Running a heating and cooling analysis

Any referenced datasets can be downloaded from "Module downloads" in the module overview.

Running a heating and cooling analysis - Exercise

  1. Open the practice file, Small Medical Center - Analysis Running02.rvt.
  2. Select the analyze tab, go to the Reports and Schedules panel and select Heating and Cooling Loads.
  3. You can also use the keyboard shortcut by typing LO.



  4. Under Building Type, scroll through list to select the appropriate building type for your project.
  5. On the left is the preview pane showing your model.
  6. Notice the (2) tabs on the right - General and Details.
  7. Let's talk about these Parameter choices under the General tab first.
    1. Building Type



      1. It's important you make sure the building type is set correctly.
      2. Scroll through list to select the appropriate building type for your project. Let's choose Hospital/Healthcare here.
    2. Location



      1. The location is taken from your project geographic location in the Manage tab, under Project Location.
      2. Also, part of the heating and cooling loads analysis is based on the outside temperatures from the building's location.
    3. Ground Plane
      1. What level you want the analysis to start from.
      2. We'll leave it set to the Ground level.
    4. Project Phase
      1. Leave it set to New Construction.
    5. SLIVER Space Tolerance
      1. Gives you the ability to ignore space types like the chase between rest room walls.
      2. Accept the 1'-0" default for now.
    6. Building Envelope
      1. Use the default, which is "Use Function Parameter". This is defined in the walls of the architectural model – how to wall is being used – interior or exterior.
    7. Building Service



      1. Refers to the type of system being used to heat and cool the building.
    8. Schematic Type:



      1. We'll use the default, but you can specifically define the construction type for the roof or walls.
    9. Building Infiltration Class:
      1. This will estimate how much of the outside air is going to infiltrate into the building.
      2. Setting it to None will exclude this information.
    10. Report Type:



      1. How detail do you want the report to be.
      2. For now, we will use "Standard" report type.
    11. Use Load Credits:
      1. For now, leave unchecked. Basically, this has to do with heat or cool air moving from one zone to another through a partition, creating a positive or negative load credits.
  8. Once you are done with setting the General choices, go to the Details tab.
  9. Select one of the spaces in the list.



  10. To help identify the space’s location in the model, choose the icons at the upper right to either highlight or isolate it in the viewing pane.
  11. Under Space Type below, you can now modify its type by choosing the triple (…) dot hidden button to get access to the list of space types we saw earlier.
  12. This will let you revisit the space's type one more time making sure it’s correct before running the report.
  13. If you decide to run the report later, you can always select "Save Settings" at the bottom.
  14. Once you are done choosing all the settings in both the General and Details tabs, select Calculate.
  15. Once Calculate is complete, Revit will display the results of the analysis report.
  16. To access this report or any others in the future, go to Project Browser under Report category.