Do not get BG to do any work in your home unless you want a nightmare. After promising "the best possible heating solution for my home" it has been an absolute farse because they haven't. I could write a book but to come to the point, cold house through winter 2022 numerous complaints including torn 4k carpet unnecessary broken bathroom wall tiles, storage tanks left in loft, unused pipes left hanging, creaking floor boards and more. After almost a year they still haven't put things right. I'm 81yrs and I think that they are just hoping that I pop my clogs. They don't care about their customers and from all account not even their engineers. Roy O'Grady.