On 28/08/2014 07:46, harryagain wrote:

Energy saving is about a multitude of small things.
Draughtproofing one window doesn't save much but if you do the whole
house....


You end up in a warmer house with no draughts, with enough extra
moisture in the air to damage your health by increasing the amount of
fungus spores floating around in it. Unless you install heat exchangers
and forced ventilation, which uses almost as much energy as heating the
air coming in via the natural ventilation you blocked up.

--
Tciao for Now!

John.