Wyoming HVAC Technician License: City-Level Rules (No State Board)

Wyoming does not issue a statewide HVAC technician license — licensing happens at the city level. Who actually licenses HVAC technicians and where to check, verified from official sources.

Requirements at a glance

No Wyoming state HVAC license exists (nothing to apply for at the state level): Wyoming issues no statewide HVAC, air conditioning, refrigeration, heating, mechanical, or plumbing license, and it has no state contractor licensing board. Wyoming Statutes Title 33 is titled 'Professions and Occupations' and is the state's licensing title; its chapters cover abstractors, accountants, architects, attorneys, barbers, boxing and combat sports, podiatrists, chiropractors, collection agencies, cosmetology, dance hall operators, debt adjusters, dentists and dental hygienists, embalmers and funeral directors, hotel keepers, junk dealers, itinerant merchants, nurses, nursing home administrators, optometrists, pharmacy, physical therapists, physicians and surgeons, psychology and behavior analysts, real estate brokers and salespersons, surveyors and engineers, veterinarians, bonded warehousemen, eye care practitioners, speech-language pathologists and audiologists, clinical laboratories and blood banks, hearing aid specialists, emergency medical services, radiologic technologists, professional counselors and marriage and family therapists, real estate appraisers, occupational therapy, geologists, water well drilling contractors and pump installers, respiratory care practitioners, athlete agents, athletic trainers, midwives, dietetics, and acupuncture. No chapter of Title 33 licenses HVAC, mechanical, plumbing, or general construction contracting - the only construction trade in the whole title is water well drilling. The one construction trade Wyoming does license at the state level sits outside Title 33 entirely: electricians, under W.S. 35-9-101 through 35-9-131, administered by the Department of Fire Prevention and Electrical Safety (the Wyoming State Fire Marshal's Office).
STATEWIDE and HVAC-specific - the limited electrical contractor license and LM-H limited technician license: Wyoming does regulate one slice of HVAC work statewide, and HVAC companies routinely miss it. Under W.S. 35-9-123(a), licensed electrical contractors employing licensed master or journeyman electricians, or registered apprentices they supervise, must install all electrical equipment, subject to a list of waivers. One of those waivers is for 'licensed limited electrical contractors employing licensed limited technicians or registered limited apprentice technicians who may install electrical equipment which falls under the scope of their limited license or registration. The electrical work shall only include the electrical system on the load side of the disconnect which supplies power to the electrical equipment that they are licensed to work on.' The statute then authorizes the chief electrical inspector to issue a limited electrical contractor's license to a contractor not qualified for a full electrical contractor's license but qualified in a limited area of expertise, and the first item on that list is 'installation, repair or remodel of heating, ventilating and air conditioning systems limited to wiring on the load side of the equipment disconnect' (W.S. 35-9-123(a)(viii)(A)). The State Fire Marshal's Office publishes the matching individual license as LM-H: 'Limited electrical work for heating, ventilating and air conditioning systems limited to electrical work on the load side of the equipment disconnect (4,000 Hours).' A limited technician is defined by the office as a person licensed by the department with two years (4,000 hours) of experience in the portion of the electrical wiring industry covered by the limited license, plus the technical knowledge to install and supervise the installation of the associated electrical equipment in accordance with the National Electrical Code and city, county and state ordinances and regulations. Work experience is documented by notarized letters or the office's employment verification form from past and present employers, notarized letters from local unions, or official letters from other licensing boards detailing the actual number of hours and character of the work. Classroom time also counts by statute: credit for time spent in any electrical school 'shall be given to master electricians, journeyman electricians, low voltage technicians or limited technicians for time spent in classes up to a total of two (2) years, or four thousand (4,000) hours, on the work experience requirements' (W.S. 35-9-126(a)) - so schooling can satisfy up to the entire requirement.
How the LM-H limited license is obtained, priced, and renewed: The State Fire Marshal's Office states that technician licensing can only be obtained through examination, that Wyoming adopts the National Electrical Code without modification, and that license examinations are based on the current edition of that code. After passing, the applicant uploads the pass letter to the office's licensing portal and the initial license fee is $100.00; testing fees are paid separately to the testing facility. A technician license is valid for three years, renewing on July 1 of every third year, and the renewal fee is $50.00 with a $50.00 late fee; the renewal window opens April 1 of the year before expiration and there is a 45-day grace period, after which the only route back to licensure is retaking the applicable examination. The company side is annual: a limited electrical contractor must file a license application with the chief electrical inspector on or before July 1 each year for each firm, must be or actively employ in a full-time capacity a licensed limited technician (or journeyman or master electrician) as the technician of record who assumes responsibility for compliance with the National Electrical Code, W.S. 35-9-120 through 35-9-130, and department rules, and that technician of record may serve only one company (W.S. 35-9-125(c)). The office prices the low voltage/limited contractor license at $200.00 new and renewal, and all such licenses 'expire on July 1 next following the date of issue.' By statute that fee is waived for a one-person operation: 'The limited electrical contractor's license fee shall be waived for any limited electrical contractor not employing additional limited technicians or limited apprentice technicians other than himself' (W.S. 35-9-125(c)). By statute the fees are ceilings the department sets under: limited electrical contractor's license not more than $200.00, limited technician's license not more than $100.00, temporary working permit not more than $50.00, examination fee not more than $300.00, and apprentice registration not more than $20.00 (W.S. 35-9-129(a)). Apprentice limited technicians register with the department (new license cost $20.00 per the office), must be enrolled in a training program approved by the department, must be supervised by a licensed technician, and no licensed technician may supervise more than one apprentice technician at a time (W.S. 35-9-127(b)). Effective April 1, 2025, per W.S. 9-4-217(h), the office adds a 2.5% processing fee to each credit or debit transaction at checkout, with a $1.00 minimum.
City of Cheyenne - HVAC contractor (Class C1) license plus individual master, journeyman, and apprentice licenses: The City of Cheyenne Contractor Licensing Board, established by Chapter 5.44 of the City of Cheyenne Code of Ordinances, licenses both companies and individual tradespeople. Its regulations state that for some trades, 'including Plumbing, Electrical, Refrigeration, and HVAC[,] all employees on a job site are required to hold a master, journeyman or apprentice license or be a qualified supervisor,' and that the holder of a contractor license must employ a person holding a master or qualified supervisor license in the appropriate building trade. HVAC is a Class C1 (tested) contractor license covering 'the installation, demolition, repair or alteration of warm air heating systems, duct work, venting systems, and general sheet metal work,' and it 'requires Limited Electrical - HVAC (Type 3) license in order to perform electrical work on the load side of the disconnect.' Refrigeration is a separate Class C1 license, and applicants for it must submit current EPA Type II, Type III, or Universal certification. Cheyenne's Class A, B, and R building contractor licenses expressly do NOT authorize electrical, plumbing, refrigeration, HVAC, or Class F fire-protection work. Individual experience thresholds: master level craft employee, four years with 8,000 hours documented experience as an apprentice (or certified equivalent training) plus three years with 6,000 hours as a journeyman, plus satisfactory examination results; journeyman level craft employee, four years with 8,000 hours documented experience in the trade as a licensed apprentice (or certified equivalent training) plus satisfactory examination results; residential plumbing/mechanical journeyman, two years with 4,000 hours as a licensed apprentice plus the applicable journeyman examination; apprentice, supervised at 100% in the first year, 75% in the second, 50% in the third, and 25% in the fourth. No more than three plumbing or mechanical apprentices may work under the direct supervision of one properly licensed journeyman or master. Examinations are administered by the International Code Council, NICET, NASCLA, or another testing agency approved by the Board, and applicants apply and pay the testing agency directly. Insurance: a Class C1 subcontractor carries commercial general liability of $300,000 per occurrence and $600,000 total aggregate, with the City of Cheyenne named as certificate holder, plus Wyoming workers' compensation insurance when required. Fees: Class C1 contractor license $50.00 application, $200.00 initial, $75.00 renewal; qualified supervisor or master $50.00 application, $50.00 initial, $25.00 renewal; journeyman $50.00 application, $30.00 initial, $15.00 renewal; apprentice $10.00 application, $10.00 initial, $5.00 renewal. All licenses expire annually, one year from the date of issuance, and if a license lapses more than 30 days the licensee must again show proof of a current published examination. Cheyenne also requires electrical contractors and electricians, including low voltage and limited voltage licensees, to submit a copy of their valid state license to renew the city license.
City of Casper - Mechanical Contractor, Mechanical Master, Journeyman, and Apprentice licenses: The City of Casper Community Development Department, Building Inspection Division, issues plumbing and mechanical trade licenses. A MECHANICAL CONTRACTOR license 'authorizes the contractor to conduct, carry on or engage in the business of heating, ventilation, air conditioning, refrigeration and associated sheet metal work,' and 'every applicant shall possess or provide proof of employment of a full-time licensed mechanical master.' A MECHANICAL MASTER license authorizes heating, venting, air conditioning, refrigeration, and associated sheet metal work; the city states that 'every applicant must show a certificate of completion of a mechanical apprenticeship training program recognized by the federal government, or the equivalent of four years of experience in a City of Casper licensed mechanical shop and five years of experience as a journeyman or master mechanical in a City of Casper licensed mechanical shop to qualify for a Mechanical Master license,' and applicants must also provide proof of successful testing applicable to the license category. A MECHANICAL JOURNEYMAN license covers the same trade work performed as an employee of a mechanical contractor and requires a certificate of completion of a federally recognized mechanical apprenticeship training program or the equivalent of four years of experience in a City of Casper licensed mechanical shop, plus proof of successful testing. A MECHANICAL APPRENTICE license is issued to the mechanical contractor in the name of the applicant and is valid only for the term of that employment. Approved testing: Mechanical Master, International Code Council G29-N or equivalent; Mechanical Journeyman, ICC G31-N, G29-N, or equivalent. Fees: mechanical/plumbing contractor $300.00 new and $150.00 renewal; mechanical/plumbing master $75.00 new and $37.50 renewal; mechanical/plumbing journeyman $25.00 new and $15.00 renewal; mechanical/plumbing apprentice $3.00 new and $3.00 renewal. The contractor classifications require proof of insurance, and the published minimums are $250,000 for public liability or personal injury or death of one person from one incident, $500,000 for personal injury or death of all persons from one incident, and $250,000 for property damage from one incident. Casper also licenses a separate GAS UTILITY CONTRACTOR and GAS UTILITY INSTALLER for installation and service of gas piping from the building out and gas appliances other than water heaters and boilers, as defined by the International Mechanical and Fuel Gas Codes.
City of Laramie - Mechanical Contractor license and individual trade licensing: The City of Laramie Code Administration Division has required contractor licensing since 2021. The city states that all general contractors working in Laramie must be licensed and that trade contractors - 'including those specializing in electrical, mechanical, plumbing, lawn sprinkler, fire protection, gas service, water and sewer, refrigeration, and petroleum or petroleum piping' - must also hold a valid City of Laramie contractor license, and that 'all individuals performing work in these fields - including masters (supervisors), journeymen, and apprentices - are required to be licensed with the City.' Laramie distinguishes the license from the certificate of qualification: the license holder may be an individual, business, or corporation responsible for the work, while the certificate of qualification holder is an individual - either the license holder or an employee - responsible for overseeing work in progress and serving as the primary contact between the city and the license holder, and 'every license holder must be represented at all times by a person holding a current City of Laramie master or supervisor certificate of qualification.' The city must be notified within ten days if the designated certificate holder leaves the licensee's employ. Mechanical Contractor and Refrigeration Contractor are separate published trade classifications. Fees: Mechanical Contractor $300.00 new license and $35.00 renewal (Refrigeration Contractor and Gas Service Contractor are priced the same; Electrical Contractor is $200.00 new and $25.00 renewal). In addition to license fees, an applicant must provide an appropriate business location, a telephone number answered during normal business hours, a certificate of insurance naming the City of Laramie as certificate holder in the amount of $500,000 combined single limit coverage with 20 days notice of cancellation, and proof of workers' compensation coverage (a State of Wyoming Workers Compensation Certificate of Good Standing). All licenses run from January 1 through December 31 of each calendar year; the renewal period opens November 15 annually, and failure to renew by December 31 requires a new license and a new license fee. Laramie adopted the 2024 International Code Council code cycle effective September 1, 2024.
Other Wyoming cities and counties set their own rules - check the specific jurisdiction: This record documents the three largest Wyoming municipal licensing programs for HVAC and mechanical work (Cheyenne, Casper, and Laramie). Other Wyoming cities and counties - including Gillette, Rock Springs, Sheridan, Green River, Evanston, Riverton, Jackson, Cody, and the counties surrounding them - set their own building-code adoption, permit, and contractor licensing rules, and some jurisdictions require no trade license at all. Wyoming's state fire marshal delegates fire, building, existing building standards, and electrical safety enforcement to municipalities and counties that apply for it and adopt minimum standards equivalent to or more stringent than the state's, and that authority reverts to the department if the local standards or certified inspectors are not maintained (W.S. 35-9-121(a)). Because there is no statewide HVAC license and no single statewide dataset, identify the exact city and county where the work will be performed and confirm that jurisdiction's rules before bidding. Do not assume one Wyoming city's rules apply in another.
FEDERAL (everywhere in Wyoming) - EPA Section 608 refrigerant certification: Separate from every Wyoming state and municipal license: under the Clean Air Act and 40 CFR part 82, subpart F, technicians who maintain, service, repair, or dispose of equipment that could release refrigerant must hold EPA Section 608 certification. This is a FEDERAL credential, held by the individual technician, and it is neither issued by nor accepted in place of any Wyoming municipal HVAC or mechanical license or the state's limited electrical technician license. The City of Casper's refrigeration path and the City of Cheyenne's refrigeration license both reference EPA certification types, but holding EPA 608 does not by itself satisfy a Cheyenne Class C1 HVAC license, a Casper mechanical license, a Laramie mechanical contractor license, or a Wyoming LM-H limited technician license.

Legal basis

Wyoming does not license HVAC technicians at the state level.

Wyoming does not license HVAC at the state level. There is no statewide HVAC, air conditioning, refrigeration, heating, mechanical, or plumbing license, no state contractor licensing board, no state HVAC examination, and no state HVAC fee schedule - so there is nothing to apply for at the state level. The proof runs two ways. First, from the state’s own licensing title: Wyoming Statutes Title 33, ‘Professions and Occupations,’ runs from abstractors and accountants through acupuncture, and not one of its chapters licenses HVAC, mechanical, plumbing, or general construction contracting; the sole construction trade in the entire title is water well drilling contractors and pump installers. Second, from the one construction trade Wyoming does license, which sits outside Title 33 altogether: electricians, under W.S. 35-9-101 through 35-9-131, administered by the Department of Fire Prevention and Electrical Safety (the Wyoming State Fire Marshal’s Office). Wyoming HVAC licensing is therefore a municipal matter, and the positive proof runs from the city programs that expressly claim the work.

There is one important statewide exception, and HVAC companies routinely miss it. Wyoming’s electrical statute requires that licensed electrical contractors install all electrical equipment, but it waives that requirement for ’licensed limited electrical contractors employing licensed limited technicians or registered limited apprentice technicians,’ whose ’electrical work shall only include the electrical system on the load side of the disconnect which supplies power to the electrical equipment that they are licensed to work on.’ The first limited category the chief electrical inspector may license is the ‘installation, repair or remodel of heating, ventilating and air conditioning systems limited to wiring on the load side of the equipment disconnect’ (W.S. 35-9-123(a)(viii)(A)). The State Fire Marshal’s Office publishes this as the LM-H limited technician license, requiring two years (4,000 hours) of experience in that portion of the electrical wiring industry and an examination based on the current National Electrical Code, which Wyoming adopts without modification. So an HVAC company that wires its own equipment on the load side of the disconnect needs a Wyoming limited electrical contractor’s license and a licensed limited technician of record - even though Wyoming issues no HVAC license as such.

The city programs differ in shape, so the credential you need depends on where you work. THE CITY OF CHEYENNE licenses both the company and every individual on the job: its Contractor Licensing Board’s regulations state that for some trades, ‘including Plumbing, Electrical, Refrigeration, and HVAC[,] all employees on a job site are required to hold a master, journeyman or apprentice license or be a qualified supervisor.’ HVAC is a Class C1 tested contractor license covering warm air heating systems, duct work, venting systems, and general sheet metal work, and it requires the city’s Limited Electrical - HVAC license to do electrical work on the load side of the disconnect. A master needs four years and 8,000 hours as an apprentice plus three years and 6,000 hours as a journeyman and a passing examination; a journeyman needs four years and 8,000 hours as a licensed apprentice and a passing examination; a residential plumbing/mechanical journeyman needs two years and 4,000 hours. Examinations come from the ICC, NICET, NASCLA, or another Board-approved agency. Fees are $50 application plus $200 initial and $75 renewal for the Class C1 contractor license, with separate, much smaller fees for the individual trade licenses, and every license expires one year from the date of issuance.

THE CITY OF CASPER licenses a Mechanical Contractor that must possess or employ a full-time licensed Mechanical Master, plus individual Mechanical Master, Journeyman, and Apprentice licenses. A Mechanical Master must show a certificate of completion of a federally recognized mechanical apprenticeship training program, or the equivalent of four years of experience in a City of Casper licensed mechanical shop and five years as a journeyman or master mechanical in a City of Casper licensed mechanical shop, plus proof of successful testing - ICC G29-N or equivalent for the master, ICC G31-N or G29-N or equivalent for the journeyman. Fees are $300 new and $150 renewal for the contractor, $75 and $37.50 for the master, $25 and $15 for the journeyman, and $3 for the apprentice; contractor classifications must show insurance of at least $250,000 per person, $500,000 for all persons from one incident, and $250,000 property damage. Casper also runs a separate gas utility contractor and gas utility installer license for gas piping from the building out.

THE CITY OF LARAMIE has required contractor licensing since 2021 and licenses mechanical and refrigeration trade contractors along with the individual masters, journeymen, and apprentices who work in them; every license holder must be represented at all times by a person holding a current city master or supervisor certificate of qualification. A Laramie Mechanical Contractor license costs $300 new and $35 to renew, requires a certificate of insurance naming the city as certificate holder at $500,000 combined single limit plus a Wyoming Workers Compensation Certificate of Good Standing, and runs January 1 through December 31, with renewals opening November 15.

Other Wyoming cities and counties - Gillette, Rock Springs, Sheridan, Jackson, Cody, Riverton and the rest - regulate under their own codes and permit rules, and some require no trade license at all. Wyoming’s state fire marshal delegates fire, building, and electrical enforcement to municipalities and counties that apply and adopt equivalent or stricter standards (W.S. 35-9-121(a)). This record covers the three largest programs and says so; identify the exact city and county of the job and confirm before bidding.

Finally, and separately from every Wyoming credential: EPA Section 608 certification is FEDERAL. Under the Clean Air Act and 40 CFR part 82, subpart F, anyone who maintains, services, repairs, or disposes of equipment that could release refrigerant must be Section 608 certified. It applies everywhere in Wyoming, it is held by the individual technician, and it is not a substitute for any city license or for the state’s limited electrical credentials.

What it’s called

Wyoming does not license HVAC technicians or contractors at the state level; a search for a ‘Wyoming HVAC license’ maps either to a LOCAL (city) credential or to the state’s HVAC-scoped electrical credential, and the two are not the same thing. Depending on the city, the local credential is called an ‘HVAC contractor license’ (the City of Cheyenne’s Class C1 HVAC license, with separate master, journeyman, and apprentice licenses, and a separate Class C1 Refrigeration license) or a ‘mechanical contractor license’ with individual ‘mechanical master,’ ‘mechanical journeyman,’ and ‘mechanical apprentice’ licenses (the City of Casper; the City of Laramie likewise licenses a ‘Mechanical Contractor’ and a separate ‘Refrigeration Contractor’). Common informal names - ‘HVAC license,’ ‘AC license,’ ‘air conditioning license,’ ‘mechanical license,’ ‘refrigeration license’ - all resolve to one of these municipal credentials. Statewide, the only HVAC-related license Wyoming itself issues is an ELECTRICAL one: the limited electrical contractor’s license held by the company and the LM-H limited technician license held by the individual, both administered by the Department of Fire Prevention and Electrical Safety (the Wyoming State Fire Marshal’s Office) and both scoped to wiring on the load side of the equipment disconnect. That is not a license to install heating and cooling equipment - it is a license to make the electrical connection to it - and Wyoming issues no state HVAC journeyman or HVAC master license. Separately, EPA Section 608 refrigerant-handling certification is a FEDERAL credential, not a Wyoming license, and is commonly confused with one.

Who does NOT need a license — exemptions

Wyoming licenses no HVAC occupation at the state level, so most operative carve-outs are municipal and differ by jurisdiction - there is no single statewide HVAC exemption list. What Wyoming does publish statewide is the exemption structure around the ELECTRICAL work that HVAC installation touches, in W.S. 35-9-123. Subsection (a) provides that ’licensed electrical contractors employing licensed master or journeymen electricians, or registered apprentice electricians supervised by a licensed master or journeyman electrician shall install all electrical equipment. This requirement is waived for the following, however the waiver does not exempt the following persons from meeting all other code requirements under this act’ - and the enumerated waivers are: (i) ‘Property owned or leased by a person when the person, his partner or a major stockholder of a family corporation is installing the equipment and the property is not for immediate resale’; (ii) ‘Oil or gas field operations, including those operations involving exploration, testing, drilling, production or transporting via pipeline of oil or gas, railroads, petroleum refineries, fertilizer manufacturing facilities, foundries, mines and their appurtenant facilities’; (iii) ‘Liquefied petroleum, gas, electric or communication facilities exercising their function as public utilities’; (iv) cable-TV, satellite-TV and telecommunications providers and their contractors and subcontractors, ‘provided such contractors and subcontractors are limited to the installation of low voltage cable, A.M. or F.M. radio stations, television stations, phone services, internet services, data services and related services’; (v) ‘Farms or ranches of forty (40) acres or more on deeded land’; (vi) buildings constructed by a school or community college district as part of an industrial arts curriculum under the direct supervision of a qualified industrial arts instructor, where the district ‘shall have the installations inspected by the state electrical inspector’s office or the local enforcement authority, whichever has jurisdiction, to ensure compliance with W.S. 35-9-120’; (vii) licensed low voltage electrical contractors employing licensed low voltage technicians or registered low voltage apprentice technicians working within the scope of their license, where ’no low voltage contractor may work on electrical systems which exceed ninety (90) volts unless allowed pursuant to this subsection’; (viii) licensed limited electrical contractors employing licensed limited technicians or registered limited apprentice technicians, where ’the electrical work shall only include the electrical system on the load side of the disconnect which supplies power to the electrical equipment that they are licensed to work on,’ and the limited categories the chief electrical inspector may license are HVAC systems, elevator systems, sign systems, water well and irrigation systems (each limited to wiring on the load side of the equipment disconnect), and ‘routine repair or maintenance of light fixtures limited to replacement of ballasts and fixture parts’; and (ix) employees of rural electric cooperatives as defined in W.S. 37-17-101(a)(i) performing specified new or upgraded service connections and emergency or outage repairs on secondary service wires. The limitation that reverses the answer for subcontractors is in the next subsection: ‘Exceptions shall not apply to anyone who contracts or subcontracts to or for any exempt person, partnership or corporation’ (W.S. 35-9-123(b)). At the municipal level the carve-outs are set ordinance by ordinance and differ: the City of Cheyenne’s regulations make its Class A, B, and R building contractor licenses expressly NOT authorize electrical, plumbing, refrigeration, HVAC, or Class F fire-protection work, so a general contractor is not exempt from hiring a licensed HVAC subcontractor, and the city’s Class D licensees ‘shall not act as a General Contractor and shall not be allowed to hire subcontractors,’ with a narrow allowance, on the Building Official’s approval, to engage a Class C licensee for related minor electrical, plumbing, refrigeration, HVAC, and fire protection work. Because HVAC exemptions in Wyoming are municipal, read the specific city or county code where the work will be performed; this record states what the three largest programs and the state electrical statute publish and does not generalize a single Wyoming-wide exemption.

Where to get licensed

There is no state HVAC board to call. Work through three layers.

STATEWIDE, IF YOU TOUCH THE WIRING: the Wyoming Department of Fire Prevention and Electrical Safety (Wyoming State Fire Marshal’s Office), Electrical Safety Division. If your company connects HVAC equipment on the load side of the equipment disconnect, you need a limited electrical contractor’s license and a licensed limited technician of record holding the LM-H category. The individual license comes only through examination based on the current National Electrical Code; the initial license fee is $100.00 and testing fees are paid to the testing facility. The technician license runs three years, renewing July 1 of every third year at $50.00 with a 45-day grace period; the limited electrical contractor’s license is $200.00 new and at renewal (waived for a solo contractor employing no additional limited technicians or apprentices - W.S. 35-9-125(c)) and expires on July 1 next following the date of issue. Applications and renewals are filed through the office’s online licensing portal.

IN CHEYENNE: apply to the City of Cheyenne Contractor Licensing Board through the Building Division. Have ready your qualified supervisor’s or master’s ICC, NICET, NASCLA, or other Board-approved examination result, documented experience hours, a certificate of insurance naming the City of Cheyenne as certificate holder at $300,000 per occurrence and $600,000 aggregate for a Class C1 subcontractor, and Wyoming workers’ compensation coverage where required. Budget $50 application plus $200 initial for the Class C1 HVAC contractor license and $75 to renew, plus the separate individual master, journeyman, and apprentice license fees. Licenses expire one year from the date of issuance, and every employee on an HVAC job site must hold a master, journeyman, or apprentice license or be a qualified supervisor.

IN CASPER: apply to the City of Casper Community Development Department, Building Inspection Division. The company needs a Mechanical Contractor license and must possess or employ a full-time licensed Mechanical Master; individuals need Mechanical Master, Journeyman, or Apprentice licenses. Testing is ICC G29-N or equivalent for the master and ICC G31-N or G29-N or equivalent for the journeyman. Budget $300 for the contractor license ($150 renewal), $75 for the master ($37.50 renewal), $25 for the journeyman ($15 renewal), and $3 for the apprentice, and carry insurance of at least $250,000 for one person, $500,000 for all persons from one incident, and $250,000 property damage. If you install gas piping from the building out, ask about the separate gas utility contractor and gas utility installer licenses.

IN LARAMIE: apply to the City of Laramie Code Administration Division through the city’s online licensing portal. Trade contractors in the mechanical and refrigeration classifications must be licensed, and so must the individual masters, journeymen, and apprentices; every license holder must be represented at all times by a person holding a current city master or supervisor certificate of qualification, and the city must be notified within ten days if that person leaves. Budget $300 for a new Mechanical Contractor license and $35 to renew, and provide a business location, a phone number answered during business hours, a certificate of insurance naming the City of Laramie as certificate holder at $500,000 combined single limit with 20 days notice of cancellation, and a State of Wyoming Workers Compensation Certificate of Good Standing. Licenses run January 1 through December 31 and renewals open November 15.

EVERYWHERE ELSE IN WYOMING: contact the building or code enforcement office of the specific city or county where the work will be performed. This record does not cover those jurisdictions and no statewide rule fills the gap.

EVERYWHERE IN WYOMING: if your work involves refrigerants, get EPA Section 608 certification. That is a FEDERAL credential under 40 CFR part 82, subpart F, held by the individual technician, and it is separate from every Wyoming credential above.

Frequently asked questions

Does Wyoming require a state HVAC license?

No. Wyoming issues no statewide HVAC, air conditioning, refrigeration, heating, mechanical, or plumbing license, and it has no state contractor licensing board. Wyoming Statutes Title 33, ‘Professions and Occupations,’ is the state’s licensing title and no chapter of it covers HVAC, mechanical, plumbing, or general construction contracting; the only construction trade in the entire title is water well drilling. The HVAC credential you need comes from the city where you work. There is one statewide exception that catches HVAC companies: if you wire your own equipment on the load side of the equipment disconnect, you need a Wyoming limited electrical contractor’s license and a licensed limited technician holding the LM-H category.

What is the LM-H limited technician license, and do I need one?

It is Wyoming’s HVAC-specific electrical credential. W.S. 35-9-123 requires that licensed electrical contractors install all electrical equipment, but waives that for limited electrical contractors whose ’electrical work shall only include the electrical system on the load side of the disconnect which supplies power to the electrical equipment that they are licensed to work on,’ and the first limited category the chief electrical inspector may issue covers the ‘installation, repair or remodel of heating, ventilating and air conditioning systems limited to wiring on the load side of the equipment disconnect.’ The State Fire Marshal’s Office publishes that as LM-H and requires two years, or 4,000 hours, of experience in that portion of the electrical wiring industry plus an examination based on the current National Electrical Code, which Wyoming adopts without modification. The initial license fee is $100.00 (testing fees are paid to the testing facility), the license runs three years renewing July 1 of every third year at $50.00, and the company also needs a limited electrical contractor’s license at $200.00 (waived for a solo contractor employing no additional limited technicians or apprentices - W.S. 35-9-125(c)) that expires July 1 next following the date of issue.

Where do you actually get an HVAC license in Wyoming?

From the city. In Cheyenne, the Contractor Licensing Board issues a Class C1 HVAC contractor license and individual master, journeyman, and apprentice licenses - and its regulations say that on Plumbing, Electrical, Refrigeration, and HVAC job sites, all employees must hold a master, journeyman, or apprentice license or be a qualified supervisor. In Casper, the Community Development Department’s Building Inspection Division issues a Mechanical Contractor license that must be backed by a full-time licensed Mechanical Master, plus Mechanical Master, Journeyman, and Apprentice licenses. In Laramie, the Code Administration Division licenses mechanical and refrigeration trade contractors and requires masters, journeymen, and apprentices to be licensed with the city. Other Wyoming cities and counties set their own rules, and some require no trade license at all - always confirm with the specific jurisdiction before bidding.

Does an individual technician need a license, or just the company?

In the cities that license HVAC, both. Cheyenne requires the company to hold the Class C1 HVAC contractor license and to employ a master or qualified supervisor, and requires every employee on an HVAC job site to hold a master, journeyman, or apprentice license or be a qualified supervisor. Casper licenses the Mechanical Contractor and separately licenses Mechanical Masters, Journeymen, and Apprentices; the contractor must possess or employ a full-time licensed Mechanical Master. Laramie licenses trade contractors and states that all individuals performing the work - masters or supervisors, journeymen, and apprentices - must be licensed with the city, and that every license holder must be represented at all times by a person holding a current city master or supervisor certificate of qualification. On the state side, the LM-H limited technician license is an individual license and the limited electrical contractor’s license is the company’s.

What experience and exams do the big Wyoming cities require for HVAC?

Cheyenne: a master level craft employee needs four years with 8,000 hours documented experience as an apprentice, or certified equivalent training, plus three years with 6,000 hours as a journeyman and satisfactory examination results; a journeyman needs four years with 8,000 hours as a licensed apprentice, or certified equivalent training, plus satisfactory examination results; a residential plumbing or mechanical journeyman needs two years with 4,000 hours as a licensed apprentice plus the applicable journeyman examination. Cheyenne examinations are administered by the ICC, NICET, NASCLA, or another agency approved by its Board, and applicants pay the testing agency directly. Casper: a Mechanical Master must show a certificate of completion of a federally recognized mechanical apprenticeship training program, or the equivalent of four years of experience in a City of Casper licensed mechanical shop and five years as a journeyman or master mechanical in a City of Casper licensed mechanical shop, plus proof of successful testing on ICC G29-N or equivalent; a Mechanical Journeyman needs the apprenticeship certificate or four years in a Casper licensed mechanical shop, plus ICC G31-N, G29-N, or equivalent.

How much does an HVAC license cost in Wyoming?

It depends on the city, and there is no statewide fee. Cheyenne charges $50.00 application plus $200.00 initial and $75.00 renewal for a Class C1 contractor license; its building trade licenses are $50/$50/$25 for a qualified supervisor or master, $50/$30/$15 for a journeyman, and $10/$10/$5 for an apprentice, and all licenses expire one year from the date of issuance. Casper charges $300.00 new and $150.00 renewal for a mechanical contractor, $75.00 and $37.50 for a mechanical master, $25.00 and $15.00 for a mechanical journeyman, and $3.00 for an apprentice. Laramie charges $300.00 new and $35.00 renewal for a Mechanical Contractor, on a January 1 to December 31 license year. On the state side, the limited electrical contractor’s license is $200.00 new and at renewal (waived for a solo contractor employing no additional limited technicians or apprentices - W.S. 35-9-125(c)) and the LM-H limited technician license is $100.00 initially with a $50.00 three-year renewal, plus examination fees paid to the testing facility and, since April 1, 2025, a 2.5% card processing fee.

Do I still need EPA 608 certification in Wyoming?

Yes, if you handle refrigerants. EPA Section 608 certification is a federal requirement under the Clean Air Act (40 CFR part 82, subpart F) for anyone who maintains, services, repairs, or disposes of equipment that could release refrigerant. It applies everywhere in Wyoming, it is held by the individual technician, and it is separate from - and does not satisfy - any city HVAC or mechanical license or the state’s limited electrical credentials. Cheyenne requires current EPA Type II, Type III, or Universal certification for its separate refrigeration contractor license, which shows how the federal credential feeds into a local license rather than replacing it.

See every license and certification LicensingAtlas covers in Wyoming.

Sources & verification

Last verified against these sources: July 25, 2026.

LicensingAtlas states licensing and certification requirements categorically from official sources. It is a reference, not legal or career advice, and requirements change frequently — confirm details with the issuing board before you act.

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