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Wall

The Wall results focus on calculations related to heat loss and heat gain. These values depend on the Wall’s material and the temperature difference on both sides. 

The properties can be reviewed and edited in the Floor Plan Mode or specific sections of the Heat Load Settings.

Below is a detailed breakdown of each result and how to manage it.

Wall Area

  • What it is: The total area of the wall is calculated as Length multiplied by Height

  • How to review: This value can be reviewed and edited for the Wall’s properties in Floor Plan Mode

Wall Length

  • What it is: The horizontal dimension (length) of the Wall.

  • How to review: Edit the Length of the Wall’s properties in the Floor Plan Mode.

Wall Height

  • What it is: The vertical dimension (Height) of the Wall

  • How to review: Adjust the Height of the Wall’s Properties in Floor Plan Mode

Wall U-Value

  • What it is: The thermal transmittance of the Wall is determined by its material selection.

  • How to review and edit:

    • This value can be edited in the Wall’s properties in the Floor Plan Mode.

    • To change the default Material and U-Value for all walls:

      • Go to Heat Load > Materials and select a new Material and U-value.

    • To adjust the U-value for a specific Wall, update it in its individual properties in the Floor Plan Mode.

Heat Loss Through Wall

The heat loss calculation is determined by the Wall's Area, U-value, and the temperature difference between the inside and outside.

Heat Loss Through Wall Formula

Heat = Area × U-Value × ΔT

Where:

  • Heat: The heat loss (W in metric, BTU/h in imperial)

  • Area: The wall area (m² in metric, ft² in imperial)

  • U-Value: The thermal transmittance of the wall (W/m²·K in metric, BTU/h·ft²·°F in imperial)

  • ΔT: The temperature difference across the wall (°C in metric, °F in imperial)

Reviewing Heat Loss Through Wall

  • The Wall Area and U-value can be reviewed in the Wall's properties.

  • The External Winter Temperature is set in Heat Load > General and may be auto-filled based on the project address.

    • This can be overridden in the room’s properties in the Floor Plan Mode

  • The Room Temperature can be overridden in the Room’s properties in the Floor Plan Mode

Heat Gain Through Wall

The heat gain calculation is determined by the Wall's Area, U-value, and the temperature difference between the inside and outside.

Heat Gain Through Wall Formula

Heat = Area × U-Value × ΔT

Where:

  • Heat: The heat gain (W in metric, BTU/h in imperial)

  • Area: The wall area (m² in metric, ft² in imperial)

  • U-Value: The thermal transmittance of the wall (W/m²·K in metric, BTU/h·ft²·°F in imperial)

  • ΔT: The temperature difference across the wall (°C in metric, °F in imperial)

Reviewing Heat Gain Through Wall

  • The Wall Area and U-value can be reviewed in the Wall’s properties.

  • The External Summer Temperature is set in Heat Load > General and may be auto-filled based on the project address.

    • This can be overridden in the Room’s properties in the Floor Plan Mode

  • The Room Temperature can be overridden in the room’s properties in the Floor Plan Mode

To comprehensively review all wall-related heat load results, export the Heat Load Report, which consolidates all calculations in one centralized document.