Survayer removed old boiler case to look at data plate and left top screws out potential co leak. Fitters have fitted boiler but fit the magna clean filter on the wrong side put it on the flow when a filter should be on the return to protect your boiler. Also they fit a condensate pump but didnt wire in the safety cut off. Good job im a heating service and repair engineer or there could have been a incident. Would not recomend at all. When i phoned up about it i was spoke to very abruptly. I rectified there faults myself. All the engineers wanted to do was get it done as quick as possible and go home.