ATAG combi boilers are built for performance, efficiency, and longevity. Designed and manufactured in the Netherlands, every ATAG boiler features a high-grade stainless-steel heat exchanger and delivers some of the highest efficiencies in Europe. Each model comes with a 12-year standard warranty and a lifetime warranty on the heat exchanger, with the option to upgrade to an 18-year warranty — still including lifetime cover on the heat exchanger. ATAG combis are the perfect choice for homeowners who want reliable heating, excellent build quality, and long-term peace of mind.