Hot Water Systems in South Wentworthville

The 2145 postcode, covering South Wentworthville, Constitution Hill, Girraween, Greystanes, Mays Hill, Pemulwuy, Pendle Hill, Wentworthville and Westmead and surrounding areas, is home to around 31,174 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 South Wentworthville and the 2145 area, 858 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 South Wentworthville's climate delivering an average of 4.5 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 2145

76^th

State Wide

347^th

Australia Wide

Hot Water Installation South Wentworthville

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 South Wentworthville

* Data from the Bureau of Meteorology. Closest station: N/A.

Solar Powered Hot WaterSouth Wentworthville

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 South Wentworthville

Compare heat pump hot water systems suitable for South Wentworthville'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 - South Wentworthville, 2145

Hot Water Demographics - South Wentworthville

Based on the Australian Bureau of Statistics 2021 Census (ABS), South Wentworthville has around 31,174 private dwellings, home to approximately 82,311 people. With an average household size of 2.9 people, and around 50 litres of hot water used per person each day in Australia, South Wentworthville households use approximately 145 litres of hot water daily, equating to a massive 4.5 million litres of hot water used across the suburb every single day.

Other census insights reinforce South Wentworthville's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The South Wentworthville community is home to 9,358 couple families with children and 1,242 one-parent families, meaning a large proportion of households face substantial hot water demand. With 9,222 homes owned with a mortgage and 6,517 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.

South Wentworthville is converting hot water demand to efficient systems faster than many peers, with 2.8% of dwellings already upgraded.

Hot water systems in South Wentworthville

Across South Wentworthville, more households are swapping old gas units for an energy efficient hot water system that keeps bills down and showers steaming. With an average household size of around 2.9 people and plenty of family homes among the 28,000+ dwellings in 2145, hot water is one of the biggest chunks of energy use. As power prices climb and many locals work hard to meet a median mortgage of about $2,239 a month or rents around $425 a week, upgrading to a modern heat pump hot water system, solar hot water system or efficient electric hot water system is a logical next step.

Our climate helps. South Wentworthville enjoys strong sunshine, with Merrylands’ weather station showing mean solar exposure of about 16.2 MJ/m² a day – roughly 4.5 kWh/m². That level of sun is ideal for a solar hot water heating system or a high-quality sanden heat pump or rheem heat pump hot water unit that can draw free heat from the air. For many owner occupiers – more than 15,700 homes are owned outright or with a mortgage – the combination of rooftop solar and an energy efficient hot water system is one of the easiest ways to cut running costs.

In 2145, there have already been 858 efficient hot water installations, mainly heat pump and solar hot water installation jobs. Install numbers jumped sharply in 2009 and 2010, then settled into a steady flow of upgrades each year right through to 2024 and 2025. That trend shows growing interest in electrification, lower bills and moving away from gas hot water as systems age and hot water repair costs mount.

For a typical South Wentworthville family, hot water can be 20–30% of household energy use. Swapping from an old electric hot water system to a heat pump hot water system or quality rheem solar hot water or chromagen solar hot water setup can make a real dent in bills. Many locals are also looking at solar hot water vs electric hot water and heat pump vs solar hot water to decide what suits their roof, budget and lifestyle. Brands like Sanden and Rinnai are popular for the best heat pump hot water system options, while Rheem and Chromagen offer reliable solar hot water tank replacement and new installs.

Here are typical annual bill savings many South Wentworthville homes are seeing:

• Old electric to heat pump hot water installation: about $400–$800 a year • Gas to heat pump: about $300–$600 a year • Gas to solar hot water installation: about $250–$550 a year • Old electric to modern electric hot water installation with solar: about $250–$500 a year

When people ask about hot water system price or cost, heat pump hot water price or cost, or solar hot water price or cost, rebates are a big part of the conversation. Federal Small-scale Technology Certificates (STCs) and NSW hot water rebate schemes can significantly reduce upfront costs for South Wentworthville homeowners. A solar hot water rebate, heat pump hot water rebate or electric hot water system rebate can effectively cut the system cost by a sizeable percentage, bringing the best hot water system Australia has to offer within reach. Combine that with rooftop solar, timers or solar diversion, and payback periods for an energy efficient hot water system can drop to just a few years.

Overall, efficient hot water nsw options are helping local households choose the most efficient hot water system for their needs, whether that is solar hot water vs electric hot water or electric hot water vs gas hot water. With a solid track record of solar hot water repair, hot water repair and new hot water installation across the area, experienced installers can help you compare systems, tariffs and hot water rebate nsw options.

If your current unit is older, noisy or struggling to keep up, it may be the perfect time to check whether your South Wentworthville home is ready for a hot water upgrade. Talk with experienced local heat pump and solar hot water specialists who understand the suburb’s energy-efficiency potential and growing interest in sustainability. The right efficient hot water system can trim your bills, cut emissions and future-proof your home – connect with trusted local experts for personalised advice with us today.

Nearby Suburbs

Constitution Hill Girraween Greystanes Mays Hill Pemulwuy Pendle Hill South Wentworthville Wentworthville Westmead