Our research found no statewide Mississippi license for individual HVAC technicians: the Mississippi State Board of Contractors (MSBOC) licenses contractor businesses instead, each through a qualifying party.
Getting licensed in Mississippi therefore means working for, or becoming, an MSBOC-licensed contractor: a commercial Mechanical classification or HVAC specialty for commercial jobs over $50,000, a Residential HVAC or Residential Mechanical license for residential subcontracting, PSI exams and annual renewal.
Work on a refrigerant circuit adds the federal EPA 608 certification on top.
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At a glance
None for individual technicians in our research.
The HVAC credential our research found is MSBOC's contractor license for businesses.
The Mississippi State Board of Contractors (MSBOC); our research found no state board that licenses individual HVAC technicians.
Commercial: the Mechanical major classification or the Heat, Ventilation, A/C β HVAC specialty (plus separate ductwork and refrigeration specialties).
Residential: Residential HVAC or Residential Mechanical.
Not established in our research β MSBOC's pages we read set financial, insurance and exam requirements for the business, and we found no worker-level hour or training rule.
Ask MSBOC.
For contractor applicants: the Mississippi Law and Business Management exam plus the required trade exam, all administered by PSI and open book.
Every 12 months, with late renewal possible up to 180 days after expiry.
Residential qualifying parties complete 2 CE hours from a board-approved provider; our research found none for commercial.
Exam waivers only: Tennessee's license waives the Mechanical and Plumbing exams; Alabama (through its GC board) and Louisiana exam scores can waive HVAC; Ohio can waive HVAC, plumbing and refrigeration.
The Mississippi Business and Law exam is always required.
MSBOC links to a consolidated license search at search.msboc.us, under Check A License.
Our research did not verify the search itself.
The MSBOC residential classification for installation, maintenance and repair of residential HVAC systems; subcontractors doing residential HVAC work on a residential construction or improvement project must hold it or Residential Mechanical.
The residential classification MSBOC lists for both mechanical trades, so one license covers a business doing residential HVAC and plumbing subcontracting.
MSBOC's commercial HVAC specialty, test required, for contractors whose commercial work is HVAC only; commercial jobs over $50,000 require a commercial license.
The commercial major class covering heating, cooling, refrigeration, ductwork and plumbing; HVAC-only contractors can hold the HVAC specialty instead of this class.
Not for the technician: our research found no statewide Mississippi license for individual HVAC technicians.
The Mississippi State Board of Contractors licenses contractor businesses, commercial and residential, and its classification list shows contractor classifications only.
What Mississippi does require is a license for the business on the work MSBOC covers.
All contractors and subcontractors on commercial jobs over $50,000, including equipment installation, need an MSBOC commercial license, and subcontractors doing residential HVAC or mechanical work on a residential construction or improvement project must be licensed by MSBOC too.
Refrigerant work adds the federal layer: under the EPA 608 rule, anyone who could reasonably be expected to violate the integrity of a refrigerant circuit while maintaining, servicing, repairing or disposing of appliances containing CFC, HCFC or non-exempt substitute refrigerants must pass an exam from an EPA-approved technician certification program.
βMSBOC regulates commercial and residential contractors who bid on or perform work in Mississippi.β
MSBOC's classifications are the levels, and each is held by a contractor business.
On the commercial side, the Mechanical major classification covers heating, cooling, refrigeration, ductwork and plumbing, while HVAC-only contractors can hold the Heat, Ventilation, A/C β HVAC specialty instead; separate ductwork and refrigeration specialties also exist, each test required.
On the residential side, a subcontractor doing residential HVAC work on a residential construction or improvement project must hold Residential HVAC, or Residential Mechanical, which covers both mechanical trades.
Every licensed business works through a qualifying party β an owner, officer or responsible managing employee β and one person can qualify at most 3 companies at once, though a 4th needs the Board's special approval.
There is no journeyman rung on this ladder: MSBOC's classification list shows contractor classifications only, and the guide sites that advertise a Mississippi journeyman HVAC license or state exam are not supported by MSBOC's own list.
Because the state credential belongs to the business, the requirements on the MSBOC licensing pages we read are financial and exam-based: our research found no worker-level hour total or training rule attached to any Mississippi HVAC credential.
A commercial application costs $400 and a residential application $50.
Commercial applicants need a CPA-reviewed financial statement showing net worth of at least $50,000 for a major classification or $20,000 for a specialty, and general liability insurance of at least $300,000 per occurrence or $600,000 aggregate; residential applicants show proof of coverage, for which MSBOC sets no minimum amount.
Each business's qualifying party must be an owner, officer or responsible managing employee.
Confirm the current fees and paperwork with MSBOC before you apply.
βFor commercial applications the fee is $400.00. Residential applications require a $50.00 fee.β
PSI administers all MSBOC exams, and they are open book.
Every MSBOC applicant must pass the Mississippi Law and Business Management exam plus any required trade exam, so an applicant for a test-required classification such as the HVAC specialty sits both.
MSBOC's NASCLA exam acceptance covers commercial general building and master electrical only β not the mechanical, HVAC or plumbing trade exams.
What the HVAC trade exam itself covers, our research does not describe; MSBOC's exam information and PSI candidate materials are the place to check before you book.
βAll exams are administered by PSI and are open book.β
MSBOC licenses renew on a one-year cycle: residential licenses and commercial certificates of responsibility must be renewed every 12 months.
A late renewal is possible up to 180 days after expiry; after that, a new application is required.
Continuing education reaches the qualifier, not every worker: each qualifying party for a residential license must complete 2 credit hours of continuing education from a board-approved provider, under Miss.
Code Ann. Β§73-59-11.
Our research found no CE requirement for commercial licenses, and MSBOC's pages do not state whether the residential CE runs per year or per renewal, so confirm with the board.
βEach qualifying party for a residential license must complete two (2) credit hours of continuing educationβ
Only as exam waivers.
MSBOC reciprocity waives trade exams only, and the Mississippi Business and Law exam is always required.
For the mechanical trades, MSBOC's reciprocity page lists a short set of waivers: Tennessee's license waives Mississippi's Mechanical and Plumbing exams; Alabama, through its general contractor board, and Louisiana exam scores can waive the HVAC exam; and Ohio can waive HVAC, plumbing and refrigeration.
A worker-side license does not transfer at all, because our research found no statewide Mississippi technician license to transfer.
If you hold an HVAC license from another state, ask MSBOC which of your exams, if any, it will waive before you apply.
MSBOC links to a consolidated license search at search.msboc.us from its home page, under Check A License.
Our research confirmed the link but did not open the search itself, so if a lookup does not return the record you expect, contact the board through msboc.us.
Check a license before you hire a contractor β or before you go to work for one β because the license belongs to the business, and each MSBOC license works through a qualifying party.
Our research did not verify city-level HVAC licensing in Mississippi, including in Jackson, Gulfport, Hattiesburg and Southaven, so treat it as an open question rather than a cleared one.
A city or county that requires its own registration or license for mechanical work makes that local rule the one that binds the job.
Check with the building or licensing department where the work will be done before you bid.
This page summarizes the Mississippi board pages, statutes, rules and other sources listed below, as read for this state-by-state HVAC licensing series, current as of September 2026.
It is not a substitute for the instructions the Mississippi State Board of Contractors (MSBOC) publishes.
For the rest of the picture in Mississippi, see plumbing licensing in Mississippi, HVAC apprenticeships in Mississippi, HVAC contractor licensing in Mississippi, and hvac technician pay in Mississippi.
Not at the technician level in our research: Mississippi's contractor licensing board, MSBOC, licenses contractor businesses, and its classification list shows contractor classifications only.
The business license is required on commercial jobs over $50,000, including equipment installation, and for subcontractors doing residential HVAC work on residential projects.
Individual technicians add the federal EPA 608 certification for maintaining, servicing, repairing or disposing of appliances containing CFC, HCFC or non-exempt substitute refrigerants.
Not on MSBOC's list.
The board's classification list shows contractor classifications only, so the guide sites that advertise a Mississippi journeyman HVAC license or state exam are not supported by MSBOC's own materials.
If a job posting asks for a Mississippi journeyman HVAC license, ask the employer which MSBOC classification, federal EPA 608 certification or other credential they mean before you apply.
The application is $400 for a commercial MSBOC license and $50 for a residential one.
Commercial applicants also need a CPA-reviewed financial statement showing net worth of at least $50,000 for a major classification or $20,000 for a specialty, plus general liability insurance of at least $300,000 per occurrence or $600,000 aggregate; residential applicants show proof of coverage, with no minimum amount set.
Licenses then renew every 12 months.
For refrigerant work, yes.
Under the EPA 608 rule, anyone who could reasonably be expected to violate the integrity of a refrigerant circuit while maintaining, servicing, repairing or disposing of appliances containing CFC, HCFC or non-exempt substitute refrigerants must pass an exam from an EPA-approved technician certification program.
It is a federal certification, separate from Mississippi's contractor licensing.
Sources
Sourced from the documents listed above.
Verified September 2026.
This is career information, not legal advice.
Confirm current rules with the Mississippi State Board of Contractors (MSBOC).