I am modeling a 50,000 sqft, 3 story office building in a hot and dry climate (Central valley, California). The building is currently set up with 3 thermal zones; one per floor. I am using a four pipe fan coil system with constant speed pumps for heating and cooling. The model runs well with no errors, and both heating and cooling setpoint temperatures are met throughout the year.
When I run the model, the HVAC energy is distributed as follows: cooling: 82%, heating: 12%, fans: 5%, pumps: 2%. This doesn't seem right, and I don't understand why the pumping and fan energy is so low. Any thoughts here?