How much does ductwork replacement cost in Billings, MT?

Most Billings homeowners spend between $3,850 – $9,200 on ductwork replacement, with an average around $6,500. Local labor prices 2% above the national average, so Billings quotes tend to land at the higher end of national ranges.

Why is ductwork replacement more or less expensive in Billings than elsewhere?

Licensed trade labor in Billings runs about 102% of the national average, and the best crews book out fastest in spring and early summer. Montana weather drives material choices here, so ask contractors what they install most often in Billings and why.

Do I need a permit for ductwork replacement in Billings, Montana?

Most Billings, MT projects that change structure, electrical, plumbing or mechanical systems need a permit from the local building department; cosmetic work usually does not. Always confirm current requirements with the local building department before signing a contract, and make sure the permit is pulled by your licensed contractor.

How many quotes should I get in Billings?

Get at least three written quotes from licensed, insured Montana contractors. Comparing line items — not just the bottom line — is the fastest way to spot an inflated bid in the Billings metro market.

How much does ductwork replacement cost in 2026?

Most homeowners pay between $3,750 and $9,000, with a national average near $6,375. Small, simple jobs land at the low end; large or premium-material jobs run well above the high end.

What is the cost per linear foot?

Installed pricing usually runs $25.00 to $60.00 per linear foot, including labor and materials. Expensive metros can run 15–45% higher than that range.

What drives the price up the most?

Scope and access. Larger quantities lower your per-linear foot price, but difficult access, demolition of existing work, structural repairs found mid-job, premium materials and rush scheduling each add 8–30%.

Permits are typically required when the work changes structure or ties into electrical, plumbing, gas or mechanical systems. Budget $75–$600 in most cities and confirm whether your contractor pulls it — unpermitted work can block a future home sale.

How long does the job take?

Most residential projects of this type finish in one to five working days once materials are on site. Custom orders, inspections and weather are the usual causes of delay.

How many quotes should I get?

Three. Bids on the same scope commonly vary 20–40%, and the middle bid with the strongest warranty and references is usually the best value — the cheapest bid often excludes prep, disposal or permits.

Home/Cost guides/Ductwork Replacement/Billings, MT

Billings metro · Montana

Ductwork Replacement cost in Billings, MT

Billings homeowners typically pay $3,850 – $9,200 for ductwork replacement. Local labor and materials price 2% above the national average.

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Billings average

$6,500

Typical low

$3,850

Typical high

$9,200

Per linear foot

$26 – $61

Sample ZIP

What drives Billings pricing

Local labor

Licensed trade labor in Billings runs about 102% of the national average, and the best crews book out fastest in spring and early summer.

Permits & code

Most Billings, MT projects that change structure, electrical, plumbing or mechanical systems need a permit from the local building department; cosmetic work usually does not.

Climate & conditions

Montana weather drives material choices here, so ask contractors what they install most often in Billings and why.

Instant cost calculator

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Duct run (linear feet)150 linear feet

Quality / material level

Site access

Removal / prep work

Timing

Estimated project cost

$3,848 – $5,273

Most homeowners pay around $4,560

Compare quality / material level

Cost by material in Billings

Installed Billings pricing per linear foot.

Option	Installed cost	Pros	Cons
Flexible duct	$27 – $37	—	—
Sheet metal trunk and flex runs	$37 – $49	—	—
Insulated sheet metal	$49 – $63	—	—
Custom sealed metal with zoning	$63 – $87	—	—

Where the money goes in Billings

A typical $6,500 Billings project, broken down by line item.

Labor0.45% · $29
Materials0.38% · $25
Permits & inspections0.05% · $3
Overhead & profit0.12% · $8

Common add-ons

Extras that show up on Billings quotes but rarely in the headline price.

Duct sealing (Aeroseal)

$1,000 – $3,050

New returns

$305 – $1,200

Zoning dampers

$1,550 – $4,600

Asbestos duct wrap removal

$1,000 – $5,100

Ways to save in Billings

Replace ducts while the system is being replaced — one mobilization.
Seal instead of replace when ducts are intact but leaky.
Collect three written bids on an identical scope — spreads of 20–40% are normal.
Book in the off-season and stay flexible on the start date to save 5–15%.
Bundle nearby work into one mobilization so you only pay setup and travel once.
Ask what the contractor would change to cut 10% without hurting durability.

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More Billings research

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