⚡ Fan / Pump Energy

% of full load on average (VFD systems run lower)
Average VFD speed — affinity law applies (power ∝ speed³)

🌡️ Cooling System

Centrifugal chiller: 0.45–0.7; DX rooftop: 0.9–1.3

📊 Annual Energy Cost

Fan/Pump Cost/yr
With VFD Cost/yr
VFD Savings/yr
Cooling Cost/yr
Total HVAC Cost/yr
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