Tennessee · DVI
Dryer Vent Installation Certification in Tennessee
Earn your Dryer Vent Installation (DVI) certification online with NISCR's self-paced program and receive a same-day certificate when you pass. As Tennessee's housing market grows and homeowners upgrade or reroute venting for safety and efficiency, proper dryer vent installation is a valuable skill, and this credential shows you understand code-compliant routing, materials, and airflow that reduce fire risk.
100% online & self-paced — your certificate the same day, anywhere in Tennessee.
- Self-paced
- Instant certificate
- 2-year validity
Licensing
Do you need a license in Tennessee?
Dryer vent installation can be more regulated than cleaning in Tennessee because it may involve penetrating walls or roofs and tying into a structure's mechanical systems. Depending on scope, this work can fall under contractor or mechanical code requirements, and Tennessee contractor licensing can apply once a project reaches the $25,000 threshold; a Home Improvement license may apply to smaller residential jobs in certain counties. A local business license generally applies as well. Your NISCR certificate is a professional credential, not a government license. Always verify current contractor and mechanical-code requirements with the Tennessee Board for Licensing Contractors and your local building authority before performing regulated work.
A NISCR Certificate of Completion confirms completion of NISCR training and examination. It is a professional credential, not a government license. Where local law requires a license to perform a service, the technician is responsible for obtaining it.
Local demand
The dryer vent installation market in Tennessee
Tennessee's strong new-home construction across Nashville's suburbs, Clarksville, and Chattanooga creates ongoing need for properly installed dryer vents, while owners of older Memphis and Knoxville homes often need vents rerouted or brought up to code. Because improper venting is a documented fire hazard and humidity makes correct airflow critical, code-compliant installation is a meaningful, in-demand service.
Earning potential
What dryer vent installation pros earn in Tennessee
Dryer vent installers in Tennessee may see illustrative earnings around $17 to $29 per hour, with those holding relevant contractor or mechanical credentials and serving new-construction accounts often earning more. These figures are illustrative and not guaranteed; actual pay depends on licensing, scope, employer, and local demand.
Per installation
$150–500
Bundled with a cleaning
$250–700
New-construction rough-in (per unit)
$200–450
Illustrative ranges — actual earnings vary by location, effort, and experience, and are not guaranteed.
Curriculum
What you’ll learn
- Calculate maximum allowable duct length and deduct equivalent length for each elbow to keep runs within code.
- Select and join rigid metal duct, transition duct, and connectors that meet UL 2158A and manufacturer specifications.
- Reroute existing flex or non-compliant runs to a shorter, straighter path that improves airflow and drying time.
- Install a code-compliant exterior termination with a backdraft damper and no screen to prevent lint buildup and pest entry.
- Seal joints with foil tape or approved fasteners while avoiding sheet-metal screws that snag lint inside the duct.
- Maintain required clearances and proper slope when running duct through walls, ceilings, attics, and crawlspaces.
The process
How it works
Enroll & pay
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Complete the course + short quiz
Self-paced lessons, then a short quiz — 75% to pass, unlimited retries.
Download your certificate
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Questions
Dryer Vent Installation certification in Tennessee — FAQ
- Do I need a license to install dryer vents in Tennessee?
- Installation can fall under contractor or mechanical code requirements depending on scope, and a Tennessee contractor license can apply once a project reaches $25,000, with a possible Home Improvement license for smaller residential jobs in certain counties. A local business license generally applies. Verify with the Tennessee Board for Licensing Contractors and your local building authority.
- Is there demand for dryer vent installation in Tennessee?
- Yes. A robust new-construction market plus older homes needing vents rerouted or brought to code, combined with fire-safety and humidity concerns, all support steady demand.