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# Revision history [back]

### How to reduce the Facility Total HVAC Electric Demand Power

Hi everyone,

I wonder that how I can reduce the Facility Total HVAC Electric Demand Power in my model. After simulation, I see that my DX Coiling Coil had a huge impact on the Facility Total HVAC Electric Demand Power (about 80%). Can some tell me which elements impact on the Facility Total HVAC Electric Demand Power?

Here my HVAC System consists of OutdoorAir:Mixer, Coil:Cooling:DX:SingleSpeed, Fan:VariableVolume and AirTerminal:SingleDuct:ConstantVolume:NoReheat: