hello i am currently running pipe work for a new heating system, i have yet to sort out the gas supply pipe and get a boiler installed, i hope gas engineers will be looking for work in a few weeks. It appears i thought i was doing myself a favour by going for a combined f and e but have since heard on here that onlt some boiler can be connected to this system, have a still good a good choice of quality boilers or not? 4 bed house with water cylinder and ensuite.