U-Value Tool
What do you want to do?
Pick the path that matches your intent — you can switch modes any time, and assemblies you save are shared between them.
Quick check
Calculate one element
Build a wall, roof, floor or window from material layers — see its U-value as you go. No setup, no model required.
- Live U-value as you edit
- Pick a regional template or start blank
- Save the result to your library if you want
Project analysis
Analyze a whole building
Upload a 3D Rhino model, assign assemblies to layers, and get whole-envelope U-value, heat loss and code compliance.
- Climate file (EPW) drives the recommendations
- Assign per-layer or per-object — split granularity
- Area-weighted UA, breakdown, and design heat loss
One shared library. Anything you save in Quick check appears in your Project library — and vice versa. You don’t lose work when you change mode.