What are the key inputs required for Rhvac to calculate peak heating and cooling loads?

The key inputs required for Rhvac to calculate peak heating and cooling loads include building geometry, construction materials, window and door sizes, insulation, and climate data. Additionally, Rhvac can automatically retrieve Heat Transfer Multipliers (HTM) values for walls, windows, doors, and roofs from ACCA Manual J. Users can also manually enter data or use the optional Drawing Board program to draw a floor plan and automatically import the required data.