Our history From 1930 to today

Over 90 years of growth
driven by passion and competence.


Aristide Merloni founds the Industrie Merloni in the Marche Region of Italy, starting the production of weighing scales.


With nearly 600 employees and 5 plants, the Company starts the production of gas cylinders and electric water heaters.
It is during this period of intense growth that the Ariston brand is created.


The Company becomes a leader in the Italian water heater segment and expands into Western Europe’s main markets.


Already a market leader in water heating, the Company enters the heating sector and starts producing boilers.


By setting up subsidiaries in Eastern Europe and Asia, the Company consolidates its global leadership in heating and water heating: in these years, it acquires Racold, the largest water heating company in India, and opens its first wholly owned factory in China.


The Group acquires a number of historical companies and brands in the heating and burners industry: Chaffoteaux, Elco, Cuenod and Rendamax.


The Company opens a new factory in Saint Petersburg, Russia, and acquires Ecoflam, an Italian leader in heating systems.


After acquiring the Swiss company Termogamma SA, specializing in heat pumps, the Group opens the European centre of competence for solar thermal energy in Italy.


The Group changes its name to Ariston Thermo and is a global leader in the heating and water heating industry, offering an already full range of products, systems and services.



Ariston Thermo finalises the acquisition of DhE, an Italian leader in the sector of heating elements for commercial and industrial applications, and enters into a joint venture for manufacturing and selling high-efficiency home heating systems in Uzbekistan.


By acquiring Cipag SA and Domotec AG, Ariston Thermo confirms its leadership in Switzerland in the production, distribution and maintenance of water heating systems.


Ariston Thermo acquires ATAG Heating, a Dutch highend brand in the heating industry. In the same year, two important transactions are conducted to expand production in the markets enjoying greatest growth: the acquisition of Heat Tech Geysers, the second player in the South African market for water heaters, and the inauguration of a new factory in Vietnam, at the forefront in the production of electric water heaters.


The Group opens a new branch, Ariston Thermo Indonesia, and debuts on the Danish market with the acquisition of Gastech-Energi A/S. The Group also acquires SPM, French manufacturer of burners and components. On Ariston Thermo’s 20th anniversary in Russia, a new logistics hub is opened in Saint Petersburg.



Ariston Thermo continues growing, through both acquisitions and the achievement of important goals in historical sites: NTI – the brand leader in Canada and one of the leaders in the USA in the condensing boiler segment – joins the Group with products and services famous for their quality and reliability, while in Italy the Arcevia and Osimo plants win the coveted World Class Manufacturing bronze medal.


Laurent Jacquemin takes on the position of the Group’s Chief Executive Officer.
The Ariston Thermo Innovative Technologies, a research centre for cutting-edge solutions on the global thermal comfort market, is established in Agrate, Italy.
The investments of Ariston Thermo continue with the acquisition of HTP, a steady brand on the American highefficiency thermal comfort market, and of Atmor, an Israeli company which distributes its instantaneous electric water heaters in 40 countries worldwide. Ariston Thermo also opens a new manufacturing facility in Tunisia.



Ariston Thermo reaches an agreement with Whirlpool for the reindustrialisation of the site in Albacina to establish a competence centre for the design and production of advanced thermal comfort technology powered by renewable energy. The Group launches “The Ariston Comfort Challenge”, the first global campaign for the Ariston brand that best expresses the Group’s core values: innovation, comfort, energy sustainability and efficiency.


Ariston Thermo signs an agreement with Mexican conglomerate Grupo Industrial Saltillo for the acquisition of 100% of Calorex, a leading company in Mexico that offers water-heating solutions for residential and commercial sectors. With this operation, the Group consolidates its presence in the American continent. The Ariston Thermo plant in Cerreto D’Esi, specialised in the production of electric water heaters, receives the World Class Manufacturing (WCM) bronze medal.



Ariston Thermo celebrates its 90th anniversary since its foundation, an occasion to underline the Company’s values. In such a significant and difficult year due to the pandemic, the Company is launching a series of CSR activities at a global level to support different stakeholders in the fight against Covid-19.

Ariston Thermo also signes a framework agreement with Politecnico di Milano and Fondazione Politecnico di Milano to broaden and make more strategic the areas of collaboration already underway in research and technological innovation for the development of sustainable solutions in the thermal comfort sector


Ariston Group signs an agreement for the​ acquisition of Chromagen, an Israeli company​ leading in the provision of renewable hot water​ solutions. Chromagen is headquartered in​ Israel and has two subsidiaries in Australia and​ Spain, as well as a solid network of distributors that help serving customers in about 35​ countries worldwide. With this transaction,​ the Group further strengthens its competitive​ position in the renewable energy segment,​ acquiring a player with a leading position in​ Israel and a solid footprint in Australia.​

Ariston Group also lists on Euronext Milan, the regulated market managed by Borsa Italiana, part of the Euronext Group. The listing allows the Group to capitalise on growth opportunities, supporting and developing its solid organic growth while complementing it with M&A prospects. It also enhances the Company’s profile and brand recognition.