HVAC Systems · Filtration
MERV
Minimum Efficiency Reporting Value—a filter rating scale (1–16) that measures a filter's ability to capture particles of specific sizes. Higher MERV means better filtration but may restrict airflow; balance MERV with system capacity. MERV 8–11 common for residential; MERV 13+ for enhanced filtration.
Common symptoms
- Reduced airflow
- High static pressure
- System strain
Common repairs
- Filter replacement with correct MERV
- Filter size verification
Related terms
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