Thermax Limited India is a business group providing solutions in energy and environment engineering. It was established in 1966 through a technical collaboration with Wanson, a Belgium company.

Thermax Limited has five manufacturing locations in India and wide spread network of dealers and franchisees with 12 sales and service offices in the country. It has obtained technologies by forming joint ventures and alliances with firms such as Babcock & Wilcox, USA, the Kawasaki Thermal engineering company, Japan, and Bloom Engineering, Germany.