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[EnergyPlus_Support] Increased insulation run

Hello,

I am doing a parametric run for a building with increased insulation. For some reason, increasing the insulation results in a fairly significant increase in building fan energy. However, when you look at the sizing, the baseline case has slightly larger fans than the efficient case, as expected. If you look at the occupant comfort report, most spaces are slightly cooler in the summer and warmer in the winter in the efficient case, so I guess this is the reason behind the higher energy use. But why is this happening? Is there a setting I can use to get the same level of heating/cooling in both cases?



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