LAB-018 / Nominal air-change estimates / Building
Ventilation Planner
Estimate nominal air-change time from space dimensions and rated airflow. Compare rectangular, cylindrical, or custom volumes, switch units, and copy a timestamped planning record.
Open Ventilation Planner ↗Why I built it
A ventilation discussion needs visible inputs and assumptions. This calculator puts space volume, rated airflow, and target air changes together so a reviewer can see how the estimate was produced.
Current development
Version 1.0.2 was deployed for testing on September 8. The repository records 17 passing calculation tests and 10 passing browser stories after three fixes. Calculations run in the browser without an account or saved project.
Repository review: September 15, 2026
What remains open
Testing build; qualified review and field validation remain open. Results are nominal rated-flow estimates with no delivered-flow correction. They do not establish safe entry or atmospheric clearance.
Hypothesis
Can visible inputs and a copyable record make nominal ventilation estimates easier to review?
Track whether reviewers can reproduce the estimate and identify its rated-flow assumption. Status: open.