I was appalled that the entire boiler had to be lifted up into place by the man working on his own. It was extremely heavy and there should have been two men for the job (or this part of it.) This is a Health and Safety matter, as an accident could occur, as well as the installer straining his back, especially over the years.. Similarly, the delivery of the boiler was made by an older man who, again, should not have been made to shift heavy loads. Workmen should be treated with respect and not exploited like this; I felt it was unfair and felt guilty for putting them at risk, although it was not my fault. IT IS A BAD MANAGEMENT DECISION. Neither of the men complained or made any remark about this - but it was what I witnessed, and I would not like a husband or son of mine have to put up with such conditions. The boiler, however, is perfect and is absolutely quiet in operation.