Quick Reference Table
Requirement | Details |
|---|---|
License Type | Mechanical (6) or Subclassification: Heat, Air Conditioning, Ventilation, Duct Work, and Refrigeration (6.1) |
Regulating Agency | Louisiana State Licensing Board for Contractors (LSLBC) |
Experience / Years | Not specified (focus on application & exam) |
Exam | Trade exam plus Business & Law course required (Administered by PSI Services LLC) |
Renewal | Annual (implied), $100 max statutory fee |
Continuing Education (CE) | Required only for residential (6 hours/year); none noted for commercial HVAC |
Fees | Exam fee: up to $50; License fee: up to $100; Renewal: up to $100; Late: up to $50; Out-of-state surcharge: up to $400 (as of July 2026) |
Official Links |
Who Needs a License in Louisiana?
Any contractor bidding or performing HVAC work worth more than $10,000 in Louisiana must hold an active HVAC or mechanical contractor license. This includes materials and labor combined. The law applies to both commercial and residential projects, except where specific exemptions exist for owner-builders on their primary residences.
According to the HVAC license requirements in Louisiana, the threshold for Mechanical or HVAC licensing is $10,000 total contract value, including all labor and materials. For general commercial projects, other license types apply above $50,000, but HVAC is always governed by the $10K rule for Mechanical classification. In addition, subcontractors supplying labor or materials must have the proper license if the specialization applies, except "labor-only" subcontractors, who require a separate subclass license if their work meets the value threshold.
Employees working under a licensed contractor do not need their own license. However, if you are self-employed or acting as a subcontractor, ownership structure and the contract value determine whether you must be licensed under Louisiana HVAC contractor rules. Any owner wishing to build their own primary residence does not need a license, but this exemption does not extend to investment or additional properties.
HVAC License Types
Louisiana offers several closely related license classifications relevant to HVAC contractors. Each license type provides distinct work scopes under the general umbrella of HVAC services.
Mechanical (Major Classification - Code 6)
The Mechanical classification covers the broadest range of work, including all manner of hydraulic, pneumatic, HVAC, and refrigeration systems. This credential allows a contractor to perform design, installation, repair, and maintenance across a range of mechanical systems, including but not limited to air conditioning and ventilation. The license covers work over $10,000 in value.
Heat, Air Conditioning, Ventilation, Duct Work, and Refrigeration (Subclassification 6.1)
This subclassification is more focused, applying specifically to services involving heating, air conditioning, ventilation, ductwork, and refrigeration. If your scope of work is limited to residential or light commercial HVAC, this may be the most relevant subclassification. Again, the $10,000 value threshold applies.
Labor Only (L.1) Subclassification
Contractors who perform only labor (without supplying materials) and whose scope exceeds the $10,000 threshold may apply for the Labor Only subclassification. This option does not require a trade exam but still holds the contractor to the same eligibility, net worth, and business law course requirements under the HVAC license requirements in Louisiana.
Each license type may be added or changed according to work needs. There are no planned combined classifications, but a contractor with an existing license may add the relevant HVAC subclassification through a separate process, including fees and documentation.
How to Get Licensed in Louisiana
The HVAC license requirements in Louisiana set a clear process for applicants. Follow these steps to secure your license.
Determine license type: Review project scope and confirm whether Mechanical (6), HVAC subclass (6.1), or Labor Only (L.1) applies based on the $10,000 value threshold.
Register your business: If you are not operating as a sole proprietor, register your LLC, corporation, or partnership with the Louisiana Secretary of State, and ensure your business charter is in good standing.
Begin your license application: Start a new application on the LSLBC Apply for a License portal. You will need to create an account and select the correct classification.
Designate your Qualifying Party: Identify the individual who will fulfill the Business & Law course and trade exam requirements. This is typically the owner, partner, or a senior employee.
Gather documentation: Prepare to upload required entity documents, a current financial statement showing at least $10,000 net worth, Social Security numbers for key individuals, and all contact information.
Submit your application: Upload all supporting documents and pay the appropriate fees (license, exam, processing) as prompted during the online process.
Obtain eligibility letter: Upon initial board review, you will receive a letter confirming exam eligibility. You must then schedule your exams with PSI Services LLC via their portal.
Pass the required exams: Both the Business & Law course and the specific trade exam (Mechanical/HVAC) must be successfully completed by the Qualifying Party.
Receive your license: Once all conditions are met, including passing scores and documentation, the board will issue your commercial or HVAC contractor license without delay.
Processing times depend on exam scheduling with PSI and applicant responsiveness, but licenses are issued as soon as all criteria are fulfilled.
Application Requirements
The LSLBC sets straightforward but firm application prerequisites for those seeking an HVAC contractor license.
Age and Citizenship
The HVAC license requirements in Louisiana do not specify age or citizenship criteria. Applicants should ensure all ownership information is accurate and verifiable, and that principal officers or partners are properly listed in documentation.
Experience Documentation
Unlike other states, Louisiana does not mandate a minimum number of years of hands-on HVAC experience. Proof of prior jobs or work history is not required for the commercial Mechanical or subclass HVAC application. Instead, applicants must demonstrate competency by passing the required examinations and meeting financial requirements.
Financial Statement and Net Worth
All applicants must upload a current financial statement prepared within the last 12 months. The statement must show a minimum net worth of $10,000. This financial requirement is strict. If there are liens or outstanding judgments, they must be resolved or properly disclosed, as the LSLBC will audit your financials during application review.
Bond and Insurance
A bond is not required for the commercial HVAC license. Likewise, general liability and workers' compensation insurance are not needed for commercial Mechanical/HVAC licensure in Louisiana. However, residential or mold remediation license classifications do require proof of insurance. Confirm your intended scope falls under the "no insurance required" rule before proceeding.
Background Review and Legal Standing
Applicants undergo a financial check for outstanding liens, litigation judgments, or bankruptcies. The board expects all legal issues to be either paid off or described and documented in the application. Fingerprinting, criminal background checks, or citizenship documents are not currently required for HVAC license applicants in Louisiana.
Additional Federal Certifications
There is no requirement for federal certifications (such as EPA Section 608) as part of the state HVAC contractor application. However, for refrigerant handling under federal law, you may need EPA certification independent of the LSLBC license. Always check with the EPA or your supplier for compliance if your scope includes refrigerants.
Exams
Passing the correct exams is mandatory for those seeking to meet the HVAC license requirements in Louisiana. All applicants must pass both the Business & Law course and the trade-specific exam for their classification.
Exam Types and Administration
The trade exam for Mechanical or the Heat, Air Conditioning, Ventilation, Duct Work, and Refrigeration subclassification evaluates knowledge relevant to HVAC work. Since August 5, 2025, LSLBC has contracted PSI Services LLC (PSI) to administer all licensing exams. Business & Law is a separate mandatory course and assessment. You cannot substitute work experience for this requirement.
Exam Format and Scheduling
Exam format (open or closed book, question count, time allowed) is detailed in the PSI Candidate Information Bulletin, which must be consulted for the most precise and current data. The LSLBC does not state passing scores or the retake policy directly – refer to PSI guidelines for these details. After LSLBC confirms eligibility, you schedule your exams through the PSI portal.
Retest and Waiver Information
If you do not pass on the first attempt, review the Candidate Information Bulletin for rules on retest intervals and fees. In rare cases (such as Labor Only subclass), an exam may not be required, subject to board review and a $150 research/waiver fee.
Fees
All fees for HVAC license requirements in Louisiana are set by statute and published by the LSLBC. However, statutory "up to" maximums apply. Always confirm current amounts at the LSLBC fee schedule.
Examination fee: Up to $50 (as of July 2026) – verify at LSLBC fee schedule.
License fee: Up to $100 (as of July 2026) – verify at LSLBC fee schedule.
Renewal fee: Up to $100 (as of July 2026) – verify at LSLBC fee schedule.
Delinquent (late) fee: Up to $50 (as of July 2026) – verify at LSLBC fee schedule.
Non-resident surcharge: Up to $400 (as of July 2026) – verify at LSLBC fee schedule.
Adding a classification: $95/year/classification, plus $40 processing, and $150 Business & Law fee (as of July 2026) – see official application.
Exam research/waiver fee: $150 (as of July 2026) for cases where no exam is required – verify at fee form.
PSI exam fees: Not published by LSLBC – verify at PSI scheduling link or by contacting PSI.
Fees may be paid online during application, with certain amounts payable directly to PSI for exam scheduling. Always retain payment confirmations for your records.
Renewal and Continuing Education
Louisiana HVAC contractor licenses are renewed on an annual basis, based on statutory authority and the LSLBC schedule. For Mechanical/HVAC license types, there is currently no required continuing education unless you also hold a residential classification.
Renewal Process
You must renew your HVAC contractor license via the LSLBC For Contractors portal. Submit your renewal application and pay fees before the license expiration date to avoid a delinquent penalty. The renewal fee is up to $100, with late renewals costing an additional $50, as of July 2026. Deadlines are not specified on the LSLBC site, so it’s essential to monitor your expiration closely.
Continuing Education
Continuing education (six hours per year) is required only for residential and home improvement license holders. Commercial Mechanical or HVAC subclass licensees are exempt from continuing education under current LSLBC rules. Residential applicants should reference the LSLBC for approved course providers and topics.
Lapse and Reinstatement
If your license expires, you can generally renew within 12 months by paying the renewal and delinquent fees. If more than a year lapses, consult the LSLBC to determine if re-application is required or if reinstatement is available for your license type.
Reciprocity
The LSLBC grants reciprocal licensing pathways to applicants currently licensed in certain other states. However, the list of reciprocal states changes and is not published on the LSLBC’s public pages as of July 2026. Always verify with the board before applying under reciprocity provisions.
If you believe you are eligible, the process is as follows: file a Reciprocity Request form with your completed license application, and have your current licensing board in the reciprocal state complete and send a verification of your license. The LSLBC will review the form and verify status before issuing a Louisiana license or exam waiver, as permitted by agreements in place.
If your state is not reciprocally recognized, you must complete the full application, exam, and Business & Law course process according to HVAC license requirements in Louisiana.
