Standard order-of-operations to prevent misdiagnosis
A. Airflow first (record findings)
| Check | Result (OK/Fail) | Notes / measurements |
|---|---|---|
| Filter | — | — |
| Returns | — | — |
| Blower | — | — |
| Coils | — | — |
| Duct restrictions | — | — |
B. Balance second
| Room/Zone | Delta (F) | Notes / action |
|---|---|---|
| — | — | — |
C. Efficiency third
| Metric | Spec/Target | Measured | Interpretation |
|---|---|---|---|
| — | — | — | — |
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