Kentucky · HVAC licensing · official-source guide
Kentucky licenses HVAC contractors at the state level through the Department of Housing, Buildings and Construction, Division of Heating, Ventilation and Air Conditioning, under KRS 198B.650 to 198B.689. Contractors need a Master HVAC Contractor or Journeyman HVAC Mechanic license, plus a state or local permit for new installations, since Kentucky runs a statewide HVAC permitting and inspection program.
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Kentucky licenses heating, ventilation and air conditioning contractors at the state level. The authority is the Department of Housing, Buildings and Construction (HBC), through its Division of Heating, Ventilation and Air Conditioning. The division administers KRS 198B.650 to 198B.689, the statutes that created HVAC licensure in the Commonwealth. Heating and air conditioning contractors have been required to hold a license from the Division of HVAC since July 1995. On Jan. 1, 2011, Kentucky became the first state to run a statewide HVAC permitting and inspections program covering both residential and commercial construction, a step beyond licensure alone. The division states that Kentucky is one of 35 states with a licensing program specific to the HVAC trade. HBC also licenses or certifies plumbers, electricians, boiler contractors, sprinkler and fire alarm contractors, and building inspectors, each through its own division, but HVAC is administered separately under its own chapter of statute. The department promulgates administrative regulations under KRS Chapter 13A to administer, coordinate and enforce the HVAC statutes, to conduct examinations, to maintain the list of licensees and certificate holders, and to register apprentices. The Division of HVAC can be reached at 502-573-0395 or hvac@ky.gov, and the department's licensing section, which handles application processing across HBC's trades, can be reached at 502-573-2002. The division's office is at 500 Mero Street, Frankfort, Kentucky 40601. Because HVAC contracting can affect life safety through combustion equipment, ductwork and refrigerant handling, the department treats it as a regulated trade requiring examination, insurance and ongoing oversight rather than simple business registration.
Kentucky's HVAC law creates three levels of authorization. The Master HVAC Contractor license is the top credential. A master contractor supervises and is primarily responsible for all HVAC work performed by the employees and subcontractors of the licensee or the company the licensee represents, and is the only person eligible to obtain HVAC permits and to be primarily responsible for HVAC work. The Journeyman HVAC Mechanic license authorizes an individual to perform HVAC work, but only under the supervision, direction and responsibility of a master contractor; a journeyman must be physically on site when supervising an apprentice and must otherwise work under the master's general direction. The Apprentice HVAC Mechanic certificate is issued to a person still learning the trade who assists, and works under, a master contractor and a journeyman mechanic; apprentices register rather than sit for a licensing exam, by filing an Apprentice HVAC Registration Form (Form HVAC 3) with a recent photo and the supervising master contractor's signature and license number, at no fee to the apprentice. Statute defines an air conditioning or cooling system, a heating system, a hydronic system and burner service separately, so the license covers heating, cooling, ventilation, hydronic and burner work as one combined trade rather than splitting them into separate credentials. No person may claim to be, or advertise as, a master contractor, journeyman mechanic or apprentice mechanic, or use a title or abbreviation implying that status, without holding the corresponding license or certificate. A company may have its license represented by an employee who holds the master license; if that employee leaves or the company name changes, the company must notify the department in writing and request a change of information.
Sourcesapps.legislature.ky.gov 1apps.legislature.ky.gov 2apps.legislature.ky.gov 3apps.legislature.ky.gov 4
Anyone who practices heating, ventilation and air conditioning contracting in Kentucty, including obtaining HVAC permits, must hold a Master HVAC Contractor license. Employees who perform installation, maintenance or repair work under a master contractor's supervision, and whose work goes beyond simple assistance, must hold a Journeyman HVAC Mechanic license. A person still gaining the required experience works as a registered apprentice under both a journeyman and a master contractor. The law does not require a license for every person who touches HVAC equipment. Subordinate employees of a licensed master contractor who are not themselves journeymen or apprentices, and who do not independently engage in HVAC contracting, are not required to be separately licensed. A property owner may do HVAC work on property the owner occupies without a license. A full-time maintenance person or maintenance engineer performing routine maintenance for an employer, not exceeding major repairs, is exempt. Anyone who installs, services or replaces residential window air conditioning units is exempt, as is anyone doing only electrical work on an HVAC system. General retailers whose primary business is not HVAC contracting may sell and arrange installation without a license of their own, provided they use only licensed subcontractors; the retailer is not, however, relieved of liability or of the insurance requirement if it is itself performing HVAC contracting. A full exemption list appears later in this page. The practical rule for a contracting business is that the business needs a master license to hold permits and take responsibility for jobs, and needs journeyman or apprentice licensure for every technician who performs HVAC work in the field.
To qualify for a Master HVAC Contractor license, an applicant must be at least 18, be a U.S. citizen or a resident alien authorized to work in the United States, and show at least two years of qualifying experience. That experience can be two years as a journeyman HVAC mechanic under the direction of a master contractor, two years practicing as a master contractor or equivalent in Kentucky or another jurisdiction, or two years licensed and employed as a mechanical engineer in Kentucky or elsewhere. A Journeyman HVAC Mechanic applicant must also be at least 18 and a citizen or authorized resident alien, and must show two years of HVAC trade experience, either under a master contractor's direction or performing HVAC work in Kentucky or another jurisdiction. Kentucky counts one year of qualifying experience as a minimum of 1,500 hours of HVAC work within a continuous 12-month period. Proof of experience can come from a W-2, an affidavit from the supervising master contractor, an out-of-state license or its equivalent, verifiable documentation of HVAC work performed where no license is required, or a Department of Defense DD 214 form. One academic year of a department-approved HVAC curriculum, or one year of professional HVAC training, can count as one year of the journeyman experience requirement, up to one year. One academic year of teaching in an approved technical education program in HVAC can likewise count as one year toward either the master or journeyman experience requirement, also capped at one year. Military training and experience can satisfy these same requirements where it is equivalent.
Sourcesapps.legislature.ky.gov 1apps.legislature.ky.gov 2apps.legislature.ky.gov 3
Kentucky requires both master and journeyman applicants to pass a written examination before licensure. The Master HVAC Contractor exam tests knowledge of codes, standards, and current technological and industry recommended practices for installing, maintaining, repairing, remodeling or altering HVAC systems, plus the law and regulations governing the HVAC business. The Journeyman HVAC Mechanic exam tests the same codes, standards and practices for installation, maintenance, repair, remodeling and alteration, without the business-law component. A journeyman applicant who has already passed the master exam may apply that score to satisfy the journeyman exam requirement, and a valid master exam score can also stand in directly for the master requirement. Except in cases where the department accepts an alternate, equivalent exam, an applicant must score at least 70 percent to pass. The department gives HVAC exams at least twice a year at times and places it sets within the Commonwealth. To register, an applicant submits an HVAC Examination Registration Form (Form HVAC-4), a recent passport-sized color photograph, and a nonrefundable examination fee, which is 150 dollars for the master exam and 50 dollars for the journeyman exam. An applicant cannot sit for the exam until that fee is paid. If an applicant does not complete a scheduled exam within one year of the first notice of examination, the application is voided. A passing score stays valid for three years. An applicant who fails may retake the exam by paying the exam fee again, without resubmitting the other application materials. The department must provide reasonable accommodations for disabled applicants on request, and will recognize an outside testing agency's or national code group's exam as equivalent if it covers the same material at the same level.
Kentucky's HVAC fees are set by administrative regulation under 815 KAR 8:010. The initial license application fee for a Master HVAC Contractor is 250 dollars for a 12-month license; for a Journeyman HVAC Mechanic it is 50 dollars for a 12-month license. Initial license fees can be prorated for a partial term of not less than seven and not more than 18 months, since every license expires on the final day of the applicant's birth month regardless of when it was issued. The examination fee is 150 dollars for the master exam and 50 dollars for the journeyman exam, and is separate from the application fee. Annual renewal costs 250 dollars for a master license and 50 dollars for a journeyman license. A handful of special service fees apply beyond those base charges. Restoring an expired license during the 60-day grace period costs 125 dollars for a master license and 25 dollars for a journeyman license, added to the renewal fee. Placing a license into inactive status costs 20 dollars, and reactivating an inactive license also costs 20 dollars, plus that year's renewal fee and proof of continuing education. Reinstating a license that has fully terminated costs 250 dollars for a master license and 50 dollars for a journeyman license for each 12-month period, or part of a period, since termination, capped at 750 dollars for a master license and 150 dollars for a journeyman license. Apprentice registration and renewal carry no fee at all. All fees and charges the department collects under the HVAC statutes go into a trust and agency account in the State Treasury, and the department's HVAC program expenses are paid out of that same account, subject to the department's approval, rather than from the state's general fund.
Kentucky ties HVAC licensure to a minimum insurance requirement rather than to a surety bond. No person, firm or corporation may practice HVAC contracting in Kentucky without maintaining general liability insurance of at least 500,000 dollars and property damage insurance of at least 300,000 dollars, underwritten by a carrier licensed and approved by the Kentucky Department of Insurance. Proof of that insurance must be submitted to the Division of HVAC before a license is issued or renewed, and a license is not valid without it. Because state law occupies this field, proof of the state-required insurance exempts a licensee from having to carry separate insurance to satisfy any local jurisdiction's own licensing rules. Insurance carriers are required to notify the department if they cancel the coverage of a licensee who is required to carry it, which gives the department an independent check on whether a master contractor's insurance stays in force between renewals. A master contractor whose license is placed in inactive status is not required to maintain the insurance while inactive, since an inactive license cannot be used to perform HVAC work; performing HVAC work on an inactive license is itself grounds for revocation or suspension of every HVAC license or certificate the person holds. The insurance requirement applies specifically to the master contractor level, since the master contractor is the person legally responsible for the work performed under the license. Kentucky's HVAC statutes do not require a surety bond from HVAC contractors at any license level; the insurance minimums above are the only financial-responsibility requirement the state statute and its implementing regulation impose.
Every Kentucky HVAC license is an annual license that must be renewed on or before the last day of the licensee's birth month, on payment of the renewal fee. Failure to renew causes the license to expire. A 60-day grace period follows expiration, during which the former licensee may keep practicing while applying to restore the license by paying the renewal fee plus a restoration fee, and by providing current proof of the insurance a master contractor must carry. If the license is not restored within that 60-day window, it terminates immediately, and the former licensee cannot legally practice in Kentucky again until every applicable licensing requirement is satisfied. Within three years of termination, a former licensee can apply for reinstatement by paying the renewal fee plus the reinstatement fee, without retaking the exam. After three years, a former licensee must meet every requirement that applies to a brand-new applicant, exam included. A licensee not actively working in HVAC in Kentucky may ask the department to place the license on inactive status, which is exempt from annual renewal and, for a master contractor, from the insurance requirement while inactive; reactivating it requires that year's renewal fee, a reactivation fee, and current continuing education. Continuing education itself is required before every renewal, under a department-wide rule that also covers HVAC. The default minimum is six hours of approved continuing education per 12-month renewal cycle, and HVAC licensees are not among the trades the regulation carves out for a different hour count, so the six-hour default applies to both master and journeyman licensees. Course content must relate to business, job safety, codes relating to HVAC, or subject matter directly related to the HVAC trade. Hours earned above the annual requirement carry forward up to two years, capped at 12 carried-forward hours, and no more than two hours per year of safety-practices training counts toward the total. A licensee's first renewal is exempt from the requirement if the initial license was issued within 12 months of that renewal. Renewal, restoration, reinstatement or reactivation can each be denied for an unpaid fee, missing continuing education, or, for a master contractor, a missing current insurance certificate.
Sourcesapps.legislature.ky.gov 1apps.legislature.ky.gov 2apps.legislature.ky.gov 3apps.legislature.ky.gov 4
Kentucky allows reciprocal licensure for an HVAC contractor already licensed in another state. Under KRS 198B.666, a person holding a license from a state with licensing, education and experience requirements substantially equal to or greater than Kentucky's, and whose home state grants equivalent licensing privileges to Kentucky licensees in return, may be issued an equivalent Kentucky license on terms the department sets. In practice, that reciprocity runs through a specific reciprocity agreement between Kentucky and the applicant's home state, and an applicant must comply with whatever terms that agreement establishes. Beyond the agreement itself, a reciprocity applicant for a Master HVAC Contractor license must still meet the same filing requirements as a new master applicant, including the application, fee, proof of experience and proof of insurance, and a reciprocity applicant for a Journeyman HVAC Mechanic license must meet the same filing requirements as a new journeyman applicant. An applicant seeking both licenses through reciprocity must submit a separate application and pay a separate application fee for each. Reciprocity does not automatically waive Kentucky's exam requirement; whether an out-of-state exam is accepted as equivalent is a separate determination the department makes if a testing agency, national code group, or the applicant demonstrates the outside exam covers the same material at the same level of knowledge as Kentucky's own exam. Because reciprocity depends on a bilateral agreement and on the department's case-by-case review of an applicant's home-state requirements, a contractor moving into Kentucky should contact the Division of HVAC directly to confirm whether their home state currently qualifies before relying on reciprocity rather than the standard licensing path.
Kentucky treats unlicensed HVAC contracting as a criminal offense, not just a civil violation. Under KRS 198B.686, any person for whom HVAC licensure or certification is required, who is not licensed or certified by the department and who practices HVAC contracting services, is guilty of a Class A misdemeanor, and each separate instance of unlicensed practice is treated as its own separate offense. Anyone who advertises or otherwise holds himself out as a licensed master or journeyman HVAC contractor without actually holding that license is likewise guilty of a Class A misdemeanor, again with each violation counted separately. Separately from the criminal penalty, KRS 198B.672 lets the department impose administrative sanctions on an existing licensee or certificate holder after a hearing conducted under KRS Chapter 13B. Grounds for sanction include fraud or deceit in obtaining a license or certificate, transferring a license's authority to another person, unfair or deceptive trade practices, willful disregard of building or electrical codes, aiding or helping another person evade the HVAC licensing law, allowing a license to be used by more than one person, which the statute treats as evidence of intent to evade the law, willful disregard of a disciplinary action, negligence or incompetence in meeting applicable codes, any violation of the HVAC statutes or their regulations, and certain criminal convictions. Available sanctions include revocation, suspension, probation, restriction, refusal to issue or renew, reprimand, censure or a fine. The department must notify local building officials and permit offices within 30 days of taking any such sanction, and a revoked, suspended, restricted, lapsed or voluntarily surrendered license does not stop the department from investigating past wrongdoing or pursuing discipline.
Sourcesapps.legislature.ky.gov 1apps.legislature.ky.gov 2apps.legislature.ky.gov 3
Kentucky restricts who can claim HVAC contractor status in advertising and requires a licensed contractor to display proof of licensure on the job. Under KRS 198B.670, no person may advertise as, or claim to be, a master heating, ventilation and air conditioning contractor unless licensed by the department, and the license number must appear in all of that contractor's advertising and on all vehicles the contractor uses for HVAC contracting work. KRS 198B.656 extends the same restriction to the journeyman and apprentice titles: no one may claim to be, advertise as, or use a title, designation or abbreviation suggesting master, journeyman or apprentice HVAC status without holding the corresponding license or certificate. The HVAC installation permit requirements reinforce this at the job-site level. Under KRS 198B.6671, the permit for an initial HVAC system installation must display the master license number when the work is required to be performed by a master HVAC contractor, along with the name of the person performing the work, the scope of work, and the property owner's name and address. The statutes do not set out a separate civil fine amount specifically for omitting the license number from an ad or a vehicle; instead, advertising or claiming master, journeyman or apprentice status without the license exposes the advertiser to the same Class A misdemeanor penalty that applies to unlicensed practice under KRS 198B.686, and a licensed contractor who violates the display rule can also face the administrative sanctions available under KRS 198B.672, including a fine, reprimand, suspension or revocation, after a hearing.
Sourcesapps.legislature.ky.gov 1apps.legislature.ky.gov 2apps.legislature.ky.gov 3apps.legislature.ky.gov 4apps.legislature.ky.gov 5
Beyond the contractor's own license, Kentucky requires a permit for most new HVAC installations. Under KRS 198B.6671, anyone installing an initial heating, ventilation or air conditioning system must apply for a permit before beginning the installation, and by applying, the applicant consents to inspection of the work by the Commonwealth's authorized inspectors and by the relevant city, county, urban-county, charter county, unified local or consolidated local government. The permit application and the permit itself must show the name of the person doing the work, the full scope of the work, the property owner's name, and the property's location, including county and street address, plus the master license number when the work legally requires a master contractor. Kentucky exempts several situations from the permit requirement: installations on manufactured homes performed by a licensed manufactured home retailer or manufacturer, window unit air conditioners, space heaters, and any HVAC installation outside a building designed for human occupancy. The Division of HVAC, or an authorized local government under KRS 198B.6673, sets a schedule of permit and inspection fees that cannot exceed the actual cost of running the program, and establishes inspection protocols meant to keep inspections timely and minimize interruption to construction. A person performing local HVAC inspections must have at least six years of experience as a licensed journeyman or master HVAC contractor, or be a certified building inspector who has passed the HVAC-related examinations, and must be licensed or certified in HVAC within 12 months of being hired. Local governments running an authorized HVAC program may not add extra permitting or inspection requirements beyond what existed before Jan. 1, 2007, and a permit issued by an authorized local government counts as if it were issued directly by the department.
Sourcesapps.legislature.ky.gov 1apps.legislature.ky.gov 2apps.legislature.ky.gov 3
Kentucky runs most HVAC permitting and inspection through the state Division of HVAC, but the law lets local governments that already had their own HVAC program running as of Jan. 1, 2007 keep operating it under a contract with the department. The Division of HVAC's own materials list 17 local programs statewide that have been granted this local HVAC jurisdiction; anyone with a concern in one of those areas is directed to contact the local program rather than the state division. Kentucky's two largest metro areas both fall under local jurisdiction. Louisville and Jefferson County run their own HVAC permitting program, reachable at 502-574-3321, alongside a separate program for the City of Jeffersontown within the county. Lexington and Fayette County likewise run their own HVAC program, administered through the city's permitting staff. Other local programs cover Boone, Campbell and Kenton counties in Northern Kentucky, including the City of Newport, Bullitt County, Barren County, Madison County and the City of Richmond, Owensboro, Whitesville and Daviess County, and Madisonville and Hopkins County. A locally authorized program must employ a qualified HVAC inspector and plan reviewer who meets the same experience or certification standard the state requires, must follow the same statewide fee schedule for permitting and inspection that the department sets, and must handle HVAC complaints and violations within its own boundaries, with a right to a hearing under KRS Chapter 13B if a violation is not resolved. The state division keeps direct jurisdiction over institutional buildings and certain licensed care facilities, such as hospitals, nursing homes and day care centers, wherever they are located, regardless of local program status.
Sourcesdhbc.ky.gov 1dhbc.ky.gov 2dhbc.ky.gov 3apps.legislature.ky.gov 4
A homeowner or business with a problem involving HVAC work in Kentucky can file a formal complaint with the Division of HVAC. The division directs the complainant to a licensed HVAC inspector, who will contact the person to schedule a basic safety inspection and determine whether the situation meets the division's stipulations for a formal complaint. The division enforces code compliance and manufacturer's installation recommendations, but it is not authorized to diagnose mechanical performance issues with the equipment itself. Where code or life-safety issues are found, the division can notify the original installing contractor and require timely correction, and both the homeowner and the contractor receive formal case and inspection reports as the matter proceeds, with notice once it is resolved. If the homeowner chooses to pursue civil litigation instead, the division steps back from the matter, though an inspector may still testify or advocate on the homeowner's behalf in court if the division decides that is appropriate. Complaint records are available through a formal open records request. To check whether a contractor actually holds a Kentucky HVAC license before hiring, the department's website offers a public license search covering building inspectors, electrical, electrical inspection, manufactured housing, HVAC, plumbing and fire licensees, searchable by name or license type at the department's licensee search tool. A separate portal search is available for other licensee categories the department maintains outside that list. Verifying a license before signing a contract is the most direct way a customer can confirm the person doing the work is legally authorized to hold an HVAC permit and take responsibility for it.
Kentucky exempts 16 specific categories of activity or people from HVAC licensing under KRS 198B.674, even though the general rule requires a license to practice HVAC contracting. Exempt categories include a subordinate employee of a licensed master contractor who is not personally a journeyman or apprentice and does not independently engage in contracting; a federal government employee working on federally owned property; a property owner doing HVAC work on property the owner occupies; installers, servicers or repairers of residential window air conditioning units; a person licensed to work on boilers under KRS Chapter 236 while working on boiler devices; a professional engineer licensed under KRS Chapter 322 while preparing plans or conducting construction inspections; a full-time maintenance person or engineer performing routine maintenance for an employer; contractors and employees working on property regulated as a public utility under KRS Chapter 278, or a municipal electric, water, gas or sewer utility under KRS Chapter 96; air-flow-device adjustments made by those same utility entities alongside gas line work; certified manufactured-housing installers doing the initial air conditioning installation on a new manufactured home; a general retailer whose main business is not HVAC contracting, as long as it uses only licensed subcontractors, though the retailer keeps its own liability and insurance exposure if it performs HVAC work itself; anyone doing purely electrical work on an HVAC system; state employees performing weatherization assistance for low-income households; unpaid volunteer HVAC maintenance for a church or religious organization; installers of liquefied petroleum gas units employed by certain licensed LP gas dealers; and duct cleaners who do not cut or repair ductwork, or who restore any access hole they do cut as part of the cleaning.
Sourcesapps.legislature.ky.gov
A Kentucky HVAC license does not by itself satisfy federal refrigerant-handling law. Separate from state licensure, EPA regulations under Section 608 of the Clean Air Act, at 40 CFR Part 82, Subpart F, require that any technician who maintains, services, repairs or disposes of equipment that could release ozone-depleting refrigerants into the atmosphere be certified. This federal certification exists to prevent the intentional venting of ozone-depleting substances and their substitutes, including hydrofluorocarbons, during work on stationary air conditioning and refrigeration equipment, and it applies nationwide, on top of whatever state contractor license a technician holds. EPA does not issue the certification cards itself; a technician earns one through an EPA-approved certifying organization's test. There are four certification types: Type I, for small appliances; Type II, for high-pressure equipment; Type III, for low-pressure equipment; and Universal, which combines all three and lets a technician work across appliance types. A Kentucky HVAC contractor or mechanic who services residential split systems and window units, commercial rooftop units, chillers, or commercial refrigeration equipment containing regulated refrigerant needs the Section 608 certification type matching that equipment, in addition to holding a Kentucky Master HVAC Contractor or Journeyman HVAC Mechanic license. Kentucky's own HVAC statutes and regulations do not substitute for, reference, or waive this federal requirement; it sits alongside the state license as a separate, mandatory credential tied to handling refrigerant rather than to general HVAC installation and repair work. A lost certification card is replaced through the same certifying organization, not through the state, and EPA maintains its own resources describing the test topics for each certification type.
These are common details other guides publish about Kentucky, but we could not verify them from the agency source. Confirm them directly before relying on them.
Yes. The Department of Housing, Buildings and Construction, Division of Heating, Ventilation and Air Conditioning, has licensed HVAC contractors statewide since July 1995 under KRS 198B.650 to 198B.689, and it also runs a statewide HVAC permitting and inspection program.
Kentucky issues a Master HVAC Contractor license, a Journeyman HVAC Mechanic license, and an Apprentice HVAC Mechanic certificate. The master contractor holds and is responsible for permits; the journeyman works under a master's supervision; the apprentice registers and works under both.
Both the master and journeyman license require at least two years of qualifying HVAC experience, counted as a minimum of 1,500 hours per year. Approved schooling, teaching experience, or military training can count toward part of that requirement.
The master exam covers HVAC codes, standards and industry practice plus HVAC business law; the journeyman exam covers the same codes and practice without the business-law section. A passing score is 70 percent, and the department gives the exam at least twice a year.
The initial application fee is 250 dollars for a master license and 50 dollars for a journeyman license, each for a 12-month term. Exam fees are 150 dollars for the master exam and 50 dollars for the journeyman exam, and annual renewal matches the initial fee amount.
A master HVAC contractor must carry general liability insurance of at least 500,000 dollars and property damage insurance of at least 300,000 dollars from a carrier approved by the Kentucky Department of Insurance. No license is valid without proof of that coverage on file.
No. Kentucky's HVAC statutes and regulations require general liability and property damage insurance, but they do not require a surety bond from a master or journeyman HVAC licensee at any level.
HVAC licenses renew annually, by the last day of the licensee's birth month. A 60-day grace period follows expiration, with a restoration fee added, before the license terminates and reinstatement or full reapplication becomes necessary.
Yes, under KRS 198B.666, if the applicant's home state has substantially equal licensing, education and experience requirements and grants the same privilege to Kentucky licensees. The applicant still files the standard application, fee and proof of experience and insurance.
Practicing HVAC contracting without the required license, or advertising as a licensed master or journeyman contractor without holding that license, is a Class A misdemeanor under KRS 198B.686, with each instance treated as a separate offense.
Yes. Federal EPA regulations under Section 608 of the Clean Air Act require refrigerant-handling certification, in the Type I, II, III or Universal category matching the equipment serviced, for any technician working on covered equipment, regardless of state HVAC license.
The Department of Housing, Buildings and Construction publishes a public licensee search covering HVAC, along with electrical, plumbing, manufactured housing and building inspector licensees, searchable by name or license type on the department's website.
We can review the local market, your current search visibility, and paid-search fit before recommending any marketing work.