Headquartered in Oakland, California, Innos-Hydronic distributes Charcoal Ondol systems across the US as a US branch company of Sro Corporation in Korea that has been leading the innovative future oriented Ondol culture by applying the principle of human capillary vessels for the first time in Korea.

Through continuous research and development for better products, we are proud to introduce the Charcoal Ondol, a functional hybrid Ondol system made of eco-friendly carbon composite minerals.

Under the slogan ‘The Rebirth of Traditional Ondol,’ we have created an environmentally friendly product that overcomes the shortcomings of conventional dry heating, offering robustness, superior heat retention, and health benefits.

Charcoal Ondol, a product that is rightfully loved by the next generation, boasts easy installation and convenient post-installation tasks. It is not only making waves in the Korean community in Northern California but also spreading the joyous news to all communities striving for eco-friendly heating culture nationwide.