Hi wise Mumsnet people. Our 20 yo boiler is kaput. Started looking for a new one and the choice is overwhelming. I have a medium to smallish 3 bed 1 bathroom properly and I know I would like a Worcester Bosch Combi . Not sure if electric or gas ? Also how much for a new boiler for a house of this size incl installation. I have BritishGas over next week for a quote but of corse I will obtain a few. Thank you So much.