Homeowners replacing HVAC ductwork typically pay between $1,500 and $12,000 depending on home size, duct type, and access. This article focuses on ductwork replacement cost and the main drivers: linear feet, material (flex vs. sheet metal), insulation, and labor access.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Full duct replacement (1,200–1,800 sq ft) | $1,500 | $4,500 | $9,500 | Assumptions: suburban home, mix of flex and metal, standard registers. |
| Per linear foot (installed) | $4 per lf | $8 per lf | $15 per lf | Assumptions: includes materials + labor. |
| Trunk-only replacement (attic/garage) | $600 | $2,200 | $5,000 | Assumptions: limited branch runs, easy access. |
| Air sealing & duct insulation | $200 | $750 | $2,500 | Assumptions: whole-house sealing and insulation upgrades. |
Content Navigation
- Typical Total Cost For Replacing Ductwork In A 1,200–2,000 Sq Ft House
- Line-Item Price Breakdown: Materials, Labor, Equipment, Permits, Disposal
- How Accessibility, Linear Feet, And Number Of Runs Change The Final Quote
- Material Choices That Shift Pricing: Flex Duct, Sheet Metal, And Fiberglass Board
- Practical Ways To Reduce Duct Replacement Price Without Sacrificing Function
- Regional Price Differences And How They Affect Quotes
- Real-World Quote Examples With Specs, Hours, And Totals
- Additional Charges, Add-Ons, And Typical Job Duration
Typical Total Cost For Replacing Ductwork In A 1,200–2,000 Sq Ft House
Most homeowners replacing all ducts in a 1,200–2,000 sq ft house should budget $3,000-$7,000 on average.
Low-end jobs ($1,500-$3,000) assume mostly flex ducts, few runs, and attic access. Average jobs ($3,000-$7,000) use mixed spiral metal trunks and insulated flex branches in attics or crawlspaces. High-end jobs ($7,000-$12,000+) include full metal fabrication, multiple levels, and extensive register relocation. Assumptions: Midwest labor rates, typical single-family layout.
Line-Item Price Breakdown: Materials, Labor, Equipment, Permits, Disposal
Breaking a quote into clear parts helps compare bids and spot markups.
| Materials | Labor | Equipment | Permits | Delivery/Disposal |
|---|---|---|---|---|
| $500-$3,000 (flex, spiral, fittings) | $75-$125 per hour; $800-$4,000 total | $100-$600 (lift rental, duct machine) | $0-$400 (local) | $50-$600 (haul & dump fees) |
How Accessibility, Linear Feet, And Number Of Runs Change The Final Quote
Access drives labor: attic/crawlspace access vs. in-wall chase can double or triple labor hours.
Key numeric thresholds: jobs <100 lf often cost $4-$8 per lf; 100–400 lf average $6-$10 per lf; >400 lf may reach $8-$15 per lf due to complexity. Another driver: more than 12 supply/return registers typically adds $50-$150 per register for new booting and collar work.
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Material Choices That Shift Pricing: Flex Duct, Sheet Metal, And Fiberglass Board
Material selection changes both upfront price and long-term performance.
Flex duct: $4-$9 per lf installed, fastest to install but higher friction losses. Sheet metal (round/spiral): $8-$20 per lf installed, better durability and airflow. Fiberglass board and lined duct: $12-$25 per lf installed, used for custom plenums or noise control. Assumptions: standard R-6 insulation where applicable.
Practical Ways To Reduce Duct Replacement Price Without Sacrificing Function
Control scope: prioritize trunk repairs and sealing rather than full system replacement when possible.
Cost-saving actions: patch and seal leaks ($200-$750), replace only damaged trunk sections ($600-$2,500), choose insulated flex for branch runs, schedule work in shoulder seasons for lower labor rates, and get 3 written quotes. Avoid unnecessary register relocation and cosmetic drywall repairs when budgeting.
Regional Price Differences And How They Affect Quotes
Duct replacement costs vary by region: expect 10%-30% higher rates in coastal and urban markets.
Typical deltas: Midwest baseline; West Coast +15%-30%; Northeast +10%-25%; Sunbelt (South) -5% to +5% depending on metro. Labor rate examples: $75-$95 per hour rural/suburb, $95-$125 per hour metro. Assumptions: similar material choices and job complexity across regions.
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Real-World Quote Examples With Specs, Hours, And Totals
Concrete examples show how scope and access produce very different totals.
| Scenario | Specs | Labor Hours | Per-Unit Rates | Total |
|---|---|---|---|---|
| Small ranch attic repair | 120 lf flex, 6 registers, sealing | 10 hours | $6 per lf | $900-$1,300 |
| Whole-house replacement, 1,600 sq ft | 350 lf mixed trunks/branches, 14 registers | 30-45 hours | $8-$10 per lf | $3,500-$6,500 |
| Multi-level home, in-wall runs | 500 lf sheet metal, custom plenums | 60-90 hours | $12-$15 per lf | $7,000-$12,500 |
Additional Charges, Add-Ons, And Typical Job Duration
Expect extra fees for access work, insulation upgrades, and register relocation.
Common add-ons: insulation R-8 upgrades ($400-$1,200), HVAC balancing ($200-$600), register replacement $25-$100 each, mold/contamination remediation $500-$4,000. Typical job duration: 1 day for small repairs, 1–5 days for full replacement depending on crew size and access.
Tips for Getting the Best HVAC Prices
- Prioritize Quality Over Cost
The most critical factor in any HVAC project is the quality of the installation. Don’t compromise on contractor expertise just to save money. - Check for Rebates
Always research current rebates and incentives — they can significantly reduce your overall cost. - Compare Multiple Quotes
Request at least three estimates before making your choice. You can click here to get three free quotes from local professionals. These quotes include available rebates and tax credits and automatically exclude unqualified contractors. - Negotiate Smartly
Once you've chosen a contractor, use the proven strategies from our guide — How Homeowners Can Negotiate with HVAC Dealers — to get the best possible final price.