Condition
AC Not Cooling Upstairs
Second floor stays warm while main floor cools. Duct design, airflow, or zoning issue.
Possible Causes
Leaking Air Ducts
Gaps in the ductwork allow conditioned air to escape into unconditioned spaces like attics.
Root Cause Analysis →Diagnostic Tests
- Static pressure test
- Duct blaster test
- Visual attic inspection
Repair Options
Severely Clogged Air Filter
A dirty filter restricts airflow, putting strain on the blower motor and reducing efficiency.
Root Cause Analysis →Diagnostic Tests
- Remove filter and test
- Check static pressure
- Inspect for light pass-through
Repair Options