Hot Water Systems in Exeter
The 5019 postcode, covering Exeter, Semaphore, Semaphore Park and Semaphore South and surrounding areas, is home to around 4,378 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 Exeter and the 5019 area, 164 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 Exeter's climate delivering an average of 4.9 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 5019
100th
State Wide
1134th
Australia Wide
Hot Water Installation Exeter
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 Exeter
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterExeter
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 Exeter
Compare heat pump hot water systems suitable for Exeter'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 - Exeter, 5019
Hot Water Demographics - Exeter
Based on the Australian Bureau of Statistics 2021 Census (ABS), Exeter has around 4,378 private dwellings, home to approximately 8,515 people. With an average household size of 2.1 people, and around 50 litres of hot water used per person each day in Australia, Exeter households use approximately 105 litres of hot water daily, equating to a massive 0.5 million litres of hot water used across the suburb every single day.
Other census insights reinforce Exeter's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Exeter community is home to 564 couple families with children and 201 one-parent families, meaning a large proportion of households face substantial hot water demand. With 1,254 homes owned with a mortgage and 1,255 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.
Exeter is converting hot water demand to efficient systems faster than many peers, with 3.7% of dwellings already upgraded.
Hot water systems in Exeter
Across Exeter and the 5019 postcode, more homeowners are swapping old gas and tired electric units for a modern hot water system that is cheaper to run and kinder to the planet. With an average household size of 2.1 people and a big share of homes either owned outright or with a mortgage, many locals are looking for smart upgrades that cut bills without sacrificing comfort. Median household income sits around $1,437 a week, so energy costs really matter, especially for families and the large over‑50 population in the area.
Exeter is well placed for efficient hot water. The nearby Largs Bay weather station records an impressive 17.8 MJ/m² of average daily solar exposure over the year, which works out to roughly 5 kWh per square metre per day. That strong sunlight helps a solar hot water system or heat pump hot water system perform at its best, slashing the electricity needed to keep showers hot. Upgrading from older gas or electric hot water to an energy efficient hot water system can deliver substantial annual hot water energy savings, particularly in a suburb where many of the 3‑bedroom homes house small families or downsizers who still value long, reliable showers.
In Exeter, a typical hot water installation is sized around how many people live in the home and when they use hot water. With 3‑bedroom dwellings the most common, a 250–315L heat pump hot water system or solar hot water heating system usually suits, while smaller units fit the many 1–2 bedroom homes and flats. Locally, efficient hot water systems are steadily replacing older gas units as people chase lower running costs and move towards all‑electric homes powered by rooftop solar.
Average annual bill savings for common upgrade paths in Exeter can look like:
• Old electric to heat pump hot water installation: about $350–$700 per year • Gas to heat pump hot water: about $250–$600 per year • Gas to solar hot water installation: about $200–$550 per year • Old electric to modern electric hot water installation run on solar: about $200–$500 per year
Brands such as Rheem and Rinnai are popular for both solar hot water system and efficient electric hot water options, including rheem solar hot water, rheem heat pump hot water and rinnai solar hot water. Premium heat pump models like the Sanden heat pump are also appearing on local roofs and driveways, as households look for the best heat pump hot water system and the most efficient hot water system for long‑term savings. You will also see chromagen solar hot water and other reputable brands in the mix, giving Exeter homeowners a wide choice when comparing heat pump vs solar hot water or solar hot water vs electric hot water.
Recent installs in Exeter show this shift clearly. There have been 164 efficient hot water systems installed in the 5019 postcode, combining both heat pump and solar hot water installations. Installations peaked in the late 2000s, with strong years in 2007 to 2009, and there has been a steady trickle of new systems every year right through to 2025. That pattern reflects growing interest in electrification, lower running costs and replacing ageing gas units with a more energy efficient hot water system that pairs well with rooftop solar.
Hot Water Rebates, Tariffs & Savings
Across SA, including Exeter, more people are asking whether to choose a heat pump hot water system, solar hot water system or a modern electric hot water system with smart controls. Rising gas prices and interest in electric hot water vs gas hot water are driving many to consider a hot water upgrade when their old tank fails or needs hot water repair. For some, that also means planning ahead for solar hot water tank replacement rather than waiting for a leak.
Exeter homeowners can typically tap into Australian Government incentives such as Small‑scale Technology Certificates (STCs) for eligible solar hot water heating systems and heat pump hot water installation. On top of that, state‑based schemes can provide a solar hot water rebate, heat pump hot water rebate or even an electric hot water system rebate in some programs. These incentives can effectively cut the upfront hot water system price or heat pump hot water price by a substantial percentage, bringing the solar hot water price or efficient electric hot water system cost within reach for more households.
When you combine rebates with off‑peak tariffs, timers or solar diversion controls, many Exeter homes can shave hundreds of dollars a year off their hot water bills. Payback periods for an efficient hot water upgrade can drop to just a few years, especially for homes already running rooftop solar SA‑wide. Careful system design helps you get the best hot water system Australia can offer for your needs, while keeping the hot water system cost sensible.
If you are in Exeter and wondering whether to stick with an electric hot water system, switch to a heat pump or go for a solar hot water installation, now is a good time to take stock. Talk to experienced local hot water installers who specialise in heat pump hot water, solar hot water repair, hot water installation and hot water repair SA‑wide. With strong sun, a community that values comfort and growing interest in sustainability, efficient hot water systems can help you cut emissions, reduce bills and future‑proof your home. Reach out to trusted local experts for personalised advice and see which hot water rebate SA options you can claim, and which system will work best for your place in Exeter.