The fan used on the evaporator, the key point of attention.
Quantify: Don't guess airflow and pressure.
Match: Select the fan to operate at its BEP for your specific system curve.
Verify: Measure airflow at startup and adjust. This is the single most important commissioning task.
Maintain: Keep it clean and balanced. The performance degradation is quadratic with speed reduction due to fouling.
Evaluate Lifecycle Cost: The higher efficiency of an ECM motor often justifies its cost through operational energy savings, especially in variable load application
Sep 11,2025