Typical installed ductwork pricing varies by material, length, insulation, and labor. This cost guide compares metal duct and flex duct price ranges buyers usually pay and the main drivers that change the final cost.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Residential Metal Duct (installed) | $800 | $2,200 | $5,000 | Assumptions: 800-1,200 sq ft home, standard sheet metal, moderate access. |
| Residential Flex Duct (installed) | $400 | $1,100 | $2,500 | Assumptions: 800-1,200 sq ft home, insulated flex, standard runs. |
| Per Linear Foot (metal) | $6 per lf | $12 per lf | $25 per lf | |
| Per Linear Foot (flex) | $2 per lf | $5 per lf | $9 per lf |
Content Navigation
- Typical Installed Cost For Metal Ductwork vs Flex Duct
- Material, Labor, Equipment, Disposal, and Overhead in Typical Duct Quotes
- How Duct Size, Run Length, Insulation, and Access Change Prices
- Practical Ways To Lower Metal Or Flex Duct Install Costs
- Installation Time, Crew Size, And Typical Hourly Rates That Affect Price
- Regional Price Differences And Climate Effects On Duct Pricing
- When Repairing Ducts Costs Less Than Replacing Them
Typical Installed Cost For Metal Ductwork vs Flex Duct
Most homeowners pay $800-$5,000 for a metal duct installation and $400-$2,500 for flex duct, with average totals near $2,200 and $1,100 respectively. Expect flex duct to be 30%-60% cheaper in materials and often faster to install on simple runs.
Assumptions: single-story 800-1,200 sq ft home, 6-10 supply/return runs, standard round or rectangular metal vs insulated flex.
Material, Labor, Equipment, Disposal, and Overhead in Typical Duct Quotes
| Component | Metal Duct | Flex Duct | Notes |
|---|---|---|---|
| Materials | $300-$1,800 | $120-$700 | Sheet metal, fittings vs insulated flex hose, collars. |
| Labor | $400-$2,000 | $200-$900 | Typical rates $75-$125 per hour. |
| Equipment | $50-$300 | $20-$150 | Crimpers, shears, vacuum, lifts for high runs. |
| Delivery/Disposal | $50-$300 | $25-$150 | Old duct removal increases cost. |
| Overhead & Taxes | 8%-15% of job | 8%-15% of job | Includes permit fees if required. |
Material and labor are the largest line items: metal duct materials and shop labor push costs higher, while flex reduces both.
How Duct Size, Run Length, Insulation, and Access Change Prices
Longer runs and larger diameters increase price nonlinearly: runs over 50 linear feet typically add $1.50-$4 per extra foot for metal and $0.75-$2 per foot for flex. Runs longer than 100 lf or diameters above 12″ often require larger crews, adding $200-$800 in labor.
Insulation grade matters: R4-R6 pre-insulated flex vs adding insulation to metal costs $0.50-$3 per sq ft extra. Tight attic or crawlspace access can add 2-3 hours to a job or $150-$400 in labor.
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Practical Ways To Lower Metal Or Flex Duct Install Costs
Control scope by limiting new runs, reusing existing trunk lines, and choosing thinner-gauge metal or standard insulated flex. Bundling HVAC services (air handler, thermostat, duct sealing) with one contractor often yields a 5%-15% package discount.
Prepare the site: clear attic/crawlspace access, label supply locations, and remove obstructions to save 1-4 labor hours. Accepting standard fittings over custom boxed transitions reduces material premiums.
Installation Time, Crew Size, And Typical Hourly Rates That Affect Price
Small residential duct installs usually take 6-12 hours with a 1-2 person crew; metal systems often require 10-24 hours with a 2-3 person crew. Expect contractor hourly rates of $75-$125 per hour and union labor in metro areas at the top of that range.
Sample timing: flex-only retrofit for a 1,000 sq ft house: 6-10 hours, 1-2 techs. Metal trunk-and-branch for same home: 12-20 hours, 2-3 techs.
Regional Price Differences And Climate Effects On Duct Pricing
Urban markets in the Northeast and West Coast typically run 10%-25% higher than Midwest and Southeast markets due to labor and overhead. Cold-climate insulation upgrades (R8 or higher) add $200-$800 compared with basic R4 installs.
Rural jobs may incur travel minimums ($75-$250) or longer lead times that increase labor totals; tight city permits can also add $100-$600 in fees or delays.
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When Repairing Ducts Costs Less Than Replacing Them
Minor leaks, disconnected flex runs, or local damaged sections are often repaired for $75-$600 depending on access and parts. Full replacement only becomes cost-effective when repairs exceed 50%-60% of replacement cost or when mold/deterioration is widespread.
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.
| Example | Repair Range | Replacement Range |
|---|---|---|
| Seal leaks and reattach flex | $75-$300 | $400-$1,100 |
| Replace 40 lf of trunk (metal) | $200-$700 (patches) | $1,000-$3,000 |