Hot Water Systems in Waikiki
The 6169 postcode, covering Waikiki, Safety Bay, Shoalwater and Warnbro and surrounding areas, is home to around 14,736 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 Waikiki and the 6169 area, 3,073 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 Waikiki's climate delivering an average of 5.3 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 6169
12th
State Wide
51st
Australia Wide
Hot Water Installation Waikiki
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 Waikiki
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterWaikiki
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 Waikiki
Compare heat pump hot water systems suitable for Waikiki'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 - Waikiki, 6169
Hot Water Demographics - Waikiki
Based on the Australian Bureau of Statistics 2021 Census (ABS), Waikiki has around 14,736 private dwellings, home to approximately 32,486 people. With an average household size of 2.5 people, and around 50 litres of hot water used per person each day in Australia, Waikiki households use approximately 125 litres of hot water daily, equating to a massive 1.8 million litres of hot water used across the suburb every single day.
Other census insights reinforce Waikiki's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Waikiki community is home to 2,605 couple families with children and 1,009 one-parent families, meaning a large proportion of households face substantial hot water demand. With 5,561 homes owned with a mortgage and 4,222 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.
Waikiki is converting hot water demand to efficient systems faster than many peers, with 20.9% of dwellings already upgraded.
Hot water systems in Waikiki
Across Waikiki 6169, more locals are moving away from old gas units and ageing electric storage tanks towards an energy efficient hot water system that keeps bills down and showers hot. With an average household size of around 2.5 people and more than 9,700 families in the 6169 area, reliable hot water is essential. At the same time, power prices and cost of living pressures mean many homeowners are rethinking how their hot water system works.
Waikiki’s sunny coastal climate is ideal for a solar hot water system or heat pump hot water system. The local Rockingham weather station records about 19.2 MJ of solar energy a day on average – roughly 5.3 kWh/m²/day – which is excellent for a solar hot water heating system and also boosts the performance of heat pump hot water using warm air. With over 13,000 occupied dwellings, a big share of which are separate houses, there is strong potential for efficient hot water installation on roofs and in side yards, especially for homes already running rooftop solar.
In 6169 there have already been 3,073 efficient hot water installations, combining heat pump and solar hot water installation jobs. From just 29 systems back in 2001, annual installs climbed to peaks around 2009–2011 and have stayed steady since, with more than 100 systems most years. That steady trend shows growing interest in electrification, lower running costs and choosing the most efficient hot water system instead of sticking with old gas. Brands like Rheem heat pump hot water, Rheem solar hot water, Rinnai solar hot water and Sanden heat pump units are all popular options for homeowners wanting the best heat pump hot water system or a robust solar hot water tank replacement.
For a typical Waikiki family, hot water can be one of the biggest energy users in the home. Swapping to an energy efficient hot water system can make a noticeable dent in bills. As a guide, annual savings might look like:
• Old electric to heat pump hot water installation: about $350–$700 per year • Gas to heat pump vs solar hot water: typically $250–$600 per year • Gas to solar hot water system: roughly $300–$650 per year • Old electric to modern electric hot water installation powered by rooftop solar: about $250–$500 per year
Actual hot water system price or cost will depend on brand, size and whether you need solar hot water repair or a full solar hot water tank replacement. Heat pump hot water price or cost can initially be higher than a basic electric hot water system, but the running costs are much lower, especially when paired with rooftop solar or off‑peak tariffs. Solar hot water price or cost also varies, but STCs and state incentives help bring it down.
For many Waikiki homes, the choice comes down to heat pump vs solar hot water, or solar hot water vs electric hot water. A well‑sized solar hot water system with a good north‑facing roof can deliver most of your hot water free from the sun. A quality heat pump hot water system works brilliantly on smaller roofs, shaded sites or townhouses, and can be timed to run during the middle of the day to soak up excess solar. Modern electric hot water system options are also far more efficient than older units, and when combined with solar PV they can be cleaner and cheaper than gas. That is why electric hot water vs gas hot water is increasingly tilting towards all‑electric homes in WA.
In WA, homeowners in Waikiki can usually access a mix of Australian Government incentives and state‑based support when upgrading to efficient hot water. Small‑scale Technology Certificates (STCs) act like an upfront discount on eligible heat pump and solar hot water systems, effectively reducing system cost by a substantial percentage. On top of that, there may be a heat pump hot water rebate, solar hot water rebate or electric hot water system rebate options available at state or program level from time to time. Together, these hot water rebate WA programs can cut the payback period significantly, especially if you also run the system on solar power or use a timer or solar‑diverter to maximise daytime heating.
If your current unit is rusty, running out of hot water or simply costing too much, it is a good time to look at the best hot water system Australia has to offer for your style of home in Waikiki. Whether you need fast hot water repair, ongoing solar hot water repair, or a full upgrade to a heat pump hot water system, solar hot water system or efficient electric hot water system, working with experienced local installers matters. Waikiki’s strong solar exposure and growing interest in sustainability mean there is real potential to reduce bills, cut emissions and future‑proof your home. If you are thinking about switching from gas or an old electric unit, connect with trusted local hot water WA specialists for personalised advice on the right system, hot water system price and rebate options for your property.