Sydney solar hot water system plumbing

05 Sep. 23

Myths and Facts about Solar Hot Water Systems: Demystifying Solar Energy

When it comes to Solar Hot Water Systems (SHWS), there’s a fair share of myths that might be confusing homeowners and potentially stopping them from making the switch. As a leading provider of Solar Energy Plumbing Services in Sydney, we’re here to debunk these myths and provide the facts about solar hot water systems.

Myth 1: Solar Hot Water Systems Don’t Work in Cold Weather

Fact: While it’s true that SHWS operate best in sunny weather, they’re also equipped to work efficiently in cold climates. Modern systems utilize highly efficient solar collectors (such as evacuated tubes) that can absorb solar energy even in cold and overcast conditions. Plus, most systems have a gas or electric booster to ensure hot water supply during periods of low sunshine.

Myth 2: Solar Hot Water Systems Are Too Expensive

Fact: The upfront cost of a SHWS can be higher than traditional water heaters. However, the long-term savings on energy bills make it a cost-effective choice. The Australian Energy Foundation estimates that a SHWS can save between 50% to 90% on water heating bills. Furthermore, government incentives like the Small-scale Renewable Energy Scheme (SRES) can help offset the initial installation costs.

Myth 3: Solar Hot Water Systems Require Constant Maintenance

Fact: Like any other appliance, SHWS requires some level of maintenance, but it’s not as intensive as some might believe. Basic maintenance tasks include periodic checks for leaks, keeping the solar collectors clean, and ensuring the system pressure is right. Most manufacturers recommend professional servicing every 3-5 years. With proper care, SHWS can have a lifespan of up to 20 years or more.

Myth 4: Solar Hot Water Systems Don’t Add Value to Your Home

Fact: This couldn’t be further from the truth. A SHWS can significantly increase the value of your home. Research by the Lawrence Berkeley National Laboratory found that homebuyers are willing to pay more for homes with solar installations.

Myth 5: Solar Hot Water Systems Can’t Supply Enough Hot Water for My Family

Fact: A well-sized SHWS can meet most, if not all, of your hot water needs. Systems come in various sizes, and a professional solar hot water plumber can advise on the best system size for your specific hot water usage. Most systems also have a booster for those times when additional hot water may be needed.

Myth 6: Solar Hot Water Systems Take Up Too Much Space

Fact: While a Solar Hot Water System does require some space for the solar collectors on the roof and the storage tank, the amount of space needed isn’t excessive. The design and configuration of these systems have improved over time, becoming more compact and efficient. With professional installation, a SHWS can be seamlessly integrated into your home’s layout.

Myth 7: Solar Hot Water Systems Are Not Reliable

Fact: This myth likely arises from the uncertainty of weather and sunlight. However, modern SHWS are extremely reliable and capable of providing a consistent supply of hot water. Advanced technology, coupled with auxiliary boosting options (gas or electric), ensures hot water even during periods of low sunshine or high demand.

Solar Hot Water Systems Myths and Facts

Myth 8: Installing Solar Hot Water Systems Is a Complex Process

Fact: While it’s true that installing a SHWS involves technical know-how, when you hire a qualified solar hot water plumber, the installation process is smooth and hassle-free. The professional will handle everything from site assessment, system selection, and installation, to explaining how to operate and maintain the system effectively.

Myth 9: Solar Hot Water Systems Only Save Energy in the Summer

Fact: Although SHWS perform exceptionally well in the summer, they also contribute to significant energy savings throughout the year. Even in the winter months or during overcast days, your system will still be capturing solar energy. According to the Australian Government’s Your Home Guide, a well-installed SHWS can provide 50 to 90% of your hot water for free, depending on your location and the type of system installed.

Myth 10: Solar Hot Water Systems Aren’t Suitable for Large Families

Fact: With the correct sizing and installation, a Solar Hot Water System can comfortably cater to the hot water needs of large families. Solar hot water systems come in a variety of sizes, and an expert can help determine the best system based on your household’s hot water demand.


Solar Hot Water Systems are an excellent investment in your home’s energy efficiency and environmental sustainability. However, making the switch is a big decision, and it’s important to understand the facts. With this myth-busting guide, we hope to have dispelled some misconceptions and given you a clearer picture of what SHWS can offer. Remember, each home and family is unique. Consulting with a solar hot water expert will help you find the best solution for your specific needs.

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