Buyers typically pay $4-$12 per linear foot for spiral ductwork depending on diameter, gauge, and insulation; total installed projects commonly run $1,200-$8,500. This spiral duct price list focuses on material, fabrication, and installation pricing so readers can estimate realistic costs for HVAC runs and shop quotes.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Spiral duct (per LF, uninsulated) | $4 per LF | $6.50 per LF | $9 per LF | Assumptions: 6″–24″ diameters, 28–24 gauge, factory straight runs. |
| Insulated spiral (per LF) | $6 per LF | $9.50 per LF | $14 per LF | Assumptions: 1″–2″ insulation, standard liner. |
| Installed small residential run (total) | $1,200 | $2,800 | $5,500 | Assumptions: 20–60 LF, 8–10 joints, basic fittings. |
| Commercial medium job (total) | $3,500 | $12,000 | $30,000 | Assumptions: 200–600 LF, multiple offsets, labor intensive. |
What Spiral Duct Buyers Usually Pay For Materials And Installation
Typical total installed price for a residential-to-light-commercial spiral duct run ranges $1,200-$8,500 with an average near $2,800. Per-unit material pricing usually falls between $4-$14 per linear foot depending on diameter and insulation.
Assumptions: Midwest labor rates, standard access, 8″–16″ diameters, common fittings; excludes specialty paint or seismic bracing.
Breakdown Of Major Quote Components And Per-Unit Rates
Estimating a quote requires separating materials, labor, equipment, delivery, and overhead so buyers can compare itemized bids. Request line-item pricing for each component to spot markups and scope differences.
| Materials | Labor | Equipment | Delivery/Disposal | Overhead |
|---|---|---|---|---|
| $4-$14 per LF (uninsulated to insulated) | $75-$125 per hour; crews 2-4 people | $50-$250 per day (scissor lift, shears) | $150-$800 per job (small to large) | 10%-25% of subtotal |
How Diameter, Gauge, And Insulation Change The Final Quote
Diameter, metal gauge, and insulation thickness are primary variables: small 4″–6″ ducts are cheaper; large 20″–30″ ducts cost significantly more. Expect a price jump near these thresholds: under 8″ diameter, 8″–16″, and over 20″.
Examples of thresholds: 6″–8″ run $4-$6 per LF; 10″–16″ $6-$10 per LF; 18″–30″ $10-$18 per LF depending on gauge and stiffening.
Site Conditions And Labor Drivers That Alter Pricing
Access, ceiling height, and required crew size change labor hours and equipment rental. Jobs above 12 feet or with multiple offsets typically add 20%-60% to labor hours.
For example, a single installer at $90/hour working 12 hours vs. a two-person crew at 8 hours will shift total labor cost materially; include lift rental for high ceilings.
Practical Ways To Cut Spiral Duct Costs On A Project
Scope control, material choices, and timing reduce price: shorten runs, choose lower gauge where allowed, avoid custom fittings, and schedule off-peak work. Saving 10%-30% is realistic by limiting run length and choosing uninsulated duct where code permits.
Other tactics: provide clear access, bundle multiple trades for one mobilization, accept contractor-supplied standard fittings, and get three written quotes to compare line items.
Regional Price Differences And What To Budget By Market
Prices vary by region; urban coastal markets run 10%-30% higher than Midwest/rural markets. Budget adjustments: add 20%-30% for NY/CA metro areas, subtract 10%-15% for rural Midwest.
| Region | Relative Price | Example Installed Range |
|---|---|---|
| Urban Coastal (e.g., SF, NYC) | +20%–30% | $1,500-$10,500 |
| Sunbelt/Suburban | ±0%–+10% | $1,200-$8,500 |
| Midwest/Rural | -10%–0% | $1,080-$7,650 |
Typical Add-Ons, Removal Fees, And Sample Quotes To Compare
Common extras include insulation, firewrap, perimeter booting, balancing, and old-duct removal; these add $150-$1,800 depending on scope. Ask for separate pricing on each add-on to compare apples-to-apples quotes.
| Sample Job | Specs | Labor Hours | Per LF | Total |
|---|---|---|---|---|
| Small home run | 40 LF, 8″ insulated, 6 fittings | 10 hours | $9 per LF | $1,360 |
| Retail tenant | 300 LF, mixed 10″–18″, insulated | 80 hours | $10 per LF | $4,300 |
| Light industrial | 600 LF, 18″–24″, heavy gauge | 200 hours | $12 per LF | $9,200 |
Questions To Ask Contractors That Directly Affect Price
Ask for line-item materials, gauge, insulation R-value, lift days, permit fees, and warranty terms. Insist on written unit prices for LF, fittings, hangers, and balancing so change orders are predictable.
Request lead time, crew composition, and any minimum charge; these details explain why two bids with similar totals can differ widely in scope or durability.