Exclusively for this interview, we spoke with Bert Granderath, 68, Managing Partner of grando GmbH and a true pioneer in the pool industry since 1986. Known for his visionary approach, Bert shares his insights on sustainability, innovation and the future of swimming pools, offering a unique perspective on energy efficiency, resource conservation and the evolving demands of the industry.
1. Which current trend do you think is underestimated?
I believe that the trend toward passive energy generation and resource conservation in the pool sector is greatly underestimated, as the greatest savings potential lies directly at the water’s surface.
It is a well-known fact that a swimming pool cover can reduce energy consumption for heating by up to 80%. What is often overlooked, however, is the additional benefit of a solar cover. It is designed not only to prevent heat loss, but also to passively heat the pool. At the same time, the protection it provides against evaporation and chemical loss is also underestimated. A cover can reduce water loss by up to 80%, which is a major relief: less refilling is required, significantly fewer water care products are needed, and operating costs are reduced while protecting the environment. Our customers often only realize and truly appreciate these benefits after they have made their purchase.
2. Which development in the pool or sauna industry gives you the most hope – and which causes you the most concern?
What gives me the most hope is the shift toward sustainable innovation. It is encouraging to see how much attention is now being paid to energy efficiency, resource conservation, and environmentally friendly technologies. The entire industry is evolving by finding new ways to increase the comfort and functionality of pools while reducing their environmental footprint. This progress proves that luxury and environmental awareness are not mutually exclusive.
What concerns me most is the lack of willingness in some cases to take long-term responsibility. As long as products are offered without regard for service life, sustainability, comfort, and operating costs, the trust of end consumers will continue to be tested. Such short-term thinking undermines the credibility of our industry and makes it harder for all of us to convince customers of the true value and longevity of our solutions.

3. What advice would you give to young people who want to enter the industry?
Be curious and remain open to new ideas. The swimming pool industry is developing rapidly, and we need creative minds who dare to break new ground – whether with environmentally friendly materials, smart systems, or holistic wellness concepts. Anyone who wants to shape the future of the industry while putting quality first will find excellent opportunities here.
4. What do you want to leave behind: What mark do you want to make on the industry?
My goal is to help make our industry a pioneer in energy and water efficiency. I want swimming pools to be seen not only as places of enjoyment, but also as prime examples of the responsible use of resources. If, in the future, it can be said that my work helped make the operation of swimming pools more sustainable and future-proof, that would be the perfect legacy.
5. What do you definitely not want to regret when you retire?
I don’t want to regret missed opportunities or having taken the easy way out too often. In the end, what really counts is whether you had the courage to implement new ideas and stand up for your beliefs.
