The Vaillant ecoTEC Plus System Boiler represents a high-spec condensing systems boiler within the Vaillant Range, featuring a stainless steel heat exchanger. Specifically designed for compatibility with unvented pressurized systems, the ecoTEC system boiler ensures optimal performance. Vaillant Boilers are distinguished by their high efficiency, achieving a top SEDBUK Band 'A' rating for fuel efficiency, coupled with powerful Domestic Hot Water (DHW) performance. Widely acknowledged as a leading heating technology company in Europe, Vaillant stands as one of the market and technology leaders, consistently developing best-in-class products to enhance domestic comforts.