Hot Water Systems in Fairfield
The 3078 postcode, covering Fairfield and Alphington and surrounding areas, is home to around 5,505 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 Fairfield and the 3078 area, 442 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 Fairfield'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 3078
178th
State Wide
628th
Australia Wide
Hot Water Installation Fairfield
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 Fairfield
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterFairfield
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 Fairfield
Compare heat pump hot water systems suitable for Fairfield'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 - Fairfield, 3078
Hot Water Demographics - Fairfield
Based on the Australian Bureau of Statistics 2021 Census (ABS), Fairfield has around 5,505 private dwellings, home to approximately 11,360 people. With an average household size of 2.3 people, and around 50 litres of hot water used per person each day in Australia, Fairfield households use approximately 115 litres of hot water daily, equating to a massive 0.6 million litres of hot water used across the suburb every single day.
Other census insights reinforce Fairfield's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Fairfield community is home to 936 couple families with children and 168 one-parent families, meaning a large proportion of households face substantial hot water demand. With 1,491 homes owned with a mortgage and 1,506 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.
Fairfield is converting hot water demand to efficient systems faster than many peers, with 8.0% of dwellings already upgraded.
Hot water systems in Fairfield
Across Fairfield, more homeowners are swapping old gas and electric units for an energy efficient hot water system that keeps bills down without sacrificing comfort. With an average household size of around 2.3 people and more than 4,900 occupied dwellings, there is strong demand for reliable hot water installation, hot water repair and smart upgrades that suit everything from family homes to modern apartments.
Fairfield’s sunny climate helps. The local Northcote weather station records mean daily solar exposure of about 14.9 MJ/m², which works out to roughly 4.1 kWh/m² per day over the year. That is plenty of free energy to support a solar hot water system or heat pump hot water system, especially when paired with rooftop solar. With solid median household incomes and a mix of homes owned outright and with a mortgage, many households are at the point where upgrading from an old electric hot water system or gas hot water to a modern, energy efficient hot water system is the logical next step. Annual hot water energy savings can easily reach hundreds of dollars when you move to the most efficient hot water system for your home.
In Fairfield 3078, a typical two to three bedroom home has steady hot water demand from showers, washing and dishwashers, so choosing the best hot water system Australia can offer your budget really matters. For many households, the big decision is heat pump vs solar hot water. A quality heat pump hot water system can pull heat from the air even on cooler Melbourne days, while a solar hot water heating system uses roof collectors and a solar hot water tank to capture the sun. Brands like Rheem heat pump hot water, Sanden heat pump and Rinnai solar hot water are popular options locally, along with chromagen solar hot water on some established homes. Fairfield also has plenty of apartments where a compact electric hot water installation or shared heat pump hot water installation can work well.
To give you a feel for savings, here are some typical annual bill reductions when you upgrade your hot water system:
• Old electric to heat pump hot water system: save roughly $350–$700 per year. • Gas to heat pump hot water system: save around $250–$500 per year. • Gas to solar hot water system: save about $200–$450 per year. • Old electric to modern electric hot water system with solar: save about $200–$400 per year.
These figures will vary with your hot water system price, household size and how much solar you have, but they show why Fairfield residents are looking closely at solar hot water vs electric hot water and electric hot water vs gas hot water.
Efficient hot water is not just theory in Fairfield. There have already been 442 efficient hot water systems installed in the postcode, including both heat pump and solar hot water installation projects. Installations started slowly in the mid‑2000s, ramped up through 2008–2010, saw another surge around 2015 and 2019, and continue steadily through to 2024 and 2025. This trend shows growing local interest in electrification, lower running costs and replacing ageing systems with the best heat pump hot water system or modern solar option. As more homes add solar PV, pairing that with a solar hot water system or an electric hot water system on a timer is becoming an easy win.
Hot Water Rebates, Tariffs & Savings
Fairfield homeowners are increasingly exploring hot water rebate VIC programs to cut the heat pump hot water price or solar hot water price and bring the overall hot water system cost down. At a national level, the Small‑scale Technology Certificates (STCs) scheme effectively acts as a solar hot water rebate or heat pump hot water rebate, giving an upfront discount on eligible systems such as Rheem solar hot water, Sanden heat pump or other approved brands. On top of that, Victorian programs can offer extra support for efficient heat pump hot water installation, solar hot water repair and even some electric hot water system rebate options when you are replacing old, inefficient units. Combined, these incentives can trim the system cost by a substantial percentage and shorten payback to just a few years, especially if you use timers or solar diversion to run your electric hot water installation when your panels are producing.
If your current unit is older, noisy, running out of hot water or driving up your bills, it is a good time to see whether your Fairfield home is ready for a hot water upgrade. Whether you are moving from gas to an all‑electric home, comparing solar hot water vs electric hot water, or simply want the most efficient hot water system you can afford, experienced local hot water VIC installers can help you weigh up options, rebates and running costs. With Fairfield’s strong solar potential and growing focus on sustainability, an energy efficient hot water system is a simple way to reduce bills, cut emissions and future‑proof your property. Reach out to trusted local specialists for personalised advice, hot water installation and hot water repair support tailored to your Fairfield home or business.