In uk.d-i-y Jules wrote:
On Thu, 09 Nov 2006 21:31:40 +0000, Duncan Wood wrote:
Although in the case of a fridge the difference in energy effeciency
between a 10yr old one & a modern one makes it uneconomic from either
point of view.

Out of interest, what is it that makes a modern fridge a lot more
efficient than on from say 15 years ago? Better compressor? Better
refrigerant? Better door seals? Better insulation?

'none of the above'?

It varies a lot.
A couple of years ago, I put a meter on a 1980s fridge - and it turned
out that over a week, the energy it used would have qualified for a 'a'
rating.