Most homeowners pay $4-$12 per sq ft for new residential ductwork, with total system costs typically ranging from $800 to $6,000 depending on home size and scope. This ductwork cost per square foot summary explains typical low-average-high ranges, common assumptions, and the main drivers that determine final pricing.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| New Basic Flexible Duct | $4 per sq ft | $7 per sq ft | $10 per sq ft | Assumptions: single-story, 1,200–1,800 sq ft, standard registers. |
| Sheet Metal (Galvanized) | $6 per sq ft | $9 per sq ft | $14 per sq ft | Assumptions: moderate complexity, accessible attic or basement. |
| Full System Replace (including trunk/branch) | $800 total | $3,200 total | $6,000 total | Assumptions: 1,200–2,500 sq ft home, permits, basic insulation. |
Typical Total Prices And Per‑Square‑Foot Estimates For Home Ductwork
Expect per‑sq‑ft pricing to vary by duct type: flexible, sheet metal, or spiral metal, with flexible usually cheapest and spiral metal most expensive.
Typical total price for a full duct replacement: $800-$6,000. Average for a 1,800 sq ft home: $2,500-$3,500. Per‑sq‑ft ranges: flexible ducts $4-$10 per sq ft, galvanized sheet metal $6-$14 per sq ft, insulated spiral $8-$18 per sq ft. Assumptions: Midwest labor rates, normal attic/basement access.
Breaking Down The Quote: Materials, Labor, Equipment, Delivery
Most contractor quotes split into materials, labor, equipment rental, and delivery/disposal charges—expect labor and materials to be the largest shares.
| Cost Component | Low | Average | High | Typical Share |
|---|---|---|---|---|
| Materials | $200 | $800 | $2,000 | 30%-45% |
| Labor | $300 | $1,200 | $3,000 | 35%-55% |
| Equipment | $0 | $150 | $600 | 5%-10% |
| Delivery/Disposal | $50 | $200 | $600 | 2%-6% |
| Overhead/Permits | $50 | $250 | $800 | 5%-10% |
How Duct Type, Insulation, And Layout Change The Unit Price
Choosing duct material and insulation level can change per‑sq‑ft pricing by 25%–100%.
Examples: uninsulated flexible run: $4-$6 per sq ft; insulated flexible: $6-$9 per sq ft; galvanized rectangular: $6-$14 per sq ft; insulated spiral metal: $8-$18 per sq ft. Long trunk runs, many offsets, or tight soffits add labor time and increase per‑sq‑ft cost.
Site Conditions And Size Thresholds That Raise Ductwork Price
Key variables with numeric thresholds include attic access, linear run length, and number of registers—each can add measurable costs.
If attic access requires a platform or scissor-lift, add $150-$800. Runs over 50 linear feet per trunk often add $1.00-$3.00 per linear ft. More than 10 supply/return registers typically adds $40-$120 per register for boots and balancing. Crawlspace or multistory complexity can add 15%-40% to total price.
Practical Ways To Cut Ductwork Price On A Remodel Or Replacement
Buyers can reduce cost by minimizing scope, choosing simpler materials, doing prep work, and scheduling during off‑peak seasons.
Specific tactics: retain existing trunk where feasible instead of full replace; choose flexible insulated duct over custom sheet metal; seal and insulate exposed ducts rather than rerouting; provide clear attic access to lower labor time; get 3 competitive quotes and check line‑item breakdowns.
How Regional Market Differences Affect Ductwork Pricing
Labor-driven regional differences commonly move prices ±15%–40% between low-cost and high-cost markets.
Typical deltas: Northeast/West Coast prices +15% to +40% versus Midwest/South. Rural markets can be 5%-20% lower but may include travel minimums. Hot climates may favor larger HVAC sizing but not necessarily higher duct per‑sq‑ft rates.
Common Add‑Ons, Removal Fees, And Time Estimates To Budget For
Include likely add-ons: removal/disposal, register replacement, balancing, and permit fees when planning a budget.
| Add‑On | Typical Price | When Required |
|---|---|---|
| Old Duct Removal & Disposal | $150-$600 | Full replacement, contaminated ducts |
| Register/Grille Replacement | $20-$75 per fixture | Visible damage or style update |
| Air Balancing | $150-$450 | New systems with uneven flow |
| Permit/Inspection | $50-$400 | Local code requirements |
| Emergency/Rush Service | $75-$150 surcharge | After-hours or urgent repairs |
Three Real‑World Quote Examples With Specs And Totals
Concrete examples help translate per‑sq‑ft estimates into real totals for common jobs.
| Scenario | Specs | Labor Hours | Per‑sq‑ft | Total |
|---|---|---|---|---|
| Small Repair | Replace 6 registers, patch 30 sq ft flexible | 3-4 hours | $4-$6 per sq ft | $300-$550 |
| Full Replace 1,200 sq ft | New flexible main+branches, 10 registers | 16-24 hours | $5-$8 per sq ft | $1,200-$2,400 |
| High‑End Sheet Metal 2,500 sq ft | Galvanized trunks, insulated spiral | 40-60 hours | $9-$15 per sq ft | $4,500-$12,500 |