Homeowners typically spend on ductwork when upgrading or extending central air systems. This cost depends on duct material, size, labor rates, and project scope; the price range for ductwork is driven by length, complexity, and location. This article presents exact price ranges and practical budgeting details for the U.S. market.

Item	Low	Average	High	Notes
Total installed ductwork for a mid-sized home	$2,000	$5,000	$10,000	Depends on house size, attic access, and number of zones
Per linear foot (sheet metal)	$4	$6	$12	Includes fittings and basic insulation
Per linear foot (flex duct)	$2	$3.50	$7	Less durable, typically used in non-critical runs
Labor (hourly average)	$60	$85	$125	Ventilation crew with permit handling
Materials (duct, fittings, insulation)	$500	$1,500	$4,500	Depends on gauge, insulation, and air-seal needed
Permits and inspections	$50	$300	$1,000	Region-dependent requirements

Assumptions: Midwest labor rates, standard 26- or 28-gauge sheet metal, R-6 insulation, typical attic access, single-zone system.

What Homeowners Usually Pay For Ductwork

Typical total price for replacing or extending ductwork in a mid-sized, single-family home falls in the $3,000-$8,000 range. The per-unit cost commonly runs $4-$6 per linear foot for rigid sheet metal and $2-$3.50 per linear foot for flexible ducts. Factors driving price include project size, number of supply and return runs, attic or crawlspace access, and whether updated air sealing or insulation is required. A full retrofit with zoning and new plenums can push higher.

Assumptions: standard 1,500-2,000 square foot home, existing furnace or air handler, normal height ceilings, and typical mineral or fiberglass insulation in ducts.

Major Cost Components Of Ductwork Projects

Cost Component	Low	Average	High	Notes
Materials	$500	$1,500	$4,500	Sheet metal, flexible duct, insulation, sealants
Labor	$1,200	$3,200	$5,500	Installation, seam sealing, and testing
Permits	$50	$300	$1,000	varies by municipality
Delivery/Disposal	$50	$200	$600	Waste handling, old duct removal
Equipment	$100	$400	$1,000	Tools, rigid duct benders, blowers
Warranty/Contingency	$100	$350	$800	Limited coverage for ducts and fittings

Assumptions: Midwest region, standard 2- to 3-ton system, single-zone configuration, attic installation with accessible runs.

Key Variables That Change Ductwork Quotes

Run length and access are the dominant price modifiers. The final cost shifts with total linear feet of duct, number of branching runs, and whether runs pass through tight spaces or require floor removal. A second major driver is duct type: rigid sheet metal yields higher upfront costs but typically offers better airflow and durability than flexible ducts. Other thresholds include system size (tonnage) and insulation needs, with larger homes or higher-efficiency retrofits increasing material and labor time.

Examples: a 1,200 sq ft house with 60-100 linear feet of duct in accessible attic runs may sit near the lower end; a 2,800 sq ft home with 180-250 feet of duct and multiple bends in a tight crawlspace will trend toward the high end.

Regional Variations In Ductwork Pricing

Prices shift by climate, labor markets, and access challenges. In coastal areas with higher labor costs, expect averages closer to the upper end of ranges; in rural regions with lower labor rates, prices tend to be toward the lower end. Urban projects often incur higher disposal and permit fees, while suburban projects balance access and travel time. A typical regional delta might be ±15-25% from national averages.

Assumptions: standard home in a temperate climate, no special equipment beyond common tools.

Per-Unit Pricing For Common Duct Types

Rigid sheet metal runs typically cost more per linear foot than flexible ducts. For planning, use $4-$6 per linear foot for sheet metal and $2-$3.50 per linear foot for flex duct, with added costs for fittings and insulation. In multi-story homes, upward adjustments occur for vertical runs and transitions between floors. Per-unit rates help when comparing quotes from different contractors.

Assumptions: standard 28-gauge galvanized metal, R-6 insulation, no custom bends beyond standard elbows.

Labor Consider When Budgeting Ductwork

Labor often represents 40-60% of total ductwork cost. Skilled HVAC installers charge $60-$125 per hour, with project durations ranging from 1-2 days for simple runs to 3-5 days for full home replacements with zoning. Scheduling, access, and permit processing can add to time and cost. Proper air sealing and testing are essential parts of the labor scope and can affect overall pricing.

Assumptions: typical crew size of 2-4 technicians on-site, normal attic or basement access, no emergency or rush scheduling.

Practical Ways To Reduce Ductwork Price

Control scope, compare quotes, and time the project to off-peak seasons. Options include consolidating runs to minimize fittings, choosing standard insulation thickness, using flexible duct in noncritical segments, and avoiding unnecessary zone splits. Some savings come from reusing existing plenum sections if feasible, and from performing pre-install cleaning and sealing to reduce later adjustments. Request itemized quotes to identify high-cost line items and negotiate bundled labor and materials.

Assumptions: no structural repairs, standard ceiling heights, no major drywall work required.

Three Real-World Quote Scenarios

Scenario A: 1,500 sq ft home, 70 ft of rigid duct, single-zone, attic access, standard insulation. Material $900, Labor $2,900, Permits $150, Total $3,950.

Scenario B: 2,400 sq ft home, 180 ft flexible duct, two zones, crawlspace access, no demolition. Material $2,000, Labor $4,200, Permits $300, Total $6,500.

Scenario C: 3,000 sq ft home, 250 ft rigid duct, three zones, challenging attic access, disposal of old ducts. Material $3,400, Labor $5,600, Permits $800, Total $9,800.

How To Compare Quotes By Line Item

Look for clear per-foot pricing and separate line items for materials, labor, and permitting. A high-quality quote breaks down duct type, insulation, seals, testing, and any enhancements like zone control or air balancing. Compare total projected costs and note any assumed conditions, such as attic access or the presence of old asbestos-containing materials, which would raise costs for safety reasons.

Assumptions: U.S. mainland, standard residential retrofit, no major structural work, access to ducts via attic or crawlspace.