AI for HVAC Duct Takeoff: Linear Duct, Fittings & FCU/AHU Counts
Save precious time
Stop trawling through plan sets. Let AI prepare a draft HVAC takeoff so you can focus on pricing and strategy.
Keep numbers traceable
Every length, fitting, and equipment count links back to the source drawing sheet for fast checks and clarifications.
Stay flexible
Addenda happen. Regenerate and re-issue quantities quickly when drawings or specs change.
Upload PDFs (plans, schematics, schedules) and run a simple prompt. A draft HVAC takeoff is prepared and you’re notified when processing completes.
How It Works
- Upload your PDFs — Add plan drawings and any HVAC schedules or notes (duct sizes, equipment schedules, legends).
- Write your prompt — Tell Civils.ai what you need (for example: “Linear duct by system & size, fittings by type, and FCU/AHU counts per floor”).
- Click “Run” — The platform prepares a draft takeoff from your drawings and schedules.
- QA review & adjust — Your team reviews the draft, validates assumptions (e.g., sizes, systems), and fixes anything before release.
- Share with confidence — Export with clear references back to the source PDFs for stakeholder review.
Upload PDFs
Drag & drop drawings and select Extract CAD data. Works with scanned, historic, and multi-sheet plan sets.
Type out your prompt
Say what you need in natural language (e.g. “measure linear duct by size and system, count fittings by type, and list FCU/AHU per floor”). Hit Run and the AI performs the takeoff; your QA team reviews.
Get results, review & export
What the Draft HVAC Takeoff Can Cover
The goal is a clean starting point—prepared from your drawings and schedules—so your team spends more time refining and less time starting from scratch.
Typical items
- Linear duct lengths by size and system (Supply/Return/Exhaust/Fresh Air)
- Fittings counts by type (elbows, tees, reducers, transitions, dampers)
- Equipment counts: FCUs & AHUs (by floor/zone when shown)
Assumptions & clarity
Sizes, systems, and equipment are taken strictly from the plan drawings and schedules you provide. No inference beyond documented information.
What to Expect (and What Not To)
Overview
What you can expect
- A prepared draft HVAC duct takeoff to support your bid
- Clear references back to drawings and schedules
- Faster reviews and fewer back-and-forths
Limitations to note
- Not a 100% automated takeoff—human QA is essential
- No 3D coordination or clash detection
- No inference of sizes/systems beyond what’s on the drawings
- Pipework
- Ductwork
- Cable tray
- CHWS
- CHWR
- CHWP
FAQ
Is this suitable for busy bid periods?
Yes. It prepares a draft quickly so your team can review, adjust, and price with confidence instead of starting from a blank page.
Can we trust the numbers?
Use the draft as a starting point. Your QA team verifies sizes, systems, and counts before releasing numbers to stakeholders.
Where do the quantities come from?
From the PDFs you upload—plan drawings and schedules. Everything stays traceable to source pages for easy review.
What about complex 3D scenarios?
3D coordination and clash checks aren’t included. The tool prepares a 2D draft takeoff based on what’s shown in the documents.
Prepare Stronger HVAC Duct Takeoffs with Civils.ai
Upload your drawings and schedules, write a quick prompt, click run—then let your QA team review and release a clear, traceable takeoff.
Civils.ai is an assistive tool for bid preparation. Final quantities and assumptions should be reviewed and approved by qualified professionals.