The Ariston patented xtratech stainless steel heat exchanger is used in the Clas One 24 gas condensing boiler for improved heating and dependability. Because of its modulation ratio of 1:7, it can adapt to provide the desired heating and hot water while keeping fuel bills low. The Clas One is simple to use thanks to its backlit display and it is compatible with Ariston controls for use with the Ariston Net app, as well as an 8-year warranty as standard.

• New xtratech stainless steel heat exchanger
• High domestic hot water flow rates
• Auto function technology
• Comfort function
• High efficiency pump
• 1:7 modulation
• Large backlit display
• Includes liquefied petroleum gas conversion kit
• Ariston net compatible
• Lightweight unit starting at 29 kg