Powerless Rainwater Purification System 'ecowin Water' Wins Excellence Award at the 24th Environmental & Facility Design Awards

Eco Factory Co., Ltd. (Headquarters: Kumamoto City, Kumamoto Prefecture; President: Takayoshi Murakami) is pleased to announce that its power-free rainwater purification system, 'ecowin Water,' has received the 'Excellence Award' at the 24th Environmental & Facility Design Awards, hosted by the Association of Building Engineering and Equipment.

The Environmental & Facility Design Awards program comprehensively evaluates outstanding environmental and facility designs in the building sector based on four perspectives: 'Sensitivity,' 'Functionality,' 'Society,' and 'Economy.'

'ecowin Water' was awarded for its unique 'no-electricity' concept, its contribution to social infrastructure as a disaster-resilient and energy-saving solution, and its future potential as a self-sustaining system for disaster scenarios.

Award Details - Award: Excellence Award - Recipient: Eco Factory Co., Ltd. - Project: ecowin Water, a power-free rainwater purification system. - Concept: A green infrastructure for disaster prevention, energy saving, and circular society achieved with zero CO2 and zero electricity. - Organizer: Association of Building Engineering and Equipment - Ceremony Date: Friday, May 22, 2026 - Ceremony Venue: Kenchiku Kaikan Hall

About 'ecowin Water' 'ecowin Water' is a rainwater treatment system that purifies rainwater without power, enabling energy conservation, disaster prevention, and reduced environmental impact. It can be retrofitted to existing building drainage pipes and utilizes a unique structure combining centrifugal, gravity, and coagulation separation for high efficiency. Incorporating 0.5μm precision filtration, water quality tests have confirmed silica levels of less than 0.3mg/L, preventing scale buildup and allowing for diverse uses such as equipment operation and cleaning.

Used for mist cooling of air conditioning outdoor units, the system has demonstrated approximately 15% energy savings, helping to reduce summer cooling loads and peak demand.

Key Advantages - Easy retrofitting to existing facilities, meeting high demand for energy conservation amid rising electricity costs and extreme heat. - Contributes to environmental and sustainability goals for major corporations, supporting both carbon footprint reduction and business continuity planning (BCP). - Operates during power outages or water supply disruptions, making it a valuable asset for disaster bases and BCP measures.

Anticipated Use Cases - Evacuation shelters/gyms: HVAC energy efficiency, emergency water supply. - Factories: Mist cooling, process cleaning water, BCP measures. - Gas stations: Pure water for car washing, local disaster prevention. - Commercial facilities: HVAC energy efficiency, BCP measures. - Remote islands/mountainous areas: Securing water for daily life. - Medical/welfare facilities and offices.