Around 6 months ago my shower unit broke and after much searching, I found somebody who could fit a new one. I had to supply the unit, which I bought from a supplier, and somebody else fitted it for me. There is now a problem with the shower so my conundrum is: Who is responsible, supplier or fitter? Even if it turns out to be the supplier, and they agree to replace it when I return the old one, it means I would have to call back the fitter twice to remove and then reinstall, which would no doubt cost more than buying another one. Is this a common problem, or is there a solution, i.e. in legal context rather than just an opinion?