Todd wrote:
I have a two story house with vaulted ceilings throughout. I had AC
put in last year, but the upstairs doesn't really cool down. The front
of the house has the biggest windows, and is West Facing, so it gets
all of the afternoon sun. Last year, I also replaced all of these
windows with much more efficient windows.

What did the contractor's heat gain calculation say that you needed in
BTU to cool the house, and how big a system did they put in? Is it
zoned?