Hi, can anyone help me, i am a single mum with a Baxi Combi 80HE boiler fitted 3 yr ago and had nothing but trouble. Pressure is always falling to zero, water going cold whilst showering (not good for my small kids) and now the overflow is constantly pouring water out. Ive had a couple of hundred pounds spent on it and to be honest its no better, one visit from a plumber had a new switch which regualted the water temp (£150) and then a pressure relief valve fitted (£60) which stopped it at the time and a day later its leaking outside again! PLease help... i cant afford anymore plumber fees, especially when things are not being resolved. Im really fed up can anyone help? Any advice will be greatly appreciated, thanks )