Right, here goes.
My old central heating boiler is a 25 year old Potterton cast iron lump which, touch wood, has been very reliable. I now want to replace it. Looking at the Potterton website, they do a range of condensing system boilers and a cast iron one which is described as "long life" this suggest to me that condensing boilers are not long life. Here are some questions:
Can any knowledgeable person out there suggest what the life might be.
As I understand it you are not allowed to fit a non-condensing boiler these days though i believe they are still available. Is this true.
What is the realistic gain in efficiency between condensing and non-condensing.
What is a good make to go for, and what are the makes to avoid.
That should do for the time being! All informed and relevant comments welcome.
Clive