I want to know the answer to the following question:
How much energy does an HVAC system use in commercial locations?
All the background I'm provided with is that "In the United States, heating, ventilation and air conditioning (HVAC) systems account for 30% (4.65 EJ/yr) of the energy used in commercial buildings and nearly 50% (10.1 EJ/yr) of the energy used in residential buildings.". Is that enough to answer the question?