We are replacing an 11 year old Goodman HVAC unit and are trying to decide what brand to purchase. The first contractor who provided us with an estimate told us to avoid anything made by Rheem or Ruud. He said that these units were not adequately redesigned when the minimum SEER rating was raised from 10 to 13. He explained that in order to achieve the desired SEER rating, they simply reduced the airflow through the unit, resulting in systems which do not adequately cool. We live in Nashville, TN, and it gets pretty hot here in the summer, so cooling is important. However, all the consumer sites we have visited rate Rheem/Ruud highly, and we have found no corroborating evidence of this contractor's complaint. Does anyone know if he has provided us with accurate information?