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Desjoyaux pipeless filtration: 40 years of innovation (1983-2026)
Desjoyaux pipeless filtration: 40 years of innovation (1983-2026)
Posté leIn 1983, Piscines Desjoyaux revolutionized the swimming pool industry with pipeless filtration. This patented technology, inspired by outboard boat engines, radically transformed the design of swimming pool filtration systems.
Forty years later, this innovation remains at the heart of the success of the world leader in inground swimming pools.
The nautical inspiration behind an innovation
The story begins with a brilliant observation by Jean Desjoyaux. Outboard boat engines operate without complex piping, drawing seawater directly. This nautical approach inspired a revolutionary filtration system that eliminates traditional underground piping.
The Desjoyaux filtration system integrates all equipment into a compact monobloc unit. This design eliminates the risk of underground leaks and simplifies installation. The traditional technical room disappears thanks to this patented innovation which positions the filtration system on the pool structure.
How does the Desjoyaux ductless filtration system work?
The system is based on a simple but effective principle. The filtration unit is positioned astride the pool wall or integrated into the structure. This monobloc filtration unit consists of 2 compartments that include all the necessary filtration elements: The compartment/technical room includes the filtration pump, and the compartment/filter room includes the skimmer, the pre-filter basket, the filter medium, and the spotlights. Suction and discharge pipes connect the 2 compartments and ensure water circulation.
Water is drawn from the skimmer by the filter compartment, and once filtered, it returns to the pool through the discharge nozzle. The exclusive Desjoyaux filter medium, typically a filter bag available in 6, 15, and 30 microns, ensures optimal water filtration.
Cleaning the filter medium consumes only 36 liters of water per cleaning, compared to 750 liters for conventional sand filtration systems during backwash (sand filter cleaning).
As Johann V. from Saint-Folquin testifies: "Your filtration system is far superior to the sand I used for years." The filtration units adapt to all pools, private and public, offering remarkable installation flexibility.
40 years of technological evolution (1983-2026)
Since 1983, Desjoyaux has been constantly improving its pool filtration units. The company invests in research and development to maintain its technological lead in the face of market changes and environmental requirements.
Modern filtration units offer a sleeker design, are equipped with LED spotlights, and can receive options such as: salt chlorinator with automatic pH regulation, counter-current swimming, and heating systems. This evolution transforms the simple filtration unit into a true intelligent control center for pool filtration.
Innovation is accompanied by an ecological commitment. Ductless filtration consumes half as much energy as a traditional system due to the absence of pressure losses. This performance is part of the company's environmental approach, which will be able to recycle 5,000 to 6,000 tons of plastic annually at its Saint-Étienne factory by 2026.
The exclusive advantages of the Desjoyaux system
The ductless pool filtration system offers concrete practical advantages. The absence of buried pipes eliminates the risk of freezing and underground leaks. This technical safety reassures owners and simplifies maintenance.
Marie Hélène J. from Osny confirms this reliability: "We are very happy with the pool, the heating, and we have never had a breakdown" after 15 years of use. Installing a ductless pool is faster, reducing construction times so families can enjoy their pool sooner.
The pool filtration system adapts to space constraints. Without the need for a technical room, garden landscaping gains creative freedom. This architectural flexibility appeals to owners of small urban plots.
Impact on the global swimming pool industry
With 400 sales outlets in 80 countries and a turnover of 98 million euros in 2025, Desjoyaux has established itself as the world's leading network for inground pool construction. This international success is based on the company's investments to improve the quality of its production.
The company produces 8,000 pools per year in its French factory, or one pool every hour. This industrial capacity, combined with French expertise, has guaranteed consistent quality for four decades.
The efficiency of the system is confirmed in daily use.
As one owner explains: "Our pool is 7m x 3.5m and the filtration unit does its job very well in addition to being easy to use." Desjoyaux filtration influences the entire sector, remaining a unique patented technology after forty years of continuous improvement.
Do you want to benefit from this revolutionary innovation? Configure your Desjoyaux pool with ductless filtration and discover all the layout possibilities adapted to your terrain and desires. Desjoyaux filtration influences the entire sector, remaining a unique patented technology after forty years of continuous improvement.
