Our most-recommended boilers in Cardiff and South Wales
Viessmann Boilers are the professional's choice - Superior German build quality and exceptional performance, combined with Viessmann's reputation for reliability matched with the most comprehensive warranties make Viessmann our number one choice. Not just our first choice as Viessmann boilers achieved Which best buy status in 2017 and again in 2018. All Viessmann Boilers incorporate patented Innox stainless steel heat exchangers, outperforming any boiler in its class. All Viessmann Boilers come with 10 year warranty on heat exchangers.