Roadmap

Our team is small, but we are always improving. Here is our tentative roadmap for future development and a list of current xStar analysis limitations. Please email rick@xstarresearch.com with additional feedback, roadmap requests, or to vote for increasing the priority of a certain feature.

Roadmap

December 2025: A1-A3 embodied carbon analysis

December 2025: hourly energy analysis

TBD: automatically map Revit families to xStar assemblies

TBD: below grade walls U-factor calculation

Analysis Limitations

Revit Data Export

• Curved surfaces in Revit are not supported.

• Demolition phases are not supported. Current behavior is: demolished elements are included in the xStar model if they were created or demolished in a phase selected by the user in the Setup dialog.

• Door geometry is assumed to be rectangular. Width and height are taken from the family built-in width and height parameters.

• Structural foundation footings with multiple materials (e.g. concrete + insulation) have a single volume calculated for them.

Cost Analysis

• Demolition costs are not automatically included and must be explicitly added by the user.

Energy Analysis

• Framing with unfilled cavity has assumed value of R-0 (this is conservative).

• Double stud framing not supported when stud layers are adjacent.

• Below grade walls are not supported. U-factor calculations assume above grade walls.

• Balance point energy analysis is low fidelity and not accredited (see Heating & Cooling Load Analysis for more details).