Good morning all, I'm after advice so I hope this is the appropriate page to ask. My wife is opening a health clinic and there will be 4 treatment rooms, a small kitchen and toilet. I haven't got a clue what to use for hot water but it will be electric. Each of the 4 treatment rooms will have a WHB and hot water used will not be that much, frequent hand washing etc in the rooms, minimal dishes and a few litres everyday for floor cleaning. I've been looking at 100l unvented cylinders (my preferred choice) and I've also been looking instant in-line heaters but I have no experince or knowledge of them. My concern with them is the pressure if more than one tap is on but I can't imagine that will happen frequently. Any thoughts would be appreciated and thanks in advance folks.