v4.1 [Feb 11, 2013]
Runs on Windows XP, Vista and Windows 7
All calculations involving money or economics, such as the Cost of Energy calculations are now in the ECONOMICS section.
Able to retain user installed data when updating the program
Simple payback calculations
Changed user interface
Automatically calculates thickness tables
Improved report formats
Calculates in both metric and inch-pound units
Ability to add custom fuels
Calculates multiple insulation layers
Updated thermal curves and new insulation materials
v4.0 [Jun 10, 2008]
* Friendlier user interface
* Automatically calculates thickness tables
* Improved report formts
* Calculates in both metric and inch-pound units
* Ability to add custom fuels
* Calculates multiple insulation layers.
