A client has a system Vokera boiler and an unvented cylinder. The house is a recent built property and there are a few issues.
1. reverse circulation upper landing radiator
2. UV cylinder bursting
He is thinking of getting a Vaillant 937 or a Viessman. What do the regulars recommend.
1. reverse circulation upper landing radiator
2. UV cylinder bursting
He is thinking of getting a Vaillant 937 or a Viessman. What do the regulars recommend.