on Jul 31, 2012:
"The initial cost will make up in savings in the long run."
Realistically, most window replacements don't pay off in less than 20 years, often longer. Even double pane windows aren't much more efficient than single pane. Triple pane windows can be more efficient but are very costly and extend the payback period out even longer.
on Jun 11, 2012:
Very glad you learned that replacing historic windows isn't the way to go! Just work on weather stripping and keeping up with the glazing and of course maintain the storm windows you have and you will be able to keep the historic fabric intact. Congrats on the new home!
on Jun 06, 2012:
Insulating the walls of older homes is usually not a good idea. If you have plaster walls, the insulation can trap moisture and cause damage to both the interior and exterior walls. Also, you almost never see the pay back in savings to justify the cost, especially if you do the other things that were outlined in the audit. These links explain the pitfalls of insulating the walls of old homes.
Myths About Insulating Old House Walls
Improving Energy Efficiency in Historic Buildings