"John" wrote in message
oups.com...
Hi
My response 100 heat exchanger is leaking, losing pressure in the CH
system, any idea how much and where's the best place to obtain a
replacement heat exchanger or would I be better replacing the whole
boiler? if
replacing can anybody recommend a suitable boiler that can be fitted
without modifying the existing pipework?

Regards.

Are you sure it is the heat exchanger? If so a new boiler is the best way.
Is it in a cupboard? Is there restriction around to put in a bigger cased
model? What are you DHW needs? How old is the combi?