Explore the design tools

Try the input workflows without signing up. Results, final sizing and reports are available in the full tools.

Heating & cooling load calculation

Explore Steps 1–8: project setup, envelope, assemblies and room definition.

Explore effective length, friction rate and duct inputs. The final four sizing columns are locked.

Explore all five input sections. Results and reports are locked.

Explore project setup, monthly inputs and ECM scenarios. Results and LCCA are locked.

Demo inputs are separate from account projects. Create an account to start a saved project.