Hot Water Systems in Cogra Bay
The 2083 postcode, covering Cogra Bay, Bar Point, Brooklyn, Cheero Point, Dangar Island, Milsons Passage and Mooney Mooney and surrounding areas, is home to around 885 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 Cogra Bay and the 2083 area, 103 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 Cogra Bay'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 2083
360th
State Wide
1399th
Australia Wide
Hot Water Installation Cogra Bay
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 Cogra Bay
* Data from the Bureau of Meteorology. Closest station: N/A.
Solar Powered Hot WaterCogra Bay
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 Cogra Bay
Compare heat pump hot water systems suitable for Cogra Bay'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 - Cogra Bay, 2083
Hot Water Demographics - Cogra Bay
Based on the Australian Bureau of Statistics 2021 Census (ABS), Cogra Bay has around 885 private dwellings, home to approximately 1,533 people. With an average household size of 2.3 people, and around 50 litres of hot water used per person each day in Australia, Cogra Bay households use approximately 115 litres of hot water daily, equating to a massive 0.1 million litres of hot water used across the suburb every single day.
Other census insights reinforce Cogra Bay's suitability for energy-saving improvements like energy-efficient or solar-powered hot water. The Cogra Bay community is home to 116 couple families with children and 20 one-parent families, meaning a large proportion of households face substantial hot water demand. With 255 homes owned with a mortgage and 260 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.
Cogra Bay is converting hot water demand to efficient systems faster than many peers, with 11.6% of dwellings already upgraded.
Hot water systems in Cogra Bay
In Cogra Bay, more locals are looking at energy-efficient hot water systems to keep bills down and comfort up. With a mostly owner-occupied community, a median household income around $1,950 a week and an average household size of 2.3 people, families and downsizers alike are weighing up whether their old gas or electric hot water system is still pulling its weight. Many homes are shifting to an all-electric setup, and swapping an ageing unit for a modern heat pump hot water system, solar hot water system or efficient electric hot water system is often the easiest next step.
Cogra Bay enjoys strong sunshine, with average solar exposure of about 16.3 MJ/m² a day – roughly 4.5 kWh of solar energy per square metre. That is ideal for a solar hot water heating system or a high-performance heat pump, both of which thrive in our coastal NSW climate. For homeowners juggling mortgages of around $2,290 a month and higher energy prices, the annual hot water energy savings from an upgrade can make a noticeable dent in running costs, especially in separate houses where hot water demand is higher.
Across the 2083 postcode, most dwellings are separate houses with plenty of roof space, so there is good potential for pairing rooftop solar with an efficient hot water installation. Hot water typically accounts for a big slice of home energy use, so choosing the most efficient hot water system you can afford – whether that is a Sanden heat pump, Rheem heat pump hot water, Rheem solar hot water or Rinnai solar hot water – can be one of the best value upgrades you make. Brands like Solahart and Chromagen solar hot water also appear in the area, especially where homeowners want to maximise self-consumption of their solar.
To give you a feel for savings, here are typical average annual bill reductions many Cogra Bay households see when they upgrade from older systems:
• Old electric to heat pump hot water system: $400–$800 per year • Gas to heat pump hot water system: $300–$600 per year • Gas to solar hot water system: $250–$550 per year • Old electric to modern electric hot water installation with rooftop solar: $250–$500 per year
In Cogra Bay there have already been 103 efficient hot water systems installed, combining heat pump and solar hot water installation projects. Installations peaked around 2009 and 2011, with 15 systems each year, followed by steady numbers through the mid-2010s and fresh interest again in 2025. This pattern mirrors the broader push towards electrification, lower running costs and reduced emissions, as locals compare heat pump vs solar hot water and even solar hot water vs electric hot water to find the best fit.
When it comes to hot water repair and replacement, many households now look beyond a like-for-like swap. They factor in hot water system price and long-term running costs, comparing heat pump hot water price with solar hot water price and the cost of a quality electric hot water system. For some, the best hot water system Australia can offer is a premium, ultra-efficient model like a Sanden heat pump or other best heat pump hot water system options; for others, a robust Rheem or Rinnai unit offers the right balance of reliability and value. Whichever way you lean, it is worth weighing electric hot water vs gas hot water through the lens of future energy tariffs and your plans for rooftop solar.
Hot Water Rebates, Tariffs & Savings
Cogra Bay homeowners can also take advantage of a range of Australian Government and NSW hot water rebate programs. Small-scale Technology Certificates (STCs) apply to eligible heat pump hot water installation and solar hot water installation jobs, effectively reducing the upfront heat pump hot water cost or solar hot water price by a substantial margin. On top of that, state-based schemes can offer a heat pump hot water rebate or solar hot water rebate, and in some cases an electric hot water system rebate where you are replacing old, inefficient units. Together, these incentives can trim thousands off the installed hot water system cost and shorten payback periods to just a few years, particularly if you use timers or solar diversion to heat water when your solar is generating.
With more than 260 homes owned outright and another 255 with a mortgage, Cogra Bay is well placed to keep improving energy efficiency. If your current unit is older, noisy, running out of hot water or needing frequent hot water repair, it is a smart time to explore an energy efficient hot water system. Modern options are not only the most efficient hot water system choices we have seen yet, they also support a cleaner grid and quieter, more comfortable homes.
If you live in Cogra Bay and your hot water is due for an upgrade, now is a good time to check whether a heat pump hot water system, solar hot water system or modern electric hot water system suits your place. With strong solar exposure, growing interest in sustainability and solid hot water rebate NSW support, working with experienced local hot water installers like us can help you cut bills, reduce emissions and future-proof your home. For personalised advice on hot water NSW options and the best setup for your household, connect with our trusted local specialists today.