On Mon, 12 Oct 2009 11:47:34 -0700 (PDT), js.b1 wrote:
Amazing how many people with no CWI & no loft insulation believe the
DG salesmen than you "lose 50% of your heat through your windows". DG
reduces the heat loss through the windows typically by 50%, which is
not the same thing.

Quite. When you do the sums (amount of money spent on heating - only
heating) and the saving from DG, you never get your money back. The
savings is less than the interest the money would earn. At least it
used to be when savings rates were 4%.