FEATURES 17
Everything you wanted to know about solar-thermal( but were too afraid to ask)
Compiled by
Tanya Olckers
Gone are the days when South Africans could say they fully rely on electric geysers for hot water.
Electricity prices have skyrocketed and the threat of loadshedding means that people are prioritising energy efficiency over upfront costs. People want uninterrupted hot water while cutting their long-term electricity bills.
With this comes a shift in perspective as more South Africans move towards smarter, more efficient water heating systems. As plumbers, you are uniquely placed to guide your clients when it comes to sustainable and cost-effective hot water solutions.
More plumbers are taking a closer look at expanding their expertise in solar-thermal water heating. Not only is this in response to client demand, but plumbers can future proof their businesses while helping clients make informed, long-term investments.
“ Investing in an energy-efficient water heating system is no longer just about sustainability— it’ s about economic survival,” says Sean Moolman from PowerOptimal, a Kwikot partner.“ Loadshedding and rising electricity costs are forcing South Africans to rethink how they heat water, and solar PV water heating is quickly becoming the preferred solution.”
Plumbers who position themselves as experts in solar geysers, heat pumps and high-efficiency electric geysers will not only remain relevant in a changing industry but will also build trust with their clients. By proactively educating homeowners about the financial and practical benefits of alternative energy solutions, plumbers can help them make smarter choices that ensure long-term savings and uninterrupted hot water supply.
With loadshedding expected to continue, experts predict that solar PV water heating will see the highest adoption rates over the next 5 – 10 years. The availability of financing options, such as solar loans, is also making it easier for homeowners to transition to energy-efficient solutions without the burden of high upfront costs.
“ Hot water is often taken for granted until it’ s suddenly unavailable,” says Murray Crow, managing director of Kwikot.“ Households can make smarter choices by adopting technologies that balance affordability with efficiency.” The plumbing industry is evolving, and those who adapt will lead the way. With South Africa facing ongoing energy challenges, solarthermal solutions— solar geysers, heat pumps and solar pumps— are no longer just a niche market but an essential part of the plumbing profession. Plumbers across the country are shifting toward sustainable installations.“ At UPP GRP, we’ re working alongside industry leaders to ensure a seamless transition into this booming sector,” says Duncan Keil, UPP’ s founder.“ Solar-thermal is the future of plumbing and plumbers must upskill now to remain competitive.”
Why should plumbers care about solar-thermal? Load-shedding, skyrocketing electricity costs, and the push for eco-friendly buildings mean traditional electrical water heating is becoming obsolete. South Africa’ s National Building Regulations( SANS 10400-XA) now mandate energy-efficient water heating solutions in new buildings, making solar and heat pumps nonnegotiable for future-ready plumbers.
Image by Kwikot
“ What people must understand is that solar or heat pumps need to be retrofitted onto your current geyser,” says Patrick Gordon, technical manager of Splashworks.“ Also, solar relies on the sun for heat, and on overcast days you’ re not going to have water that is as warm as it could be.”
Going for a solar-thermal option may entail changing everything. The tank’ s size needs to change, as more water will need to be stored.
Solar installation must be carried out by qualified professionals.
May 2025 Volume 31 I Number 03 www. plumbingafrica. co. za