Hi all, Myself and my wife have moved to a 3 bedroom semi detached house for about a year and we're thinking of replacing the old central heating with a new one pipes and rads included. What we have is a cylinder boiler in the bathroom inside a closet and a gas boiler in the kitchen. I believe the cylinder is to supply hot water to the taps and the gas boiler is for central heating. I'm not sure if the gas boiler also feeds the cylinder one to keep it toped up. Not sure. Does anyone know how much this could cost me? I know it's quite a big job with all the pipes replaced and some perhaps repositioned but just haven't got a clue how much it would set me back. Any answers would be apreciated. Thanks all.