Duct Takeoff Services Built for Sheet Metal Accuracy
Round, rectangular, and oval ductwork all price differently, and a takeoff that treats them the same will be wrong before fabrication even starts. Spiron Engineering provides detailed duct takeoff services that quantify sheet metal, fittings, and hardware by shape and size, so duct fabricators and HVAC contractors can bid and order with real numbers.
Our estimators work across residential, commercial, and industrial projects, delivering the same level of accuracy an in-house team would produce, without the fixed cost attached to keeping one on staff.
Planning & Strategy
Accurate duct takeoffs depend on measuring every shape and fitting individually, not applying one flat rate across the whole system.
- Detailed Scope Review
- Industry Standard Formatting
- Consistent Turnaround Times
- Quality Control System
- Trade-by-Trade Breakdown
- Software-Compatible Deliverables
Ductwork by Shape
Round, rectangular, oval, and spiral duct runs, each measured and priced individually since fabrication cost varies by geometry.
Fittings & Hardware
Elbows, tie-rods, duct liner, stiffeners, duct accessories, joints, and fittings.
Material & Fabrication
Sheet metal raw materials, die sets, tooling, and the labor hours required for fabrication.
HVAC Duct Fabricator Support
Takeoffs built specifically for duct fabricators, quantifying material and delivery costs to match fabrication shop requirements.
How We Approach Your Estimate
We review your ductwork drawings shape by shape, rectangular ducts, round ducts, and their respective fittings are quantified separately, not averaged into one linear rate. This matters most for fabricators, where the difference between duct shapes directly affects material usage and labor time. Every takeoff includes work hours needed to complete fabrication, not just material counts.
Trades We Cover
- Mechanical & HVAC
- Plumbing
- Electrical
- Concrete & Masonry
- Structural Steel & Framing
- Roofing & Waterproofing
- Sitework & Earthwork
Questions? You’re covered
A duct takeoff focuses specifically on ductwork material, fittings, and fabrication labor. A full HVAC estimate also includes equipment like air handlers, chillers, and controls. If you need both, our HVAC Estimating Services covers the complete system.
We estimate round, rectangular, oval, and spiral ductwork, each priced according to its specific fabrication requirements.
Ductwork shop drawings or HVAC plans showing duct sizing and routing. If your plans are still preliminary, we can work from what’s available and note any assumptions made.
We are always ready to help you and answer your questions
