Effeciently cooling a 2 story house???
I have a 2 story house that was built back in the 80's. It's 1492 square feet plus a garage. I belive have a 1 ton Lennox unit on the outside, and then inside the house in a downstairs closet i have the furnace and the turbine unit that pushes air through out the house. I live down stairs and my brother lives upstairs. We live in Texas. When summer started the upstairs rooms started to get really hot. To increase the flow of cold air upstars my brother has chosen to close most of the vents in the various rooms downstairs in hopes that more are will be pushed upstairs, well, i think this works except for the fact that in the room downstairs where i am, i have the vent half open and the air comes blasting out of the vent causeing sore throats and what not. A friend of mine owns a 2 story town home and asked me if i can adjust the flow of air between upstairs and downstairs from the attic, since thats where she can adjust it in her new town home. I checked around in the attic and i cant find anything to adjust the flow of air. I can barely see any ducting up there.
So my questions are,
1. Is there a better way to get more cold air upstairs without having to have the vents downstairs closed?
2. Is it bad for me to leave the vents downstairs closed?
3. Can i have some sort of air "director" installed in the attic to help witht this? Is there a high cost associated?