Typical AC duct work cost varies widely depending on home size, material, access, and whether ducts are new, replaced, or sealed. Buyers typically pay between small-project and whole-house ranges; this article breaks down total price, per-foot rates, and the main drivers that change a quote for “ac duct work cost”.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Minor repairs & sealing | $150 | $350 | $800 | Includes duct sealing, small disconnects |
| Partial replacement (1-3 rooms) | $600 | $1,800 | $4,000 | Per room, register-to-branch replacement |
| Full duct replacement (1,500 sq ft) | $2,500 | $6,500 | $12,000 | Includes new trunk and branch runs |
| New ductwork for new build | $3,000 | $8,000 | $15,000 | Varies by complexity and code |
Typical AC Duct Work Prices for a 1,500 sq ft Home
Assumptions: Single-story 1,500 sq ft, standard blown-in insulation, typical attic access, suburban Midwest labor.
For a 1,500 sq ft single-story house the typical total price for full duct replacement is about $2,500-$12,000 with an average near $6,500; per-linear-foot pricing runs roughly $4-$9 per sq ft of conditioned floor area when framed into total cost. Expect $2,500-$5,000 for basic metal trunk-and-branch in easy-access attics, $6,000-$9,000 for insulated flex and tighter layouts, and $9,000-$12,000 for premium metal with new registers and balancing.
Materials, Labor, Equipment, and Disposal Line Items
This table breaks a typical contractor quote into common cost components so readers can compare line items.
| Materials | Labor | Equipment | Delivery/Disposal | Permits |
|---|---|---|---|---|
| $400-$4,000 (sheet metal, flex duct, insulation) | $750-$4,500 () | $50-$600 (lift rental, power tools) | $75-$400 (haul, dumpster) | $0-$500 (local mechanical permit) |
Materials and labor usually make up 70%-90% of the total; ask for the per-hour rate and estimated labor hours.
How Size, Duct Material, and Accessibility Drive Quotes
Major variables change the bottom line: square footage, material type, and access. For example, replacing 200 linear feet in an attic with flex duct costs far less than rerouting 200 linear feet through finished basements or walls.
Numeric thresholds that often trigger large jumps: over 2,000 sq ft (adds 15%-40%), replacing main trunk >10 linear ft with custom metal (adds $800-$2,500), and restricted access requiring >10 hours of labor (adds $750-$1,250).
Practical Ways To Lower AC Duct Work Price On A Remodel
Control scope and timing to reduce costs: keep runs short, avoid major layout changes, and schedule work in slow seasons. Choosing flex duct over custom sheet metal cuts material and labor time.
Specific cost-saving moves include sealing and insulating existing ducts ($150-$800) instead of full replacement, grouping HVAC trades into one visit to reduce mobilization fees ($75-$250 saved), and preparing access openings before the crew arrives.
Regional Price Differences: Metro, Suburban, And Rural Variations
Labor and permit costs differ across the U.S.; expect urban coastal areas to be pricier. Typical percentage deltas: Coastal metros +15%-35% vs Midwest baseline, Large metro +10%-25%, Rural -5%-15%.
Example: a $6,500 average job in the Midwest may be $7,500-$8,800 in a coastal metro and $5,500-$6,200 in rural markets.
Common Add-Ons, Repairs, And Hidden Fees In Duct Quotes
Watch for add-ons that increase the final price: register relocation ($75-$175 each), manual balancing ($200-$800), mold remediation ($300-$2,500), and access panel installation ($60-$150 each).
Request a line-by-line quote including disposal, permit fees, and any diagnostic or rush fees to avoid surprises.
Three Real-World Quote Examples With Specs And Totals
| Project | Scope | Labor Hours | Per-Unit Rates | Total |
|---|---|---|---|---|
| Example A | Seal & insulate ducts, 3 rooms | 4-6 hours | Sealing $350, Insulation $200 | $350-$800 |
| Example B | Partial replace trunk and 4 branches | 10-18 hours | Sheet metal $8-$12/lf, Labor $75-$125/hr | $1,600-$4,000 |
| Example C | Full replacement, 1,800 sq ft | 30-60 hours | $4-$9 per sq ft, Registers $40-$120 each | $4,800-$12,000 |
These examples reflect realistic mixes of labor and materials; ask contractors for unit breakdowns so quotes are comparable.
What To Ask For When Comparing AC Duct Work Quotes
Request a written estimate showing material quantities, labor hours and rates, equipment rentals, permit costs, disposal, and warranty terms.
Compare at least three itemized quotes and verify whether the price includes testing and balancing—omitting it can leave systems inefficient and increase operating costs.