I recently used C.H.A.P.S to have a new gas central heating install, the standard of work was very poor, there is solder dripped down pipes , green stains on copper pipes , earth cable not resecured to gas pipe on meter, radiator fixed to thin plywood so deemed unsafe by gas assessor as could fall off fixings and flood house. Rubbish left beneath floorboards and also floorboard broken and put back un level. Really wished I had used somebody else