HVAC & sheet metal

Ductwork takeoff software for sheet metal estimators.

Duct takeoff is long, repetitive measuring: every run by size and shape, every fitting, every diffuser. RenderDraw proposes runs and counts from mechanical plans with the sheet attached; your estimator applies gauge, construction class and labor.

Send one plan set. See what the AI extracts and what it flags for review. No obligation.

  • Runs by size and shape
  • Fittings and air devices
  • Weight-ready export
Commercial mechanical room with insulated piping, pumps and galvanized ductwork
Duct takeoff

From plan to pounds.

rectangular sq ft = 2 × (W + H) ÷ 12 × length round sq ft = π × D ÷ 12 × length weight = sq ft × lb/sq ft for the gauge

Reviewed runs export by size so your workbook applies gauge and weight.

What gets taken off

The quantities a HVAC estimator actually needs

These are the items RenderDraw proposes from the drawings, each linked to the sheet it came from, for your estimator to accept, correct or reject.

ItemWhat is measured or countedWhere it comes from
EquipmentRTUs, AHUs, VAVs, fans by tagEquipment schedules, plans
DuctworkLinear feet and weight by size and gaugeDuct plans, sections
Air devicesDiffusers, grilles, registers by typePlans, air device schedule
PipingHydronic and refrigerant piping by sizePiping plans
ControlsPoints, sensors, controllersControls drawings, sequences
How it works

From plan set to reviewed quantities.

AI-powered, human-approved. Each stage records what ran, what changed and who approved it.

Start with your bid package

Drawings, specs and addenda together: mechanical plans, equipment and air device schedules, duct sections, controls drawings and the Division 23 spec sections.

AI proposes quantities

Counts, lengths and areas come back with the source sheet and location attached to every row.

Estimator review

Low-confidence items surface first. Your estimator accepts, corrects or rejects each one.

Map to your assemblies

Approved quantities map to your items, assemblies and estimating assumptions.

Price reviewed rows

Labor units, material pricing and supplier quotes apply only to rows that passed review.

Hand off with evidence

Approved quantities move on to pricing and visual CPQ with the evidence trail still attached.

Supported files and tasks depend on your trade and implementation. Confirm them in the free sample run.

Human review, by design

The AI drafts. Your estimator decides.

Speed is easy to promise. Defensible numbers are the job, so RenderDraw keeps the estimator in control of every quantity that gets priced.

  • Source on every row. Each quantity keeps its source sheet, location and reviewer decision.
  • Lowest confidence first. The review queue shows the drawing tile with the detection highlighted and the extracted value.
  • Uncertain items flagged, not hidden. Anything the AI can't confirm goes to the estimator rather than being guessed.
  • Nothing priced before approval. Rows move on to pricing only after they are accepted.
Copper, brass, PEX and PVC plumbing fittings with a pipe cutter for a plumbing takeoff
FAQ

Questions estimators ask

What is ductwork takeoff software?

Software that measures duct runs and counts fittings and air devices from drawings for pricing.

Can AI do duct takeoffs?

Yes. RenderDraw proposes runs and counts for estimator review.

Does it calculate duct weight?

Runs export by size for weight calculation in your workbook using your gauge table.

What should we send?

Mechanical plans, duct sections, schedules and specs.

Start small

See what the AI reads on your own drawings.

Send one representative HVAC plan set. RenderDraw reviews it and follows up with what the AI extracted and what it flagged for review. Your files remain private while the request is assessed, and there is no obligation.

  1. Upload mechanical plans, equipment and air device schedules, duct sections, controls drawings and the Division 23 spec sections.
  2. RenderDraw reviews the set and the scope you want tested.
  3. We follow up with extracted quantities, flagged items and next steps.

Book a meeting with RenderDraw

Bring your drawings, estimating process, or product configuration questions. Choose a time to talk with our team.

Prefer a separate window? Open the booking page.

Free sample takeoffBook a demo