Condition
Weak Airflow After Filter Change
Airflow did not improve after replacing the filter. Suggests blower motor, evaporator coil, or duct issues.
Possible Causes
Dirty Evaporator Coils
Dust buildup on the coils restricts airflow and stops heat absorption.
Root Cause Analysis →Diagnostic Tests
- Remove evaporator access panel
- Inspect coil surface
- Check temperature delta across coil
Repair Options
Leaking Air Ducts
Gaps in the ductwork allow conditioned air to escape into unconditioned spaces like attics.
Root Cause Analysis →Diagnostic Tests
- Visual attic inspection
- Static pressure measurement
- Smoke leak test
Repair Options