German manufacturer Viessmann says its new heat pumps have a coefficient of performance (COP) of up to 4.57 and a seasonal coefficient of performance (SCOP) of up to 4.4. The pumps have a heating ...

Manufacturer Viessmann is most well known for its Vitodens range of residential gas boilers. On this page, we reveal how the brand is rated by its customers. Our latest boiler survey polled more than ...

Carrier Global Corp., plans to acquire a unit of Viessmann Group that produces heat pumps, seen in Berlin as the heating solution for Germany’s green future. By Melissa Eddy Reporting from Berlin The ...

Testing found that some 2021-2023 boilers may ignite late, causing pressure damage and possible carbon monoxide leaks ...

An urgent recall has been made for a boiler following concerns it could leak carbon monoxide. The Viessmann Vitorondens 200-T / 222-F Oil Condensing Boiler with Vitoflame 300 Oil Blue Flame Burner is ...