In article ,
T i m wrote:
Would you think a new back boiler would be *much* more efficient than
a 25 year old one (allowing for wear / tear etc) and how far off that
would it be compared to a new 'super duper' one do you think please?

The problem with a back boiler is that it pulls in hot air from the room
and shoots it up the chimney - to be replaced with cold from outside.
Which was known to be inefficient long before condensing boilers arrived.
Hence balanced flue boilers which have been around for many a year.

Personally, I'd investigate replacing it with a modern condensing type.
The fuel savings may well repay the cost quickly. And, of course, there
are the safety benefits of a room sealed device.

--
*The problem with the gene pool is that there is no lifeguard *

Dave Plowman London SW
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