Energy Efficient Hot Water Systems

Water heating is a significant user of energy. Water heating is the second largest component of residential energy use - accounting for approximately 30% of household energy use in the average Australian home.

This equates to a significant impact on our environment, and your energy bill!

So, selecting the right system will bring big benefits in reducing household energy costs and meeting household hot water needs – one of life’s essentials.

SA Hot Water™ energy efficient specialists are here to talk you through the costs associated with each hot water system type and how they fit with your hot water needs.

Let us guide you through the upfront costs, maintenance, durability, reliability, performance, Government rebates, system capacity and climate factors to consider with each hot water system.

For an average family the reduction can be as much as four tonnes of CO2 per year—the equivalent of taking a car off the road.

Start saving today and enquire about converting or replacing your current system.


Save 80% on your hot water heating bills and up to $2000 off your new heat pump system.

Our limited time SA Hotwater discount, together with the government rebate scheme (Small-scale Technology Certificate) can save you up to $2000.

Adelaide’s leader in energy efficient hot water systems has partnered with the most energy efficient hot water pump in the market – Sanden heat pump. Investing in this leading system means you receive the highest amount of Small-scale Technology Certificates (STCs) of any currently available hot water heat pump system.

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Solar Hot Water

Reduce your energy bill and carbon footprint.

Save money while investing in the Australia of tomorrow. Solar Hot Water Systems make efficient, ethical and smart use of Australia’s plentiful sunshine.

Heat Pump Hot Water

Heat pump water heaters are highly efficient and use 80% less energy than conventional electric hot water systems.

Slash your energy bills, plus take advantage of current Government rebates to reduce upfront costs today.

Gas Hot Water

The cheapest way to heat water is with natural gas.

Let the SA Hot Water™ team walk you through why a natural gas 5 star continuous flow hot water system may be right for you.

Electric Hot Water

Lower upfront costs to purchase a new system can make electric hot water an attractive option.

Check with our team to see if you’re eligible to install a new electric hot water system today.

SA Hot Water is your local Adelaide energy efficient hot water specialist

SA Hot Water stock a complete range of gas hot water systems, heat pump hot water systems, electric hot water systems and solar hot water systems. Offering our customers great choice and value. SA Hot Water™ is your one stop shop for the best hot water systems and trustworthy hot water advice.



Address: 941 Port Road, Cheltenham


Phone: 8444 7320

Or leave your details and one of our hot water specialists will be in touch to help you with your hot water needs.

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How Each System Works

Heat Pump Hot Water

Heat Pump Hot Water

While heat pumps may be relatively new in the world of hot water heating, heat pumps have been around for a long time in the form of fridges and freezers.

They work by ‘pumping’ heat from one place to another, using a compressor and a refrigerant. In the case of your fridge it is pumping the heat from inside the cabinet to the room outside. In the case of a heat pump hot water system they are pumping the heat from the outside air, which has been heated by the sun, into the water storage tank.

They are very efficient at heating because instead of converting electricity (or gas) directly into heat it uses a much smaller amount of energy to move heat from elsewhere. In South Australia we mostly use air-sourced heat pumps which suits our temperate climate.

System efficiency is measured as COP, or coefficient of performance, a ratio of energy consumed to energy provided. Higher is better. A good heat pump unit will achieve a COP of 4+, which means they use around 75% less energy than an electric hot water system. When they are paired with a solar PV system to provide the electricity they can be 100% solar powered, compared to a solar hot water system that requires significant boosting in the Winter.

…click through to find out more about Heat Pump Hot Water Systems

Solar Hot Water

Solar Hot Water Systems

Solar hot water works by absorbing sunlight and using it to heat water. The sun is free and renewable energy with typical Adelaide climates achieving around 80% of the households hot water needs from the suns rays. Shortfalls are covered automatically with gas or electricity to boost the water on overcast days when no solar gain is available.

The two main types of solar collectors are flat plate or evacuated tube.

Flat plate systems are pipes in an insulated box with glass at the front. While simple and cheap, it is difficult to insulate the pipes against heat loss while still exposing them to the sun. this reduces the efficiency in colder weather.

Evacuated tubes work like a thermos, with two layers of glass with the air evacuated from between them. The inside is coated to very efficiently absorb sunlight, but the heat can’t easily escape back through the vacuum. This makes them more efficient than flat panels when the air is cold.

As the sun shines on a collector panel, the water in the pipes inside the collector becomes hot. This heated water is circulated up the collector and out through a pipe to the storage tank. Cooler water from the bottom of the tank is then returned to the bottom of the collector, replacing the warmer water.

Some systems don’t heat the water directly but instead heat a fluid similar to antifreeze used in vehicle cooling systems. This fluid flows in a closed loop and transfers the collected heat to the water in the tank via a heat exchanger.

…click through to find out more about Solar Panel Hot Water Systems

Gas Hot Water

Gas Hot Water Systems

Gas water heater covers three main product types, gas storage water heaters (GSWH), instantaneous or continuous flow gas water heaters (IGWH) and solar water heaters with instantaneous gas boosting (SWHs). Gas water heaters make up approximately 48 per cent of water heaters in Australia

The most efficient Gas hot water system is a natural gas 5 star continuous flow hot water system. These instantaneous gas hot water systems, also known as continuous flow, don’t have storage tanks and heat water only when required. In comparison to a 3 star storage hot water system, energy savings for these systems will on average exceed $400 per year. With rising gas prices this difference is set to grow further.
All gas water heaters are regulated to meet minimum energy performance standards (MEPS).

Instantaneous Gas water systems heat water by a gas burner as it flows through a coiled pipe called a heat exchanger. The gas burner starts when a hot water tap is turned on. It only heats the amount of water that is required instead of continuously heating a full tank. As they don’t store any hot water, there is no heat loss from a tank and so can have energy and cost savings.

To allow enough time for heating, the water is slowed down as it flows through the heat exchanger. This means that instantaneous units supply hot water at a lower pressure than storage systems. They can typically deliver hot water at flow rates per minute of between 10 litres and 30 litres, depending on the model.

…click through to find out more about gas hot water systems