We recently moved into a 2,500 sq ft, two-story home in the Dallas, TX area, built in 2016. The east, south, and west sides receive full sun. The attic has soffit vents on three sides, two passive roof vents, and no ridge vent.
On hot days, our 3.5-ton central A/C (also a 2016 unit) runs almost continuously. Downstairs is constantly too cold and the registers blow a strong, definite breeze. Upstairs, where the bedrooms are, is constantly too warm and stuffy, and the registers have such weak airflow that it is hard to tell if the A/C is running. The air handler is in a very small upstairs closet, leaving little room to install a larger unit. There is one return downstairs and one return upst
