Hot Water Systems in Ermington
The 2115 postcode, covering Ermington and surrounding areas, is home to around 4,590 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 Ermington and the 2115 area, 163 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 Ermington's climate delivering an average of 4.4 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 2115
290th
State Wide
1137th
Australia Wide
Hot Water Installation Ermington
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 Ermington
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterErmington
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 Ermington
Compare heat pump hot water systems suitable for Ermington'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 - Ermington, 2115
Hot Water Demographics - Ermington
Based on the Australian Bureau of Statistics 2021 Census (ABS), Ermington has around 4,590 private dwellings, home to approximately 11,936 people. With an average household size of 2.8 people, and around 50 litres of hot water used per person each day in Australia, Ermington households use approximately 140 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 Ermington's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Ermington community is home to 1,204 couple families with children and 199 one-parent families, meaning a large proportion of households face substantial hot water demand. With 1,414 homes owned with a mortgage and 937 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.
Ermington is converting hot water demand to efficient systems faster than many peers, with 3.6% of dwellings already upgraded.
Hot water systems in Ermington
Across Ermington, more households are rethinking their old gas and electric hot water and switching to a more energy efficient hot water system. With power prices rising and many families aiming for lower emissions, options like a heat pump hot water system, solar hot water system and modern electric hot water system are becoming the logical next step. In a suburb with around 4,274 occupied dwellings and an average household size of 2.8 people, hot water demand is steady, especially for busy families and multi‑bedroom homes. The median household income sits just under $2,000 a week, so cutting running costs without sacrificing comfort is a real priority.
Ermington’s climate is well suited to efficient hot water. At nearby Sydney Olympic Park, the average annual solar exposure is about 15.9 MJ/m² per day, or roughly 4.4 kWh/m²/day, which is strong support for both a solar hot water heating system and a high‑quality heat pump hot water system. That sunlight, combined with the suburb’s mix of separate houses and townhouses, makes solar hot water installation and heat pump hot water installation very attractive for homeowners looking for the most efficient hot water system they can reasonably fit on site.
For many homes, hot water can use 20–30% of total household energy, so upgrading your hot water system can deliver meaningful savings. In Ermington 2115, families comparing heat pump vs solar hot water often land on brands like Rheem, Rinnai, Sanden and Thermann, which offer efficient options across heat pump, solar and electric. Rheem solar hot water and Rinnai solar hot water units are popular for roofs with good north‑facing exposure, while a Sanden heat pump or Rheem heat pump hot water system can be ideal where roof space is tight or shading is an issue. Modern electric hot water installation, especially when paired with rooftop solar, can also be a smart move if you want a simple, robust system that runs mostly on your own solar.
Average annual bill savings will vary with usage and tariffs, but realistic ranges in Ermington look like:
• Old electric to heat pump hot water system: around $350–$700 per year • Gas to heat pump hot water: around $250–$600 per year • Gas to solar hot water system: around $200–$550 per year • Old electric to modern electric hot water with solar: around $200–$500 per year
Local data shows 163 efficient hot water systems (heat pump and solar) have already been installed in the 2115 postcode. Installations climbed sharply around 2008–2010, peaking at 50 systems in 2010, with smaller but steady numbers in later years. That early wave of solar hot water installation and heat pump hot water installation reflects strong local interest in electrification, lower running costs and moving away from gas hot water where possible. Many of those systems are now reaching the age where solar hot water repair, hot water repair or even a solar hot water tank replacement may be timely, and some households are eyeing the best heat pump hot water system as a next upgrade.
When comparing electric hot water vs gas hot water, or solar hot water vs electric hot water, it is worth looking at both running costs and the hot water system price or cost up‑front. A heat pump hot water price or cost is usually higher initially, but in NSW there are federal Small‑scale Technology Certificates (STCs) plus state‑based heat pump hot water rebate and solar hot water rebate programs that can significantly cut the sticker price. Similar incentives may apply to eligible electric hot water system rebate offers when replacing older, inefficient units. For Ermington homeowners, these hot water rebate nsw schemes can reduce the solar hot water price or cost or the heat pump hot water price or cost by a substantial percentage. Combined with typical bill savings of a few hundred dollars a year, payback periods can shorten to just a handful of years, especially if you use timers or solar diversion to run your energy efficient hot water system when your solar is generating.
If your current unit is ageing, noisy or expensive to run, now is a good time to check whether your Ermington home is ready for a hot water upgrade. Whether you are moving from gas to an all‑electric hot water system, comparing solar hot water vs electric hot water, or looking at a new solar hot water repair or replacement, working with experienced hot water nsw installers who specialise in heat pumps and solar makes all the difference. With Ermington’s strong solar resource and growing focus on sustainability, the best hot water system Australia can offer your home will help cut bills, reduce emissions and future‑proof your property. For personalised advice on the right mix of comfort, reliability and savings, connect with trusted local experts for tailored hot water installation and hot water repair support with us.