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Ductwork Installation Cost Calculator
This free ductwork installation cost calculator gives you a planning estimate for installing new ducts in a home, a finished basement, an addition or a converted space. Choose a full-home system, a partial area or an addition, then set the home size, duct material, insulation level and where the ducts will run. You will see a cost breakdown with Budget, Standard and Premium project levels in about two minutes.
✓ Free Planning Estimate ✓ Detailed Cost Breakdown ✓ Budget / Standard / Premium
Estimate My Ductwork Installation Cost
Calculator 069 of 401 · HVAC · Ductwork Installation
Calculator Introduction
Answer a few quick questions about your ductwork installation and the calculator estimates your cost in four steps: Location & Project Type, Size & Materials, Duct Location & Options and Labor Market & Timing. A ZIP code is required so we can match your request with local licensed professionals. It does not change the price. Only the questions that matter for your project are shown, and every setting has a sensible default, so you can get a first estimate in under a minute and then fine-tune.
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Request Quotes From Licensed HVAC Contractors
Use the estimate above as your planning budget, then request quotes from licensed HVAC contractors using the form below the calculator. A floor plan, photos of the attic, basement or crawl space and the model of your equipment help contractors quote more accurately.
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How to Read Your Results
Your result shows an Estimated Project Budget, which is the Standard estimate, together with a typical range from Budget to Premium. Below the headline number you will see a category breakdown, a line-item table for all three project levels, and a tip based on your selections. Results update automatically if you change an input after calculating.
Budget
Budget assumes basic duct materials and lean labor.
Standard — plan around this
Standard assumes quality duct and fittings, careful sealing and a licensed installer at typical rates. This is the best number to plan around.
Premium
Premium assumes higher-grade duct and fittings, thorough sealing and premium service.
What Is Included in Each Cost Category
The breakdown only shows categories that apply to your project, so you will not see empty $0 rows.
Materials
Duct, fittings, plenums, registers and grilles, insulation, sealing materials and any options you select.
Labor
Installer time for layout, hanging, connecting, sealing and testing the ducts.
Disposal
Debris haul-away, when selected.
Permit / Inspection
An optional allowance only. Real fees are set by your city or county.
Additional Costs
An urgent or after-hours service premium, when selected.
Not included
HVAC equipment, drywall repair, painting and other finish work are not included.
Planning estimate only: This calculator provides a planning estimate only. It is not a quote, bid or guaranteed price. Actual contractor pricing may vary based on location, site conditions, material choice, labor market and project complexity. Permit amounts shown are allowances, not municipal fees. HVAC equipment, drywall repair, painting and other finish work are not included.
How Much Does Ductwork Installation Cost?
Ductwork installation typically costs about $9,300 at the Standard level for a full new system in a 2,000 to 2,500 square foot, one-story home, and about $5,900 to $15,200 across the Budget to Premium range. A partial install or an addition costs less, because it ducts only part of the home.
This calculator uses the following planning figures for a mixed flex-and-metal system with R-6 insulation, open attic or basement runs, a permit allowance, debris haul-away and an average labor market:
| Project | Budget | Standard | Premium |
|---|---|---|---|
| Full new duct system (2,000 to 2,500 sq ft) | $5,860 | $9,320 | $15,205 |
| Partial area (about 900 sq ft) | $2,915 | $4,695 | $7,705 |
| Addition (medium) | $2,760 | $4,430 | $7,250 |
Change any input and the numbers update, because the calculator prices duct materials, registers and plenums, sealing, labor and permit separately.
How This Ductwork Installation Calculator Works
01 · Choose the project
Pick a full home, a partial area or an addition.
02 · Choose the size
For a full system, select your home size and number of stories. For a partial area or an addition, select the size of the area.
03 · Choose materials and location
Select the duct material, the insulation level and where the ducts will run.
04 · Pick options
Select any extras you want, such as air balancing or zoning.
05 · Set your labor market and timing
Choose the market that matches your area and whether the work is urgent. The calculator then prices materials and labor at planning rates and shows three project levels. Your ZIP code is used to match your request with local HVAC contractors. It does not change the price.
What Affects Ductwork Installation Costs?
Project type
A full new system ducts the whole home from a central plenum, with supply branches and return paths. A partial install ducts one area, such as a finished basement or an attic room, and connects to an existing system. An addition covers new space and ties into the home’s system or a new indoor unit.
Home size and number of stories
Larger homes need more duct, more registers and more labor. At the Standard level, a full system costs about $4,695 for a home up to 1,000 square feet, about $5,895 for 1,000 to 1,500 square feet, about $9,320 for 2,000 to 2,500 square feet, about $11,880 for 2,500 to 3,500 square feet and about $15,300 for a home over 3,500 square feet. A two-story home raises the 2,000 to 2,500 square foot estimate to about $9,705, and a three-story home raises it to about $10,120, because the trunk lines run farther.
Duct material
The default is a mixed system, with metal trunks and flexible branches. An all-flex system is about $8,530 at the Standard level. An all-metal system is about $11,355. Flex is quick to install and costs less. Metal has smoother walls, holds up better and is quieter.
Insulation level
The default is R-6 insulated duct, which meets many codes. R-8 insulated duct raises the Standard full-system estimate to about $9,690. Higher R-values matter most for ducts in an unconditioned attic or crawl space.
Where the ducts run
Open attic and basement runs are the default. Ducts in a crawl space take more time and raise the Standard full-system estimate to about $10,265. Ducts in an attic raise it to about $9,890. Ducts that must be fished through finished walls and ceilings take the most time, and the Standard estimate rises to about $11,600.
Options
Options include air balancing, extra duct sealing, zoning dampers, a media filter cabinet, a fresh-air intake and sound-reducing duct liner. Air balancing raises the Standard full-system estimate to about $9,695. A zoning system raises it to about $11,035. Options appear only when they apply.
Permits
Many cities require a permit and an inspection for new ductwork. The calculator includes a permit allowance of about $200 at the Standard level by default. If you remove it, the Standard full-system estimate falls to about $9,120. The allowance is a planning placeholder, not the municipal fee.
Urgency
Urgent and after-hours calls carry a premium. The calculator adds 15% to labor for work within about 48 hours and 40% for emergencies. An emergency install raises the Standard full-system estimate from about $9,320 to about $11,180.
Budget vs Standard vs Premium Ductwork Installation
The three project levels reflect real differences, not a simple multiplier. Use Standard as your main planning number, and the Budget-to-Premium range to see how much your choices can swing the result.
Budget
Basic duct materials, a leaner labor rate and fewer labor hours.
Standard
Quality duct and fittings, careful sealing and a licensed installer at typical rates.
Premium
Higher-grade duct and fittings, more thorough sealing and testing and premium service rates.
Ductwork Design Matters
A duct system is only as good as its design. A load calculation sets the airflow each room needs, and the duct sizes follow from that. Undersized ducts cause noise and weak airflow, and leaky ducts waste a large share of the air you pay to heat and cool. Ask for sealing with mastic and a test of the finished system, not just a visual check.
Regional Pricing Differences
HVAC labor rates and permit practices vary across the country. Rather than guess from your ZIP code, the calculator lets you choose a labor market, from lower-cost areas to the highest-cost metro areas, and applies it to labor. A highest-cost market raises the Standard full-system estimate from about $9,320 to about $11,175. Materials are not adjusted.
DIY vs Hiring a Licensed HVAC Contractor
Running a short branch of flex duct is within reach of some homeowners, but a full system is not a typical DIY project. Duct sizing, sealing and the connection to the equipment all affect comfort and efficiency, and many areas require a licensed contractor and a permit. A poor design is hard to fix once the walls are closed.
Questions to Ask HVAC Contractors
- Did you size the ducts with a load calculation and a duct design?
- Which duct material and insulation level are in the quote?
- How will you seal the joints, and will the system be tested?
- Where will the ducts run, and what will you open or cut to get there?
- Does the quote include registers, returns, the permit and haul-away?
- Is the existing equipment big enough for the new ducts?
How to Avoid Unexpected Ductwork Costs
- Plan the duct routes with the installer before the quote, so everyone prices the same layout.
- Ask for a written scope that lists the materials, the sealing method and the permit.
- Check the equipment. New ducts on an undersized system will not fix comfort.
- Ask about drywall repair. Finish work is not part of this estimate.
- Avoid emergency calls when you can plan the work.
Ready for a Real Quote?
Use the estimate above as your planning budget, then request quotes from licensed HVAC contractors using the form below the calculator. A floor plan, photos of the attic, basement or crawl space and the model of your equipment help contractors quote more accurately.
Quick Answers About Ductwork Installation Costs
How much does ductwork installation cost?
Ductwork installation commonly costs about $9,300 at the Standard level for a full new system in a 2,000 to 2,500 square foot, one-story home, and about $5,900 to $15,200 across the Budget to Premium range.
What is ductwork?
Ductwork is the system of metal or flexible tubes that carries heated or cooled air from a furnace, air conditioner or heat pump to the rooms of a home, and returns air back to the equipment.
Is flex duct or metal duct better?
Flex duct costs less and installs faster. Metal duct costs more but has smoother walls, lasts longer and is quieter. Many systems use metal trunks with flexible branches.
How much does it cost to duct an addition?
In this calculator, ducting a medium addition costs about $4,430 at the Standard level, with a range of about $2,760 to $7,250 across the Budget to Premium levels.
What is the biggest cost driver in ductwork installation?
The size of the area is the biggest driver, followed by duct material, where the ducts run and whether the work is a full system, a partial area or an addition.
Ductwork Installation Cost FAQs
How much does ductwork installation cost?
In this calculator, a Standard estimate for a full new duct system in a 2,000 to 2,500 square foot, one-story home is about $9,320, with a Budget to Premium range of roughly $5,860 to $15,205. The estimate assumes a mixed flex-and-metal system, R-6 insulation, open attic or basement runs and a permit allowance.
How much does it cost to add ductwork to part of a house?
A partial install covers a finished basement, an attic room or one floor. At the Standard level, a medium area of about 900 square feet costs about $4,695, with a small 400 square foot area about $2,985 and a large 1,500 square foot area about $6,750.
How much does ductwork for an addition cost?
Ducting a new addition costs about $4,430 at the Standard level for a medium addition, about $2,650 for a small one and about $6,570 for a large one. The estimate assumes the new ducts connect to a system that already has the capacity.
How much does ductwork cost for a larger home or a home with more floors?
Size and stories both raise the price. At the Standard level, a full system runs from about $4,695 for a home up to 1,000 square feet to about $11,880 for 2,500 to 3,500 square feet and about $15,300 for a home over 3,500 square feet. A two-story home is about $9,705 and a three-story home about $10,120 for the 2,000 to 2,500 square foot size.
Is flex duct or metal duct cheaper to install?
Flex duct is cheaper. At the Standard level, an all-flex full system is about $8,530, the default mixed system about $9,320 and an all-metal system about $11,355. Metal lasts longer and moves air with less friction, while flex installs faster and costs less.
Does the location of the ducts change the price?
Yes. Open attic and basement runs are the default. Crawl spaces take more time, and ducts inside finished walls take the most. At the Standard level, a full system is about $9,890 with attic runs, about $10,265 in a crawl space and about $11,600 when the ducts must be fished through finished spaces.
Do I need a permit to install ductwork?
Many cities require a permit and an inspection for new ductwork, mainly for a full system. The calculator includes an allowance of about $200 at the Standard level, and removing it lowers a full-system estimate to about $9,120. Real fees are set by your city or county.
Does a ductwork install include a new furnace or air conditioner?
The equipment is not included. This calculator prices the ducts, registers, plenums, insulation and sealing. A new furnace, air conditioner or heat pump is priced separately, and a new system is sized to the ducts. Use the related HVAC calculators to price the equipment.
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This calculator provides a planning estimate only. It is not a quote, bid or guaranteed price. Actual contractor pricing may vary based on location, site conditions, material choice, labor market and project complexity. Permit amounts shown are allowances, not municipal fees. HVAC equipment, drywall repair, painting and other finish work are not included.