[djmcmath]

Geez, 1WP, I don't even get snow drifts in my house, and my windows were installed in 1927! But it did get awful drafty before I put saran wrap up over all the windows. I'm slowly going through replacing with Andersen, but it's taking time (and money!!).

What's the difference between a window that goes opaque on demand and just pulling the blinds (aside from the fact that some light heats the blinds, anyway)? Is there really a significant gain here?

Dan