HVAC SYSTEMS - Low Heating and Cooling Demand


Hello All,

On the current, I am dealing with midrise apartment simulation. My main objectives are annual cooling and heating energy demand but results are so low than I expect.

Location is in ASHRAE climate 4A.

Do you have any suggestions for solving it?

.gh file and .epw link:

Thanks in advance,

Do you think it is related with Natural Ventilation?

Because model does not consist any natural ventilation module.