As energy prices continue to rise and sustainability becomes a bigger priority for households, more people are making the switch to solar hot water systems. If you are looking to cut your energy bills and reduce your environmental impact, a solar hot water system is a smart move.
You might wonder how these systems work and whether they must be installed on your roof like traditional solar panels. Not necessarily. If roof space is limited, you have another option.
Enter the ground-mounted solar hot water system. A lesser known but highly effective setup that works just like traditional solar, only from the ground up.
Here’s an insight into how these systems work and how to decide whether they’re the right fit for you.
If you’re interested in solar hot water heating but want to reserve your roof space for solar panels only, a ground-mounted system could be the answer. Let’s break down the essential parts that make these systems work.
These solar thermal panels absorb sunlight and convert it into heat, which is then used to warm water. Unlike standard solar panels that generate electricity, thermal collectors are specifically designed for heating. With a ground-mounted setup, you can angle the collectors perfectly to capture the most sun throughout the day.
The storage tank holds the hot water until it’s needed. It’s typically located near the collectors to minimise heat loss and maintain efficiency.
In active systems, a small pump is used to circulate either water or a heat-transfer fluid between the collectors and the storage tank. Passive systems rely on natural circulation via convection.
These sturdy frames support the solar collectors on the ground. Accessibility means they can be adjusted for tilt and orientation, making it easier to optimise performance based on your property’s layout.
Most systems come with an electric or gas booster to ensure you still have hot water on cloudy days or during periods of high demand. Additionally, if your system is paired with solar PV and a battery, the booster can draw on stored solar energy or fall back on grid power when needed.
The main benefit of this split system design is that it reduces strain on the roof, since only the slim solar collectors are mounted up top while the heavier components stay safely on the ground. Here are some other benefits of a ground-mounted system:
Ground-mounted systems can be positioned at the perfect angle and direction for maximum sun exposure. This can help improve energy efficiency and hot water output.
With key components located at ground level, inspections and repairs are easier and safer than using ladders and climbing onto the roof.
If you’ve got the space, a ground-mounted system makes use of open areas without occupying roof space.
By relying on free solar energy and reducing reliance on the grid, these systems can significantly lower hot water bills over time. Additionally, easier access and maintenance may reduce servicing costs.
If you’re handy and considering a DIY approach, you might be tempted to install a ground-mounted solar hot water system yourself. However, installation is complex, and there are several reasons that professional installation is worth the investment.
To maximise efficiency, the solar collectors need to face true north and be positioned at the right tilt angle. A licensed solar installer will ensure the best location for a hot water system to make the most of your available sunlight. This ensures you get optimal performance year-round.
In Australia, local regulations must be followed, and installing a ground-mounted system likely requires council approval. A professional installer is familiar with these requirements and will ensure compliance, saving you time and hassle.
While professional installation has upfront costs, it’s worth considering that a job done right the first time can save you money in the long run by ensuring the system works efficiently and lasts longer. It’s worth noting that some installers offer warranties or rebates that make it more affordable.
Ground-mounted solar hot water systems are low-maintenance, and with proper care, systems can last 15–20 years or more. Keep the collectors clean and monitor the tank for wear. If water temperature drops or flow reduces, it may indicate a blockage or pump issue—then it’s time to contact a technician for servicing. Like all infrastructure, regular maintenance helps maximise efficiency and extend the system’s lifespan.
Consider your property: Do you have open land with consistent sun exposure? Are you looking to reduce long-term energy costs? Does your climate offer reliable sunlight all year-round?
If you answered yes, then a ground-mounted solar hot water system could be a smart solution. If you’re still weighing up the decision, consider that Government rebates and financing options can help make the switch more affordable.
Ready to explore your options? Contact Same Day Hot Water for expert advice and installation support.
In winter, ground-mounted solar systems may be less efficient, but most include boosters to ensure hot water availability.
Ideally, you need a few square metres of clear, sunny space for the collector and in-tank heating element.
Yes, rebates and incentives may be available depending on your state.
They require more space and can be more exposed to shading.
The main types of solar hot water systems are flat-plate collectors, evacuated tube systems and heat pump systems.
If you have available land and want easy access, optimal orientation, and roof relief, ground-mounted solar may be the solution for you.
Thermal collectors in ground-mounted solar hot water systems typically last 15–25 years with proper maintenance.