I live in southern AZ. my house is about 6 years old. During the summertime, when the outside temp gets up around 110 or so, the unit runs all day and the temp indside never gets below 80. this is our first summer in the house. Two HVAC techs have checked out the unit (carrier split system) and found nothing wrong with it.
Airflow hasn't been tested but feels a little weak to me. One tech though our flex ductwork may be reducing airflow.
3.5 ton unit
any help much appreciated