In article , Lobster wrote:
From my 'favourites' list (culled from this ng on a previous mention
IIRC, but not used by me yet!):
http://www.barlo.co.uk/downloads_heatloss.php

"This software is for PC only and requires Microsoft Windows 3.1 or
later"

Suggests it hasn't been updated for a while (which may or may
not be relevant to its usefulness)

--
Tony Bryer SDA UK 'Software to build on' http://www.sda.co.uk
Free SEDBUK boiler database browser http://www.sda.co.uk/qsedbuk.htm