Hot Water Systems in St Marys
The 7215 postcode, covering St Marys, Beaumaris, Bicheno, Chain Of Lagoons, Coles Bay, Cornwall, Douglas River, Douglas-apsley, Falmouth, Four Mile Creek, Freycinet, Friendly Beaches, Gray, Scamander, Seymour and Upper Scamander and surrounding areas, is home to around 2,964 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 St Marys and the 7215 area, 99 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 St Marys's climate delivering an average of 3.9 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 7215
30th
State Wide
1429th
Australia Wide
Hot Water Installation St Marys
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 St Marys
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterSt Marys
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 St Marys
Compare heat pump hot water systems suitable for St Marys'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 - St Marys, 7215
Hot Water Demographics - St Marys
Based on the Australian Bureau of Statistics 2021 Census (ABS), St Marys has around 2,964 private dwellings, home to approximately 3,477 people. With an average household size of 2.1 people, and around 50 litres of hot water used per person each day in Australia, St Marys households use approximately 105 litres of hot water daily, equating to a massive 0.3 million litres of hot water used across the suburb every single day.
Other census insights reinforce St Marys's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The St Marys community is home to 208 couple families with children and 72 one-parent families, meaning a large proportion of households face substantial hot water demand. With 384 homes owned with a mortgage and 898 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.
St Marys is converting hot water demand to efficient systems faster than many peers, with 3.3% of dwellings already upgraded.
Hot water systems in St Marys
Across St Marys and the wider 7215 area, more households are quietly upgrading to energy efficient hot water systems. With an average household size of around 2.1 people and a big share of homes owned outright or with a mortgage, many locals are looking to cut running costs without sacrificing comfort. Power prices keep climbing, and older gas or electric storage units can chew through a big chunk of the quarterly bill, so swapping to a modern hot water system is a logical next step. St Marys enjoys solid solar exposure, with mean daily sunshine of about 14.2 MJ/m² – roughly 4 kWh/m² per day – which is ideal for getting good performance from a solar hot water system or a high quality heat pump hot water system.
With 1,695 occupied private dwellings and a slightly older population (median age around 52), reliability matters. Many homes are still on gas or older electric hot water, but newer options like a heat pump hot water system, solar hot water heating system or efficient electric hot water system can dramatically reduce energy use. When you look at the annual hot water energy savings possible in St Marys, it is easy to see why more owners are considering a hot water upgrade as they modernise their homes and move towards all‑electric living.
For a typical St Marys household, hot water can be one of the largest single energy loads. A well‑sized heat pump hot water installation or solar hot water installation can cut that demand by more than half. Locally, brands such as Rheem, Rinnai, Sanden and Thermann are popular, with options ranging from rheem solar hot water and rinnai solar hot water through to premium sanden heat pump systems and rheem heat pump hot water units. These are among the best hot water system Australia has to offer, and many are rated as the best heat pump hot water system choices for cooler climates like Tasmania.
Average annual bill savings for St Marys homes can look like this:
• Old electric to heat pump: $450–$900 per year • Gas to heat pump: $350–$750 per year • Gas to solar hot water: $300–$700 per year • Old electric to modern electric with rooftop solar: $250–$600 per year
In total, around 99 efficient hot water systems (heat pumps and solar hot water) have already been installed across the 7215 postcode. Installations grew steadily from the early 2000s, with noticeable activity between 2008 and 2015 when several years recorded 7–9 systems each. While numbers have been smaller in recent years, these heat pump and solar hot water repair and replacement jobs show a clear local interest in electrification, better efficiency and lower running costs. As more households add solar, questions like heat pump vs solar hot water and solar hot water vs electric hot water are becoming common.
Hot Water Rebates, Tariffs & Savings
In St Marys TAS, more people are now replacing old gas or electric units with efficient options like heat pumps, modern electric hot water or a solar hot water system. Federal incentives such as Small‑scale Technology Certificates (STCs) help bring down the solar hot water price / cost and heat pump hot water price / cost, while state‑based programs can add a heat pump hot water rebate, solar hot water rebate or even an electric hot water system rebate for eligible homes. These hot water rebate TAS schemes can effectively cut the upfront hot water system price / cost by a substantial margin, often trimming payback periods to just a few years, especially if you already have rooftop solar. With smart controls, timers or solar diversion, a solar hot water system or energy efficient hot water system can use more of your own solar and less grid power, making it the most efficient hot water system for many St Marys households.
If your current unit is older, noisy or struggling to keep up, it could be the perfect time to look at hot water TAS options and compare electric hot water vs gas hot water, heat pump vs solar hot water and solar hot water vs electric hot water. Whether you need hot water installation for a new build, hot water repair on a tired storage tank, or a full solar hot water tank replacement, working with experienced local heat pump and solar hot water specialists makes all the difference. St Marys has strong potential for energy efficient hot water systems, and upgrading can reduce bills, cut emissions and future‑proof your home. To find the right solution and tap into any available hot water rebate TAS offers, connect with trusted local experts for personalised advice with us.