Just done a favour for a friend and changed his loft tank, thanks for the advise on this in the past! Thought I would have to link two tanks together but managed to man handle a large coffin type up into the tiny loft space!!! My question is, how much would you expect the following to cost? No loft light and the portible lights I have heat the loft to an unbearable temperature so I fitted a loft light for him. Drain down original 25gal tank and remove. The platform this was on was in very poor condition so built a new one raising the tank slightly. Fit new tank 50gal and plumb up, mains fill, two outlet's one for DHW and other to feed the ensuite shower. replace overflow pipework which was shot. refill and check system. Took a full day to do and was pain due to the lack of room in the loft especially with the size of the tank. Cost £50 in parts (not including the tank). I am interested in the price you chaps would charge for this!?