Ductdraft sizes, routes, and code-checks your ventilation system as you sketch — no CAD experience or engineering degree required.
No credit card required · No CAD experience needed
CAPABILITIES
Tell it the airflow you need — Ductdraft picks the right duct size for you, no formulas required.
Draw your run and Ductdraft snaps it into place, dodging beams and pipe automatically.
Ductdraft checks your layout against SMACNA and ASHRAE rules as you go, in plain language.
Share a clean PDF layout or submittal set with your team in one click.
WORKFLOW
Draw or trace your floor plan right in Ductdraft — no other software needed to get started.
Draw supply and return runs — sizing, pressure, and clash checks update live as you go.
Export a clean, code-checked layout to share or hand off — ready in one click.
Whether you're an engineer or drafting your first system, Ductdraft makes ventilation design simple.