Wisconsin · HVAC
Ductwork Replacement cost in Wisconsin
Statewide pricing, permit posture and inspection sequence for ductwork replacement in Wisconsin. Your city or county issues the actual permit — use the local links below to confirm fees.
Verified August 2026
Ductwork Replacement cost in Wisconsin
$2,500 – $11,800
Most Wisconsin homeowners pay around $5,300, or $250–$600 per supply run. Permit fees typically add $85–$295.
Permit: Yes. Wisconsin Uniform Dwelling Code (SPS 320-325)
Cost breakdown
| Budget scope | $2,500 |
|---|---|
| Typical project | $5,300 |
| Premium / complex | $11,800 |
| per supply run | $250 – $600 |
| Permit fees | $85 – $295 |
| vs national baseline | -2% |
| Timeline | 1-3 days of work, 1-3 weeks including permitting |
What is different about ductwork replacement in Wisconsin
The Uniform Dwelling Code applies statewide to one- and two-family homes and includes its own inspection and certification structure separate from the IRC.
Owner-builder: Homeowner permits allowed on owner-occupied property with a UDC exemption. Ductwork Replacement generally requires a licensed contractor to pull the permit, even where owner-builder status is available.
Inspections
- Duct rough-in
- Duct leakage test
- Final mechanical inspection
What drives the price
- Number of supply and return runs
- Flex duct versus rigid sheet metal
- Attic access and clearance
- Return air sizing corrections
- Removal of contaminated duct board
Frequently asked questions
Does duct replacement need a permit in Florida?
Yes. Replacing a duct system requires a mechanical permit and a duct leakage test in most Florida jurisdictions, because duct leakage is regulated under the energy code.
Sources
Sources & verification
Last verified August 2026. Cost figures are modeled estimates based on national baselines adjusted for local labor and material pricing — they are not quotes. Permit rules change; confirm with the building department before starting work.