Hot Water Systems in Guildford
The 6055 postcode, covering Guildford, Brabham, Bushmead, Caversham, Dayton, Hazelmere, Henley Brook, South Guildford and West Swan and surrounding areas, is home to around 11,401 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 Guildford and the 6055 area, 1,689 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 Guildford'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 6055
30th
State Wide
145th
Australia Wide
Hot Water Installation Guildford
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 Guildford
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterGuildford
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 Guildford
Compare heat pump hot water systems suitable for Guildford'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 - Guildford, 6055
Hot Water Demographics - Guildford
Based on the Australian Bureau of Statistics 2021 Census (ABS), Guildford has around 11,401 private dwellings, home to approximately 30,301 people. With an average household size of 2.9 people, and around 50 litres of hot water used per person each day in Australia, Guildford households use approximately 145 litres of hot water daily, equating to a massive 1.7 million litres of hot water used across the suburb every single day.
Other census insights reinforce Guildford's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Guildford community is home to 3,849 couple families with children and 609 one-parent families, meaning a large proportion of households face substantial hot water demand. With 7,043 homes owned with a mortgage and 1,802 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.
Guildford is converting hot water demand to efficient systems faster than many peers, with 14.8% of dwellings already upgraded.
Hot water systems in Guildford
In Guildford, more homeowners are rethinking their old gas and electric hot water system and moving to 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 2.9 people and more than 10,700 dwellings across 6055, hot water is a big chunk of local energy use, so choosing the most efficient hot water system really matters for bills and comfort.
Guildford’s climate is ideal for efficient hot water. The nearby Perth Airport weather station records around 19 MJ/m² of solar exposure per day on average – roughly 5.3 kWh/m² of sunshine – which is excellent for a solar hot water heating system and also helps a heat pump hot water system run efficiently. With many homes owned with a mortgage and median household income over $2,100 a week, upgrading from older gas or resistive electric units to an energy efficient hot water system is a logical next step to keep running costs down and protect budgets for local families.
Around the 6055 area, efficient hot water systems are already taking off. Households are pairing rooftop solar with a solar hot water system or a quality heat pump hot water system, and using timers to run them when solar is producing. Popular brands in Guildford include Rheem and Rinnai for reliable solar hot water installation, plus Sanden and Stiebel-style premium heat pump units for those chasing the best heat pump hot water system. These sit alongside trusted options like Chromagen solar hot water and other electric hot water system upgrades, giving you plenty of choice when you compare heat pump vs solar hot water or solar hot water vs electric hot water.
For a typical Guildford home, the right system size depends on bedrooms and usage, but most families are well served by 250–315L tanks for heat pump hot water installation or electric hot water installation, and 300L+ tanks for a solar hot water tank replacement. To give you a feel for savings, here are realistic annual bill reductions many households see:
• Old electric to heat pump: $400–$800 per year • Gas to heat pump: $300–$600 per year • Gas to solar hot water: $250–$550 per year • Old electric to modern electric with solar: $250–$500 per year
Across Guildford and the broader 6055 postcode, there have already been 1,689 efficient hot water installations, combining heat pump and solar hot water systems. Installations grew steadily from just 12 systems in 2001 to peaks of over 140–160 systems per year around 2013–2014, before settling into a consistent flow of upgrades through to 2024 and 2025. That trend shows strong local interest in electrification, lower running costs and moving towards the most efficient hot water system options, especially as more homes add solar.
Hot Water Rebates, Tariffs & Savings
In WA, and particularly in Guildford, more households are now looking to replace old gas or electric hot water with efficient choices like a heat pump hot water system, a new solar hot water heating system or a better insulated electric hot water system. Federal incentives such as Small-scale Technology Certificates (STCs) can reduce the solar hot water price / cost or heat pump hot water price / cost at the point of sale, and state-based schemes and retailer offers can further cut the hot water system price / cost for eligible homes. For many Guildford households, combined discounts and a solar hot water rebate or heat pump hot water rebate can knock a substantial percentage off the upfront cost. When you add in ongoing bill savings of hundreds of dollars a year, the payback period on a rheem solar hot water, rinnai solar hot water, rheem heat pump hot water, Sanden heat pump or similar premium unit can shrink dramatically. Choosing smart tariffs, using timers and even solar-diversion controls can push those savings higher, especially if you are comparing solar hot water vs electric hot water or electric hot water vs gas hot water as part of a whole-of-home electrification plan.
If you live in Guildford and your existing unit is older, noisy or struggling to keep up, this is a good time to check whether your home is ready for a hot water upgrade. Local interest in sustainability and energy efficient hot water is growing, and efficient hot water systems can help cut emissions, lower bills and future-proof your property. For hot water WA homeowners, it pays to work with experienced hot water installation and hot water repair specialists who understand hot water rebate wa options, solar hot water repair, solar hot water price / cost and electric hot water system rebate rules. Connect with trusted local experts for personalised advice on the best hot water system Australia can offer for your home, and make your next hot water system in Guildford a smart, efficient upgrade.