Buyers typically pay $8-$25 per linear ft for spiral ductwork depending on diameter, gauge, insulation, and finish; total project price ranges widely with labor and fittings. This spiral duct price list explains per-unit pricing, total estimates, and the main drivers that affect final price.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Spiral Duct (6″–8″) | $8-$10 per lf | $11-$14 per lf | $15-$25 per lf | Assumptions: Galvanized, 26–24 ga, no insulation. |
| Spiral Duct (10″–20″) | $12-$16 per lf | $17-$22 per lf | $23-$40 per lf | Assumptions: 24–20 ga, standard fittings. |
| Insulated Spiral (R4) | $18-$22 per lf | $24-$30 per lf | $31-$45 per lf | Assumptions: 2″ fiberglass wrap, standard finish. |
| Installation (labor & fittings) | $5-$8 per lf | $9-$15 per lf | $16-$30 per lf | Assumptions: Commercial access, standard hanger spacing. |
Content Navigation
- Typical Total Price Buyers Pay For Spiral Duct Runs
- Breakdown of Materials, Labor, Equipment, and Disposal
- How Diameter, Gauge, and Insulation Change the Quote
- Site Conditions and Access That Drive Higher Pricing
- Practical Ways To Reduce Spiral Duct Price On a Project
- Regional Price Differences and What To Budget by Market
- Real-World Quote Examples With Specs and Totals
Typical Total Price Buyers Pay For Spiral Duct Runs
For a 100-linear-foot commercial run of 12″ spiral duct, expect a total price of $1,700-$3,500 including materials and typical installation; a 500-linear-foot job commonly costs $8,000-$18,000. Average-priced 12″ spiral ducts usually run $17-$22 per linear ft installed in mid-cost regions.
Assumptions: Midwestern labor rates, galvanized steel, standard HVAC fittings, accessible ceiling height.
Breakdown of Materials, Labor, Equipment, and Disposal
| Component | Materials | Labor | Equipment | Delivery/Disposal |
|---|---|---|---|---|
| Spiral Pipe | $8-$30 per lf | $2-$8 per lf | $0.50-$2 per lf | $0.10-$0.50 per lf |
| Fittings (elbows, takeoffs) | $20-$150 each | $15-$60 each | $0-$20 | $0-$10 |
| Insulation | $4-$12 per lf | $2-$6 per lf | $0.50-$1 | $0-$5 |
| Mounting & Hangers | $0.50-$3 per lf | $1-$4 per lf | $0 | $0-$2 per lf |
Materials typically make up 50%–70% of a small duct job; labor and specialty equipment add proportionally more on complex installs.
How Diameter, Gauge, and Insulation Change the Quote
Diameter affects price dramatically: 6″–8″ spiral pipe is near the low end ($8-$14 per lf), while 18″–24″ jumps to $22-$40 per lf. Thickness matters—24 gauge vs. 18 gauge can add 10%–40% to material cost depending on diameter.
Insulation adds $4-$12 per lf for factory or field-applied options and increases labor by $2-$6 per lf. Numeric thresholds: below 10″ vs. above 14″ diameter; 26–24 ga vs. 20–18 ga steel; insulated vs. non-insulated.
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Site Conditions and Access That Drive Higher Pricing
Tight ceiling plenum, roof work, or needing lifts increases crew hours and rental equipment fees; jobs requiring scissor lifts or boom lifts typically add $150-$400 per day plus operator. Restricted access can increase labor by 25%–100% and equipment charges by $100–$1,200 total.
Long horizontal runs with many offsets increase fittings and sealant costs; expect an extra $2-$6 per lf for runs with more than four bends per 100 lf.
Practical Ways To Reduce Spiral Duct Price On a Project
Ordering common diameters, minimizing transitions, and keeping continuous runs lower the per-lf rate; bundling material and installation with a single contractor often saves 5%–12%. Cleaning and prepping the site before crew arrival can cut labor hours by 10%–30%.
Choose standard galvanized finish instead of painted or stainless steel, and avoid over-spec’ing gauge where code and performance allow lower gauges.
Regional Price Differences and What To Budget by Market
Expect coastal metro areas (NYC, LA) to be 10%–35% above national average; interior and rural markets can be 5%–20% below. Budget ranges: low-cost regions $10-$16 per lf installed; average regions $15-$25 per lf; high-cost metro $22-$40 per lf.
Assumptions: includes typical permit and sales tax variance by state.
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Real-World Quote Examples With Specs and Totals
| Project | Specs | Material Cost | Labor & Equip | Total |
|---|---|---|---|---|
| Small Retail | 100 lf, 10″ 24 ga, no insulation, 6 fittings | $1,200-$1,600 | $700-$1,200 | $1,900-$2,800 |
| Warehouse | 500 lf, 18″ 20 ga, R4 insulated, 20 fittings | $9,000-$12,000 | $3,000-$6,000 | $12,000-$18,000 |
| Office Fit-Out | 250 lf, mixed 8″–14″, some custom bends | $3,000-$4,500 | $2,000-$4,000 | $5,000-$8,500 |
These examples reflect common U.S. bids and include assumptions about normal access and standard labor crews.
Tips for Getting the Best HVAC Prices
- Prioritize Quality Over Cost
The most critical factor in any HVAC project is the quality of the installation. Don’t compromise on contractor expertise just to save money. - Check for Rebates
Always research current rebates and incentives — they can significantly reduce your overall cost. - Compare Multiple Quotes
Request at least three estimates before making your choice. You can click here to get three free quotes from local professionals. These quotes include available rebates and tax credits and automatically exclude unqualified contractors. - Negotiate Smartly
Once you've chosen a contractor, use the proven strategies from our guide — How Homeowners Can Negotiate with HVAC Dealers — to get the best possible final price.