Why Upstairs Rooms Stay Hot in Summer

Heat rises, but airflow matters too

Upper floors often gain more heat from sun exposure and roof areas. If airflow is weak, rooms can stay uncomfortable even when the AC runs.

Possible causes

Dirty filters, blocked vents, leaky ducts, poor return air, insulation gaps and AC issues can all contribute to hot upstairs rooms.

Ductless may be an option

For additions, older homes or rooms that ducts do not serve well, ductless AC can provide focused comfort without extending ductwork.