HVAC Contractor Permit Requirements in Huntsville, AL

Complete permit and license guide for starting a hvac contractor in Huntsville, Madison County, Alabama.

Verified 2026-09-03 6 stops $400–$1,500 est. 4–10 weeks to obtain all licenses
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Not legal advice. Requirements may change — always verify with your local government authority before applying. Key agencies and fees on this page were re-checked against official government sources on .

Federal — start here

1 stop

  1. EIN (Employer Identification Number)

    Required if you have employees or operate as an LLC or corporation. Free from the IRS.

    Official government source

    FreeImmediate (online application)

State of Alabama

2 stops

  1. Alabama Department of Revenue - Sales Tax License

    Required for businesses making retail sales of tangible personal property in Alabama. Alabama sales tax is a privilege tax on retail sales; most services are not taxable, so service-only businesses may not need to register. Local city and county sales taxes are also due on top of the state rate and vary by jurisdiction - use ADOR's local tax rate lookup for your address. Register with the Alabama Department of Revenue via My Alabama Taxes (MAT); state and local returns are filed together through ONE SPOT.

    Official government source

    No registration fee is published by ADOR; registration is made through the My Alabama Taxes portalNot published by ADOR; confirm current processing time with the Department of Revenue

  2. EPA Section 608 Technician Certification (for refrigerant handling)

    Federal law under Clean Air Act Section 608 requires technicians who maintain, service, repair or dispose of equipment that could release ozone-depleting refrigerants to be certified, and prohibits knowingly venting refrigerants. Certification is by type: Type I (small appliances), Type II (high-pressure), Type III (low-pressure) and Universal, each requiring the Core section plus the type-specific section. Testing is conducted by EPA-approved certifying organizations, and certification does not expire.

    Official government source

    EPA does not set or publish an exam fee; each EPA-approved certifying organization sets its own price - confirm with the testing organization you useNot published by EPA; depends on the certifying organization's exam scheduling

City of Huntsville / Madison County

3 stops

  1. Alabama Licensing Board for General Contractors (Mechanical classification) - required only for projects $100,000 or more

    Alabama has no statewide HVAC-specific contractor license; the Alabama Electrical Contractors Board licenses only electrical contractors and journeyman electricians. HVAC/mechanical contractors bidding or performing work valued at $100,000 or more (labor plus materials) must be licensed by the Alabama Licensing Board for General Contractors under the Mechanical classification and pass the Business & Law exam. Below that threshold no state contractor license applies - only local business licensing and EPA Section 608 certification for refrigerant handling.

    Official government source

    $300 application fee for a prime contractor license (jobs $100,000+); no state contractor license fee below that thresholdThe General Contractors board reviews applications at quarterly meetings and requires a complete application on file roughly 30 days beforehand; there is no fixed week-count processing window

  2. City of Huntsville Finance Department, Revenue Division — Business License

    Huntsville requires a business license (privilege license tax) for all businesses within city limits. Most licenses are issued by the Finance Department's Revenue Division (256-427-5080); licenses for contractors, subcontractors and building permits are issued through the Inspection Division. The license tax is graduated by annual gross receipts under one of roughly 92 numbered category schedules in the city's License Fees by Schedule — for example Service schedule (77) minimum $35, Profession and vocation schedule (67) minimum $65, Contractor general building schedule (26) minimum $75, and Barbershop or beauty shop schedule (7) at $50 for the first chair/station plus $20 for each additional chair/station — rather than a single flat range. Must be renewed annually and displayed at your place of business.

    Official government source

    Graduated by gross receipts and business category (minimum tiers start at $35 and rise by schedule); see the city's License Fees by ScheduleNot published; confirm with the Revenue Division (256-427-5080)

  3. City of Huntsville Mechanical Permit (per project)

    A mechanical permit must be obtained from the City of Huntsville Inspection Office for each HVAC installation, replacement, or major repair. Trade permits (electrical, plumbing, mechanical, gas) are pulled by the licensed contractor, generally through the city's online trade-contractor permitting and inspection scheduling system. A final inspection is required upon completion.

    Official government source

    No mechanical permit fee is published; the city's permit-costs page gives formulas only for building permits - confirm the current trade permit fee with the Inspection Office (256-427-5331)Not published; confirm with the Inspection Office (256-427-5331)

Terminus

Open for business — est. $400–$1,500 · 4–10 weeks to obtain all licenses

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Official Sources

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