Ductwork Installation Cost Calculator
Estimate the cost to install or replace ductwork based on linear footage, duct material, and options like mastic sealing and zone controls.
A ductwork installation costs $2,000 to $8,000, with a national average of $3,800. Use the calculator below to estimate your cost by size, quality tier, and location.
Last updated: March 25, 2026
Ductwork Installation Cost Calculator
Estimate the cost to install or replace ductwork based on linear footage, duct material, and options like mastic sealing and zone controls.
Estimated Total
$3,800
Itemized Breakdown
This calculator provides estimates based on national averages adjusted for your region. Actual costs may vary significantly based on specific project conditions, contractor availability, material prices, and local market factors. Always get at least 3 quotes from licensed, insured contractors before starting your project.
Want the full picture?
Read our complete Ductwork Installation cost guide with material comparisons, contractor tips, savings strategies, and regional pricing data.
Quick Cost Reference
Cost by Tier
Flex duct replacement, accessible attic or crawl space, straightforward run
Sheet metal main trunk with flex branches, new system for 1,500 sq ft
Sheet metal throughout, exposed basement, complex multi-zone layout, test and balance
How This Calculator Works
This ductwork installation cost calculator estimates your total project cost from four inputs: project size, quality tier, the options you select, and your location. It combines material and labor rates for your chosen tier, adds typical permit costs, then applies a regional cost multiplier so the estimate reflects pricing in your state.
Estimates use 2026 cost data cross-referenced from multiple industry sources. Treat the result as a planning range, not a quote. Your final price depends on your specific scope, material choices, and local contractor availability, so collect at least three itemized bids before you set a budget.
What Affects Your Ductwork Installation Cost
Duct Material: Flex vs. Sheet Metal vs. Fiberglass
$3 - $20 per linear footFlexible duct ($4-$8/LF installed) is cheapest and fastest to run but less efficient due to bends and sags. Sheet metal ($12-$25/LF installed) is the industry standard for trunk lines - durable, smooth interior, and easy to seal. Fiberglass duct board ($10-$18/LF) provides built-in insulation but is prone to interior liner damage. Most good systems combine sheet metal trunks with flex branches.
Linear Footage and Run Complexity
$500 - $5,000A simple replacement of a single run in an accessible attic costs $500-$1,000. A whole-house new duct system in a 2,000 sq ft home typically requires 150-250 linear feet of main trunk plus branches, pushing costs to $4,000-$8,000. Every elbow, transition, and register boot adds cost. Runs that must pass through finished walls cost 2-3x as much as open attic runs.
Accessibility: Attic vs. Basement vs. Walls
$500 - $4,000Attics and crawl spaces with good access are the cheapest location - crews work quickly. Exposed basements add some complexity but remain accessible. Running ducts through finished walls or between floors requires drywall cuts, patching, and painting that easily doubles the labor cost. Ask your contractor to confirm access before accepting a quote.
Multi-Zone vs. Single-Zone
$800 - $3,000A single-zone system uses one thermostat and one duct layout. Multi-zone adds motorized dampers, zone controllers, and additional thermostat wiring. Two-zone systems add $800-$1,500; four-zone systems add $2,000-$3,500. Zoning is most valuable in two-story homes where temperature differences between floors are significant.
Sealing and Insulation Requirements
$200 - $1,200Unsealed ducts lose 20-30% of conditioned air to attics and crawl spaces. Mastic sealant application on all joints costs $200-$400 and is almost always worth it. Insulating ducts in unconditioned spaces (R-6 to R-8 wrap) adds $0.50-$2.00 per linear foot. Some utilities require duct sealing and leakage testing (called duct blaster test, $150-$300) to qualify for rebates.
Frequently Asked Questions
How much does a ductwork installation cost?
A ductwork installation costs $2,000 to $8,000 for a typical project, with a national average of $3,800. Budget projects start around $500, and premium work can reach $15,000. Use the calculator above for an estimate matched to your size, quality tier, and state.
How does this ductwork installation cost calculator work?
It combines 2026 material and labor rates for your selected quality tier, adds typical permit costs and any options you choose, then applies a cost multiplier for your state. Adjust the inputs to see your estimate update instantly.
Is this calculator free to use?
Yes. This ductwork installation cost calculator is free, requires no signup, and returns instant estimates.
Does the estimate include labor and permits?
Yes. Each estimate combines material and labor costs for your chosen quality tier plus typical permit fees. Your final price still depends on your specific scope and local contractor rates, so collect itemized quotes before budgeting.
How can I lower my ductwork installation cost?
Before replacing ducts, have a duct leakage test done ($150-$300) - if your system leaks less than 10% of total flow, sealing may be sufficient instead of replacement, saving thousands. Mastic sealant (not duct tape) on all joints costs $200-$400 and typically reduces leakage by 20-30%, improving both comfort and energy efficiency. This is one of the best HVAC investments available.
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