Changing boiler in my own house.

[PETE 123]

Im changing my boiler potterton profile due to recent increase in gas price
this is my own house do i put one in same size or smaller than load as its condensing will stay condensing mode with smaller boiler longer so should save money any input please.

 

[cjg]

there are many facters to look at what is the size now, how many rads. what size rads in what size rooms. whats the pipe size to the rads.
you really need some one with the no how to look at it all. its like getting a heat pump and finding it just will not work withwhat you have,.