if you are just starting to think about hot water VIC options, it is worth understanding the incentives. Federal Small‑scale Technology Certificates (STCs) reduce the effective solar hot water price / cost and heat pump hot water price / cost, while Victorian programmes can add a solar hot water rebate, heat pump hot water rebate or electric hot water system rebate on top. For many Grangefields homeowners, these hot water rebate VIC schemes can trim the upfront hot water system price / cost by a substantial percentage, turning a four to seven year payback into something much shorter. When you combine rebates with smart tariffs, timers or solar‑diversion controls, an energy efficient hot water system can easily save hundreds of dollars a year and significantly lower your reliance on gas.
Choosing between solar hot water vs electric hot water or electric hot water vs gas hot water can feel confusing, but you do not need to work it out alone. If your current unit is ageing, running out of hot water or needing regular hot water repair, it is a good time to explore the best hot water system Australia can offer for your situation, whether that is the best heat pump hot water system, a premium Sanden heat pump, a Rinnai or Rheem solar hot water setup, or a quality Chromagen solar hot water system.
If you live in Grangefields and want to cut bills, reduce emissions and make the most of the area’s strong solar resource, now is a smart time to check whether your place is ready for a hot water upgrade. Whether you are moving away from gas, replacing an old electric unit or planning a new build, working with experienced hot water installers like us—specialists in heat pump, solar and efficient electric systems—can help you choose the right size, manage rebates and keep your home comfortable for years. Reach out to our trusted local experts for personalised advice on hot water VIC options and see how a modern system can make your home more sustainable and affordable.