Ariston is a company dedicated to elegant design, energy efficient performance and user-friendly simplicity. Ariston is one of the most widely available heating brands in the world. Ariston manufactures an impressive variety of domestic heating supplies including Band A Condensing Natural Gas Combi Boilers, Unvented Cylinders, Water Heaters and Solar Thermal Water Heating solutions. Ariston is the world’s leading Water Heater brand.