HVAC Ductwork Pricing: Cost per Foot and Quote Checklist
Ductwork pricing depends on the length and size of the ducts, material, access, fittings, returns, and work included. Angi's August 2026 guide reports $10-$25 per linear foot including removal and installation. Treat that as a published budgeting reference, not a fixed local rate or a complete whole-home quote. Define the job scope before comparing totals.
A published starting point for ductwork replacement is $10-$25 per linear foot including removal and installation, according to Angi’s August 2026 cost guide. A complete quote still needs to specify which ducts are being replaced, their sizes and materials, access conditions, and everything included in the work.
For contractors, the useful estimating question is what it will take to deliver the documented scope. For homeowners comparing bids, it is whether the contractors are pricing the same job.
Ductwork cost per linear foot versus total project cost
Angi reports an average of $1,250 and a typical range of $452-$2,181 from 3,970 verified projects. Those are its reported project figures, checked for this guide on October 5, 2026. They should not be treated as a guaranteed price for replacing every duct in a particular home.
| Pricing measure | What it helps you understand | What it does not settle |
|---|---|---|
| Material price per foot | Cost of a specified duct product and size | Installed labor, fittings, access, or removal |
| Installed price per foot | A budgeting reference for a defined run | Whether the quote includes returns, plenums, insulation, or finishing |
| Partial replacement total | Work on the named sections | The cost of replacing the rest of the system |
| Whole-system quote | The contractor’s stated complete scope | Anything excluded or left as an allowance |
Do not multiply a rate by the home’s square footage. Floor area and duct length are different measurements. Even a measured linear-foot allowance needs the duct diameter, routing, and fittings to be useful.
An illustrative calculation is 100 linear feet at an assumed installed allowance of $20 per foot, or $2,000. That only prices the scope covered by that allowance. It is not a quote for a complete home, and additional work must not be counted twice if it is already included.
Material choices to define on the estimate
An estimate that says only “replace ductwork” leaves too much open. Identify the material and size of the trunks, branches, returns, and transitions separately.
| Duct material or format | Detail to specify | Estimating question |
|---|---|---|
| Rigid sheet metal | Size, shape, fittings, joints, and insulation | Which pieces require fabrication or difficult connections? |
| Flexible duct | Size, route, support, and insulation | Can the proposed route be installed without avoidable bends or compression? |
| Fiberglass duct board | Dimensions, construction, sealing, and insulation properties | What fabrication and site protection are included? |
| Exposed spiral or rectangular metal | Visible layout, finish, hangers, and transitions | What appearance and finishing work has the homeowner approved? |
Use the designer’s requirements and current supplier quotes for the actual job. This guide does not assign a universal installed price to each material: a simple accessible run and a custom installation can have very different labor and fabrication requirements.
What changes exposed ductwork cost?
For exposed ducts, ask the contractor to separate the functional design from the visible finish. The quote should identify the proposed layout, duct shape, joint appearance, hangers, paint or coating, and how transitions connect to the equipment and room outlets.
Exposed access may simplify some work, while custom fabrication or finish expectations add work elsewhere. Avoid assuming that leaving ducts visible always makes the installation cheaper or more expensive.
Ask to see the proposed route before accepting the estimate. Resolve ceiling clearances, visible supports, and finishing responsibilities in writing. If fabric ductwork is being considered, request a separate system design and supplier quote; a residential metal-duct allowance is not a reliable substitute.
A complete ductwork installation quote checklist
Use this checklist for a new installation, partial replacement, or complete redesign. Mark each item included, excluded, or subject to a stated allowance.
| Quote item | What to document |
|---|---|
| Project boundary | Which existing sections remain and which are removed |
| Design | Calculations, layout, sizes, and who prepares or reviews them |
| Supply ducts | Lengths, sizes, materials, fittings, and outlets |
| Return ducts | Return paths, sizes, grilles, and any proposed changes |
| Equipment connections | Plenums, transitions, and other specified connections |
| Access | Attic or crawl-space conditions, access openings, and working route |
| Removal | Disposal and any work that requires a separate specialist |
| Sealing and insulation | Materials and scope required by the design and applicable rules |
| Finishing | Drywall, carpentry, painting, and who is responsible |
| Permits and testing | Local submission requirements and stated completion checks |
| Commercial terms | Price, payment terms, warranty, exclusions, and change-order process |
A reusable HVAC quote template can keep these fields in the estimate. Walk the proposed installation route before fixing the price, and record inaccessible areas that still need inspection.
Manual D and the design behind the price
ACCA’s Manual D provides a method for residential duct design. Copying the old duct sizes or selecting them solely by the size of the equipment does not document that design work.
Confirm the loads, selected equipment, distribution requirements, and relevant existing-system findings with the designer. Record the supply and return changes included in the proposal. Our Manual J software comparison explains the different roles of load calculation, equipment selection, and duct design.
Ask the local authority what documentation and inspections the project requires. Do not promise that every replacement needs the same permit package or that buying a software report automatically satisfies local requirements.
Repair, seal, or replace?
A replacement quote should explain why the proposed work is needed. ENERGY STAR’s duct-sealing guidance describes how leaking connections and poorly sealed ducts can affect comfort and efficiency. That makes inspection and sealing worth discussing, but it does not establish a fixed savings percentage or payback period for an individual home.
Ask the contractor to distinguish among:
- Repairing or reconnecting specific damaged sections.
- Sealing and insulating retained ductwork where appropriate.
- Replacing identified branches, trunks, or returns.
- Redesigning and replacing the distribution system.
These are different scopes. A full replacement should follow the findings and design, rather than appear automatically as the premium option in every equipment proposal.
Compare contractor bids on the same scope
Start by checking that each quote covers the same sections and deliverables. Then compare materials, sizes, design work, access, finishing, testing, and warranty. Ask for clarification when one contractor lists an item as included and another leaves it unstated.
For HVAC businesses, use the sales process checklist to explain the findings and record the homeowner’s questions. Give the installer the same scope and access notes used to create the estimate.
After completion, compare estimated and actual material, labor, subcontractor, and return-visit costs. Feed those results into your HVAC pricing process so future allowances reflect the work your shop performs locally.
Common ductwork pricing questions
Does the cost per foot include labor?
Only if the source or quote says it does. The Angi reference at the start of this guide includes removal and installation. A supplier’s duct price or material allowance can exclude both. Ask for the inclusion list before comparing rates.
Can I price a full replacement from the home’s square footage?
Square footage can provide context, but a quote needs the actual distribution layout, duct sizes, materials, access, and project scope. Two homes of similar floor area can require different work.
Should ductwork be replaced with every new HVAC system?
Inspect and evaluate it as part of the project. Retaining, repairing, or replacing ducts should follow their condition and the proposed system design. Ask for the findings behind the recommendation and a written scope for any changes.
Written by
PipelineOn Research Team