I am new to the forum and clueless when it comes to how this stuff works so I really need some help here. I re-built a large house in the suburbs of New Orleans that was damaged in Katrina. This is what was installed in the house, which is a two story home and about 2700 square feet. Again I am a novice so this is what I purchased to my belief.
American Standard Allegiance 16 2 speed compressor 4.5 ton
American Standard Variable Speed Furnace, I believe to be 80,000BTU? It says Freedom 80 Comfort R.
American Standard brand new aluminum coils
Upstairs the stuff basically sits on what would be the third floor of the house so I re-used all of the equipment up there which is about 12 years old. I've never been up there so I don't even know what brand it is. I bought a new 2 ton American Standard Allegiance 13 for it.
The house is miserable. $7200 in equipment and it's horrible in here, not to mention a $400 energy bill. One of the problems is surely the windows in the house. I only needed to replace 3 of the 18 windows so the windows aren't the greatest. The house was down to the studs on the first floor, and I did the insulation so it's well insulated. Of course it doesn't help that it is 90-95 degrees during the summer.
1. Windows need to go?
2. Didn't buy big enough for upstairs? 900 square feet up, 1800 down
3. Thermostats? They look cheap and I know that my parents had a two speed and you could see what speed it was running on. The one upstairs is the cheapest digital type you can buy and the one downstairs is a Honeywell TH5220D. It doesn't say anything in the manual about two speeds so I have no idea if the thermostats the A/C guy installed are any good for these systems?
4. Bad vent setup? I have hot spots including the master bedroom where it's just really MISERABLE! I have a Weather Channel thermometer and it's impossible to get it cooler than 76 in the room. Just now I did 72 on both thermostats (up and down) and it got to 76 and no better. Both shut off as the thermostats say 72 but the master is now back to 78 with 61% humidity.
Thanks a million for any help!!