Industry Innovation & Customer Satisfaction For decades, customers have looked to Rittling for the industry's most advanced, reliable and efficient heating designs. Based in Western New York, Hydro-Air employs a highly skilled and diverse work force. Our extensive selection of hydronic heating and cooling equipment features models for all commercial, industrial and institutional applications. Rittling engineers can custom build components for virtually any plan or architectural drawing, making Rittling the perfect fit for all of your heating and cooling needs. The result of a half-century of forward thinking, smart management and cost-saving innovation, Rittling's products represent a triumph of modern engineering, and a perpetual desire to break new ground. Rittling products can be found in offices, schools, libraries, hospitals, museums, restaurants and countless other buildings in North America.