Curtains do not limit the greenhouse effect that occurs when light passes through glass or another refracting surface. They help but with passive solar it is normally better to shade a window from the outside in summer and remove the shade in the winter.

You can do this with awnings (quick solution) or plant a deciduous shade tree on in the path of the sun where you want summer shade (long-term solution).

My 'Aspen Contemporary' read house with large and many windows has tint and it does help. Checkbook guy, I know my limits so I can't speak to the install.

Hank's contact was at my place today, nice guy. Should have a quote soon but it sounds like ~$5.50/sf for the material I'm looking at. Seems reasonable, I'll know more when I see the final #'s.

Thanks all

We went with plantation shuttlers on the 1st floor and it made a huge difference during both, winter and summer temperatures. They are expensive but well worth it. Since heat rises, the rooms seemed a bit warmer than expected and we are also considering tinting the upstairs bedroom window. I also set the A/C at 71 all of the time.... home or not.... 71 feels good....

Man, I want less trees... dang things are blocking all my solar production :)

Installation complete. So far I'm impressed, cant tell the material is there and the glare is way down.

x2 on 3M. We have major art in an all glass house. Put the 3M (professionally installed) stuff on it has been great. Not necesarily cheap but considering the value of the art, worth it.