Dryer vent installation: cost, code rules, who to call
A new dryer vent through an exterior wall costs $200 to $800 and replacing existing ductwork costs $100 to $300, according to HomeGuide. The code wants a 4-inch smooth metal duct, no longer than 35 feet minus an allowance for each elbow, ending outside with a backdraft damper and no screen. HomeGuide says HVAC technicians, plumbers and appliance technicians install dryer vents, and that a new vent takes 2 to 4 hours.
The short version
- New vent through a wall: $200 to $800. Replacing old ductwork: $100 to $300 (HomeGuide).
- Installed by length: $10 to $20 per foot (HomeGuide).
- Material: smooth metal, 4 inches; the hose behind the dryer listed, 8 feet or less (IRC M1502.4.1, M1502.4.3).
- Length: 35 feet minus elbows, or the dryer maker's rating (IRC M1502.4.6).
- Indoor venting: not allowed for a vented dryer; only listed condensing (ductless) dryers are exempt (IRC M1502.2).
Dryer vent installation cost
| Job | HomeGuide |
|---|---|
| New vent through an exterior wall, including cutting the hole | $200 to $800 |
| Replacing existing ductwork in the same place | $100 to $300 |
| Duct and materials for a replacement | $30 to $100 |
| Labor for a replacement | $70 to $200 |
| Replacing the outside vent cover | $50 to $100 |
| Rerouting or new installation (price list) | $200 to $500 |
HomeGuide says costs rise for a vent under a deck or through a soffit, ducts run through floor joists, crawl spaces or basements, cutting through brick or stone instead of vinyl or wood siding, and complex runs with many elbows. A replacement is quicker: HomeGuide says professionals can replace an existing vent in one hour in most cases (see dryer vent replacement).
Replacing an existing dryer vent
Swapping an old hose, duct or outside vent cover for a new one is covered on our dryer vent replacement page: what it costs, which parts the code lets you use, and the steps for the hose and the outside vent.
Who installs dryer vents?
HomeGuide says HVAC technicians, plumbers and appliance technicians install dryer vents, and suggests getting quotes from at least three companies. One credential to ask about is the Chimney Safety Institute of America's Certified Dryer Exhaust Technician (C-DET) program. HomeGuide says a new vent where none existed takes 2 to 4 hours, longer when a hole has to be cut through brick or stone. Some cities require a permit: the City of Las Vegas homeowner guide, for example, lists installing dryer exhausts among the jobs that need one (see dryer vent cleaning in Las Vegas). Ask your installer, or your city's permit office, before the work starts.
Use the form below and we will send your request to a company that serves your ZIP code. For repairs to an existing vent, see dryer vent repair.
Dryer vent installation: common questions
How much does it cost to install a dryer vent?
Do you have to vent an electric dryer?
Is an indoor dryer vent safe?
How often should dryer vents be replaced?
How long can a dryer vent be?
Sources
- HomeGuide, dryer vent installation cost, page dated January 5, 2026: homeguide.com
- HomeGuide, dryer vent cleaning cost, page dated April 29, 2024: homeguide.com
- Fixr, dryer vent cleaning cost, updated January 31, 2025: fixr.com
- International Code Council, 2021 International Residential Code, section M1502: codes.iccsafe.org
- Whirlpool, "Dryer venting specifications" (W11688180A): whirlpool.com
- U.S. Fire Administration, "Clothes Dryer Fires in Residential Buildings (2008 to 2010)", August 2012: usfa.fema.gov
- Chimney Safety Institute of America, Certified Dryer Exhaust Technician: csia.org
- City of Las Vegas Building & Safety, "When Do I Need a Permit? A Homeowner's Guide": files.lasvegasnevada.gov