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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

As an engineer specializing in HVAC fans, your focus shifts from purely commercial considerations to the deep technical and application-specific details that ensure optimal system performance, reliability, and efficiency. Here is a comprehensive breakdown of the critical factors you need to engineer and specify.