Japan Launches Next-Generation Water Heater with Built-in Ultra-Fine Bubble Technology

The new “BRIGHTS GRAND” series promises cleaner living spaces and reduced maintenance through certified nano-bubble innovation.

On September 10, 2025, a Japanese company will release a new water heater called the “BRIGHTS GRAND” series, equipped with a built-in Ultra-Fine Bubble (UFB) generator. Unlike conventional systems, this technology uses the natural energy of flowing water to create microscopic bubbles, each averaging just 0.131 micrometers in size, at a density of 22.86 million bubbles per milliliter.

These bubbles are not visible to the naked eye, yet they provide powerful cleaning effects. In laboratory testing, pipes treated with UFB water showed a 56.8% reduction in residue buildup, which could significantly lower the risk of odor and clogging. Similarly, UFB water reduced white limescale deposits by 34.9%, removed sticky dirt 20% more effectively, and improved oil stain removal by 10.5%. These results suggest that households may spend less time scrubbing sinks, pipes, and kitchen areas.

The product also received official certification from the Fine Bubble Industries Association (FBIA), marking the first time a gas water heater has achieved this recognition for cleaning performance. This milestone highlights Japan’s role in advancing everyday applications of nanotechnology.

Looking ahead, the BRIGHTS GRAND can also be paired with the company’s Hybrid Plus heat pump system, offering further energy savings and environmental benefits. If widely adopted, this technology could reduce both household maintenance burdens and the ecological footprint of domestic water heating worldwide.

In short, this launch from Japan demonstrates how invisible bubbles might quietly reshape the future of home cleanliness and sustainability.

Key Terms Explained

  • Ultra-Fine Bubble (UFB): Microscopic gas bubbles less than 200 nanometers in diameter, known for their ability to clean surfaces and reduce bacterial growth.
  • FBIA Certification: An official recognition from Japan’s Fine Bubble Industries Association, verifying that a product meets strict standards for cleaning effectiveness.
  • Hybrid Plus: A heat pump unit that can be combined with traditional gas heating, improving energy efficiency and lowering environmental impact.

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