How much does ductwork replacement cost in Colorado?

Ductwork Replacement in Colorado typically costs $2,800 to $13,300, with most homeowners paying around $6,000.

Colorado · HVAC

Ductwork Replacement cost in Colorado

Statewide pricing, permit posture and inspection sequence for ductwork replacement in Colorado. Your city or county issues the actual permit — use the local links below to confirm fees.

Model reviewed August 2026

Ductwork Replacement cost in Colorado

$2,800 – $13,300

Most Colorado homeowners pay around $6,000, or $300–$650 per supply run. Permit fees typically add $90–$320.

Permit: Yes. Code adoption is local — local adoption of the irc; no statewide residential code outside the wildfire code.

Cost breakdown

Budget scope	$2,800
Typical project	$6,000
Premium / complex	$13,300
per supply run	$300 – $650
Permit fees	$90 – $320
vs national baseline	+10%
Timeline	1-3 days of work, 1-3 weeks including permitting

What is different about ductwork replacement in Colorado

Altitude-rated combustion appliances, snow-load roof framing and expanding wildfire-hardening requirements in the foothills all raise scope versus the plains.

Owner-builder: Owner-builder permits widely available with an affidavit. 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

Ductwork pricing by city

Ductwork cost in Denver$2,900 – $13,800 Ductwork cost in Colorado Springs$2,600 – $12,500 Ductwork cost in Aurora$2,900 – $13,800 Ductwork cost in Fort Collins$2,800 – $13,500 Ductwork cost in Lakewood$2,800 – $13,500 Ductwork cost in Thornton$2,800 – $13,300 Ductwork cost in Arvada$2,800 – $13,300 Ductwork cost in Westminster$2,800 – $13,300 Ductwork cost in Pueblo$2,800 – $13,300 Ductwork cost in Boulder$2,800 – $13,300 Ductwork cost in Greeley$2,800 – $13,300

Permit difficulty by city

Hometriva Permit Complexity Index: review load, added discipline reviews, wind and flood overlays, and how each jurisdiction sets fees.

City	Complexity	Review time	Inspections
Denver	60/100 · Complex	5–19 days	4
Colorado Springs	60/100 · Complex	5–19 days	4
Aurora	76/100 · Very complex	6–24 days	4
Fort Collins	73/100 · Complex	6–23 days	4
Lakewood	73/100 · Complex	6–23 days	4
Thornton	73/100 · Complex	6–23 days	4
Arvada	73/100 · Complex	6–23 days	4
Westminster	73/100 · Complex	6–23 days	4
Pueblo	73/100 · Complex	6–23 days	4
Boulder	73/100 · Complex	6–23 days	4
Greeley	73/100 · Complex	6–23 days	4

What Colorado homeowners reported paying

Invoice amounts submitted for this state, shown beside the model.

Rebates and incentives in Colorado

What is still claimable, what expired, and where to check your own utility territory.

State home energy rebate programs (HEAR / HOMES)Varies by program

Federally funded, state-administered rebates for heat pumps, panel and wiring upgrades, insulation and whole-home retrofits. Availability, income tiers and funding depend entirely on the state program and can pause when a state's allocation runs out.

U.S. DOE — Home Energy Rebates

DSIRE — every Colorado incentive by ZIPThe N.C. Clean Energy Technology Center database. The authoritative list of state, utility and local programs.
ENERGY STAR rebate finderUtility and manufacturer rebates by ZIP code for HVAC, water heating and appliances.
DOE Home Energy Rebates — Colorado statusShows whether the state's HEAR/HOMES program is open, waitlisted or not yet launched.

Frequently asked questions

Do I need a permit for ductwork replacement in Colorado?

In most jurisdictions this work is permitted and inspected. Requirements are set locally, so confirm the current application and inspection checklist with your building department before work starts.

How long does ductwork replacement take?

1-3 days of work, 1-3 weeks including permitting. Permit review and inspection scheduling are usually the largest source of variation.

What changes the price the most?

The largest cost drivers are number of supply and return runs; flex duct versus rigid sheet metal; attic access and clearance.

Sources

Sources & verification

Model vintage August 2026. The links above are the issuing agencies' own pages — we publish them so you can confirm the current rule yourself, not as evidence that each fact on this page was re-checked with them today. Cost figures are modeled estimates based on national baselines adjusted for local labor and material pricing, not quotes. Permit rules change; confirm with the building department before starting work.