Where should hot water systems be installed?
The location of your hot water system significantly impacts its efficiency and responsiveness. Installing the system close to high-demand taps, such as those in the kitchen, bathroom, or laundry, reduces heat loss and ensures a quicker supply of hot water. This proximity allows the system to operate more effectively, as the water doesn't have to travel long distances through pipes.
Bore water and hard water
Hard water contains high levels of dissolved minerals, primarily calcium and magnesium salts. These minerals are naturally present in soil and rock deposits that water traverses, and they cannot be removed by standard filtration methods. Over time, hard water can lead to limescale deposits in pipes and hot water systems, causing blockages and reducing efficiency.
Solar hot water: Do I have enough sunlight?
Australia's abundant sunlight makes solar energy a viable option across most regions. However, the effectiveness of solar systems varies based on geographic location, climate, and seasonal factors. Understanding these variables is crucial when considering solar installations.
Is gas available?
Gas remains a significant energy source in Australia, especially for heating and hot water systems. However, its availability varies by region. Urban areas typically have established gas networks, while rural and remote areas may lack infrastructure. It's essential to check with local utility providers to determine if gas is accessible in your area.
Hot water systems: What’s the right size?
When you're choosing a hot water system, it’s not just about picking a brand or deciding between gas and electric. One of the most important—and often overlooked—factors is making sure the system’s capacity matches your household’s demand.
Cold water diverters
A cold water diverter is a mechanical valve installed on a hot water line. It redirects the initial cold water, known as redwater, that sits in the pipe before hot water arrives. Instead of wasting this water down the drain, the diverter sends it to a greywater tank, a garden irrigation system, or back into the hot water storage system for reuse. These diverters work using water pressure and do not require electricity.
Hot water recirculation systems
If you're renovating your home—especially your bathroom, ensuite or kitchen—you're probably already thinking about energy efficiency and water conservation. One option gaining popularity in Australian homes is the hot water recirculation system. These systems are designed to deliver hot water instantly, without wasting litres of water while you wait for the tap to warm up.
Temperature controllers
Temperature controllers play a vital role in modern Australian homes, particularly in renovations and new builds that must meet today’s safety, energy and sustainability standards. These devices regulate water temperature at outlets, reducing the risk of scalding and helping households comply with current building codes.
Tank/tankless hybrid hot water systems
Hybrid hot water systems combine the benefits of traditional storage tanks and instantaneous (tankless) units. They typically store a small amount of pre‑heated water for immediate use while relying on an on‑demand heating element to supply additional hot water as needed. This design aims to provide continuous hot water without the long recovery times of full storage systems or the energy spikes of purely tankless models.
Storage tank hot water systems
A storage tank hot water system uses an insulated cylinder to heat and store water for household use. Electric models heat the water with internal elements, while gas units use a burner and flue. Solar systems may rely on solar energy alone or combine solar collectors with a gas or electric booster to ensure hot water is always available.













