Wyoming · HVAC licensing · official-source guide
Wyoming issues no statewide HVAC contractor license. Heating, cooling and refrigeration contracting is licensed city by city, so Cheyenne, Casper, Gillette, Laramie and Sheridan each run their own boards, exams and fees. The Wyoming Department of Fire Prevention and Electrical Safety does license the limited electrical contractor and LM-H limited technician credentials HVAC firms need for equipment wiring.
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Verify a licenseVerified against agency sources on 2026-09-14. Rules and fees change; confirm with the named authority before relying on this guide.
Search the Wyoming statutes for a mechanical, HVAC or refrigeration board and you will not find one. Title 33, which covers professions and occupations, licenses no heating, ventilating, air conditioning or refrigeration trade. Title 35 creates the Department of Fire Prevention and Electrical Safety and licenses electricians, but it stops there for mechanical work. That means there is no single Wyoming card you can carry into every town. Instead each incorporated city writes its own contractor licensing chapter and runs its own board of examiners. Cheyenne licenses HVAC and refrigeration separately under its Contractor Licensing Board. Casper issues a Mechanical Contractor license through its Community Development Department. Gillette issues a Class D HVAC Contractor license and a separate Class D Refrigeration Contractor license. Laramie licenses Mechanical Contractors and Refrigeration Contractors as two of its trade classifications. Sheridan issues one HVAC/Mechanical Contractor license. A company working the Front Range corridor from Cheyenne to Casper to Gillette therefore holds three separate municipal licenses, each with its own application, its own fee cycle and its own insurance certificate on file. Plan the license map before you plan the service area. The practical rule for a Wyoming HVAC business is simple: your license obligations follow the city limits of every town you take calls in, plus the state electrical credential described in the next section, plus the federal refrigerant certification. Nothing about that stack is optional, and none of it transfers automatically when you cross into the next county.
Sourceswyoleg.gov 1wyoleg.gov 2cheyennecity.org 3casperwy.gov 4gillettewy.gov 5cityoflaramie.org 6sheridanwy.gov 7
Wyoming does regulate one piece of HVAC work at state level, and contractors miss it constantly. Under W.S. 35-9-123(a)(viii), a licensed limited electrical contractor employing licensed limited technicians may install electrical equipment on the load side of the disconnect that supplies power to the equipment they are licensed to work on. Subparagraph (A) names heating, ventilating and air conditioning systems specifically. The chief electrical inspector at the Wyoming State Fire Marshal's Office issues that Limited Electrical Contractor license. The matching individual credential is the LM-H limited technician license, which covers limited electrical work for heating, ventilating and air conditioning systems on the load side of the equipment disconnect and requires 4,000 hours of experience plus an examination. The Low Voltage/Limited Contractor license costs $200.00 new and at renewal, and it expires on July 1 next following the date of issue. A limited technician license costs $100.00 initially, runs three years, renews on July 1 of every third year, and the renewal fee is $50.00. Statute caps the limited electrical contractor license fee at $200.00 and the limited technician license fee at $100.00, with an examination fee capped at $300.00. A limited electrical contractor must actively employ a Wyoming licensed limited technician of record in a full-time capacity, and that person can be technician of record for only one company. Sheridan's own licensing packet points HVAC applicants to this state page when their work touches electrical components.
Cheyenne draws a line most states do not. Section 18.8 of the Contractor Licensing Regulations defines an HVAC license as the installation, demolition, repair or alteration of warm air heating systems, duct work, venting systems and general sheet metal work. Section 18.10 defines a separate Refrigeration license as the installation, demolition, repair or alteration of refrigeration equipment and systems. A shop that installs furnaces and ductwork and also charges split systems needs both. Both sit in the Class C1 tested subcontractor category. Applicants for the refrigeration license must submit current certification of Type II, Type III or Universal Certification with the application, so Cheyenne folds the federal refrigerant rule directly into its local paperwork. Section 18.4 adds a third card. Any plumbing, refrigeration or HVAC licensee who wants to touch wiring on the load side of the disconnect must hold a Limited Electrical license, and section 18.4.4 describes that limited category as covering heating, ventilating, air conditioning and refrigeration wiring on the load side of the equipment disconnect. A licensee without it is not permitted to perform that electrical work at all. Class A, Class B and Class R general building contractors are barred from self-performing electrical, plumbing, refrigeration, HVAC and Class F fire suppression work, so a Cheyenne builder must subcontract every piece of mechanical work to a properly licensed shop. The Contractor Licensing Board is established by Chapter 5.44 of the Cheyenne Code of Ordinances and provides the official interpretation when a scope question is genuinely ambiguous.
Sourcescheyennecity.org
Cheyenne licenses the company and the people separately. Section 13.0 says an entity gets a contractor license only if it always employs, in an active full-time capacity, a qualified supervisor or master holding the license class matching the contractor license. That person may represent only one contractor, must be on the job site within twenty-four hours of notice from the Building Official, and if they leave the company has three working days to notify the city and up to thirty calendar days to register a replacement, extendable to sixty for extreme circumstances. For the mechanical trades the hour thresholds are specific. A master level craft employee needs four years and 8,000 hours documented as an apprentice, or certified equivalent training, plus three years and 6,000 hours as a journeyman, plus satisfactory examination results. A journeyman needs four years and 8,000 hours as a licensed apprentice or certified equivalent training plus passing exam results. A Residential Plumbing/Mechanical Journeyman needs two years and 4,000 hours and may work at journeyman level on IRC structures only. A Class C qualified supervisor needs three years and 6,000 hours. Dates and hours must be verified by a third party, and applicants who do not provide that notarized verification will not be considered by the board. Exams are administered by the International Code Council, NICET, NASCLA or another testing agency the board approves, and the applicant pays the testing agency directly. Apprentice supervision steps down by year: one hundred percent in year one, seventy-five in year two, fifty in year three, twenty-five in year four. No more than three mechanical apprentices may work under one journeyman or master.
Sourcescheyennecity.org
Cheyenne charges a $50.00 non-refundable application fee for every contractor license class. A Class C1 tested subcontractor license, the category HVAC and refrigeration fall into, costs $200.00 initially and $75.00 to renew. A Class C2 non-tested license is also $200.00 initially but renews at $50.00. For comparison, a Class A general contractor license is $600.00 initially and $200.00 to renew. On the individual side, a qualified supervisor or master license costs $50.00 to apply, $50.00 initially and $25.00 to renew. A journeyman is $50.00 to apply, $30.00 initially and $15.00 to renew. An apprentice is $10.00, $10.00 and $5.00. Insurance is tied to class. Class C1 subcontractors must carry commercial general liability of at least $300,000 per occurrence and $600,000 total aggregate, with the City of Cheyenne named as certificate holder. Class A and Class B contractors carry $1,000,000 and $2,000,000. Wyoming workers compensation coverage is required where state law applies, and no license issues until the certificate of insurance and the workers compensation letter of good standing are on file. Licenses expire annually, one year from the date of issuance, and the city notifies licensees roughly sixty days ahead. Miss the date and the license expires outright, with no renewal status available. Let it sit more than thirty days past expiration and you must provide proof of a current published ICC or NICET examination all over again. Working on an expired license counts as operating without a license.
Sourcescheyennecity.org
Casper runs mechanical licensing through the Community Development Department and its Building Inspection Division. A Mechanical Contractor license authorizes the business of heating, ventilation, air conditioning, refrigeration and associated sheet metal work, and every applicant must possess or provide proof of employment of a full-time licensed mechanical master. Casper does not split refrigeration into a separate card the way Cheyenne does, so one mechanical classification carries the whole scope. The Mechanical Master license 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 five years as a journeyman or master mechanical in a City of Casper licensed mechanical shop. That in-city experience wording matters if you are relocating a crew from out of state. The Mechanical Journeyman license requires the same apprenticeship certificate or the equivalent of four years of experience in a City of Casper licensed mechanical shop. 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, so apprentices do not carry their card to the next employer. Applications go to the Chief Building Official with notarized experience affidavits and proof of testing. Payment is not sent with the application. Once the Building Official approves, the applicant is notified and must supply a certificate of insurance and the license fee before the license is issued.
Sourcescasperwy.gov 1casperwy.gov 2
Casper publishes its mechanical exam codes, which removes the guesswork. A Mechanical Master must pass International Code Council exam G29-N or equivalent. A Mechanical Journeyman must pass ICC G31-N, G29-N or equivalent. For contrast, a Master Plumber takes G27-N and a Journeyman Plumber takes G27-N or G28-N. ICC offers testing in multiple languages through its exam catalog. Fees are modest compared with the paperwork. A Mechanical Contractor license costs $300.00 new and $150.00 to renew. A Mechanical Master is $75.00 new and $37.50 to renew. A Mechanical Journeyman is $25.00 new and $15.00 to renew. A Mechanical Apprentice is $3.00 new and $3.00 to renew. A Gas Utility Contractor license, which covers gas piping from the building out and gas appliances other than water heaters and boilers, is $150.00 new and $75.00 to renew, so a mechanical shop that also runs yard gas lines is buying a second card. The mechanical and plumbing contractor classifications carry minimum insurance of $250,000.00 for public liability or personal injury or death of one person from one incident, $500,000.00 for personal injury or death of all persons from one incident, and $250,000.00 for property damage from one incident. Contractor classifications require proof of insurance; master, journeyman and installer classifications require proof of testing or certification. The same insurance minimums apply to reciprocal licenses issued under the Casper reciprocity program.
Gillette puts HVAC in its Class D vocational contractor group. A Class D HVAC Contractor may perform work authorized under the 2024 International Mechanical Code as adopted and amended by the city, and may not perform gas pipefitter work under that license. Refrigeration is a separate Class D category, and gas pipefitting is a third. The HVAC Contractor must designate a Master of Record who is a full-time employee or an owner, licensed with the city as a Master HVAC. If that person resigns the company has sixty days to name a replacement. All Master, Journeyman and Apprentice HVAC Technicians must hold individual trade licenses with the city, and one Master or Journeyman supervises no more than three Apprentice HVAC Technicians. Licensing is required regardless of project size or duration and whether or not a permit or inspection is required. A Class D Vocational Contractor application fee is $150.00. Class C specialty is $75.00, Class R residential is $150.00, Class B is $300.00 and Class A is $500.00. Class C, Class D and Class F contractors must carry general liability of $300,000 per occurrence and $600,000 total aggregate, with the Building Inspection Division named as certificate holder. Every applicant must also post a surety or license and permit bond of not less than $5,000 naming the City of Gillette as obligee. If either the insurance certificate or the bond lapses during the license term the license is immediately suspended and no inspections, permits or certificates of occupancy issue until it is restored. Licenses run one year and renew annually. Applications go to the Board of Examiners on a published meeting calendar.
Laramie requires a city contractor license for general contractors and for trade contractors in electrical, mechanical, plumbing, lawn sprinkler, fire protection, gas service, water and sewer, refrigeration, and petroleum or petroleum piping. Mechanical Contractor and Refrigeration Contractor are listed as distinct classifications, so a Laramie shop doing both furnace changeouts and commercial refrigeration carries two license lines. A Mechanical Contractor license costs $300.00 new and $35.00 to renew. A Refrigeration Contractor license is also $300.00 new and $35.00 to renew, as are Plumbing, Gas Service and Water and Sewer Utility. An Electrical Contractor license is $200.00 new and $25.00 to renew. Water Softener, Fire Protection, Petroleum Products Piping and Lawn Sprinkler are $150.00 new and $20.00 to renew. Every license runs from January 1 through December 31 of each calendar year. Failure to renew by December 31 means you apply for a new license and pay the new license fee, not the renewal fee, which is a large difference at these numbers. Beyond the fee, Laramie wants 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 $500,000.00 combined single limit with twenty days notice of cancellation, and a State of Wyoming Workers Compensation Certificate of Good Standing. New licenses and renewals are filed through the city Civic Access web portal. Laramie adopted the 2024 International Code Council cycle effective September 1, 2024.
Laramie separates the license from the certificate of qualification. The license holder may be an individual, business or corporation responsible for the work. The certificate of qualification holder is an individual, either the license holder or an employee, who oversees work in progress and acts as the primary contact between the city and the license holder. Every license holder must be represented at all times by a person holding a current City of Laramie master or supervisor certificate of qualification, and you must notify the city within ten days if that person leaves. Failure to provide personal supervision is grounds for suspension. Laramie states minimum experience in years rather than hours. Mechanical requires three years for Master and four years for Journeyman. Refrigeration requires two years for Master and three years for Journeyman. Gas Service matches Refrigeration at two and three. Plumbing matches Mechanical at three and four. An Apprentice must be employed by a licensed contractor and work under direct supervision of a contractor or journeyman. Examinations for Master and Journeyman certification run through Pearson VUE for the Wyoming Association of Municipalities or for the International Code Council, and an official result of PASS at the level applied for must accompany the Verification of Experience. That verification must be completed by someone knowledgeable of the applicant's experience and notarized in Wyoming. Individual certificate fees are $20.00 new and $15.00 renewal for Master or Supervisor, $15.00 and $10.00 for Journeyman, and $10.00 and $5.00 for Apprentice. Certificates expire December 31 and must be renewed by January 31.
Sheridan issues a single HVAC/Mechanical Contractor license covering installation of any HVAC or mechanical work on commercial, residential or other building types. The license costs $200.00. Qualifying takes the 2018 G29 ICC exam, a four year Journeyman Mechanical verification on the city's Form JM, and a two year Project Verification on Form A, plus a $1,000,000 liability insurance certificate and a $10,000 license and permit bond. Sheridan is explicit that an HVAC or mechanical company cannot operate on a Master license alone. The business must hold both a Contractor License and a Master of Record for the trade. One person can qualify for both, or the business can employ a licensed contractor and a separate licensed Master of Record. The Mechanical Master license costs $50.00 and requires the 2018 G29 Master Mechanical ICC exam plus proof that you meet the Mechanical Contractor requirements. Every license carries its own $1,000,000 liability coverage and its own bond; only Master and Journeyman licenses are exempt from bond and insurance. All licenses renew each year twelve months after the date of issuance, at $200.00 for a contractor license and $50.00 for Master and Journeyman. Miss the renewal by thirty days and you are delinquent, must stop work, and pay a $100.00 delinquent fee. Stay delinquent a year and you reapply from scratch including examination. Sheridan gives a company thirty days to replace a departed Master of Record or qualified licensed contractor.
Because licensing is municipal, reciprocity in Wyoming is a town-by-town question rather than a state compact, and the answers differ sharply. Casper operates an explicit Reciprocal Contractor License. It grants the right to engage in Electrical, Plumbing, Mechanical or General Contracting under the classification the applicant already holds in another Wyoming jurisdiction, provided that license is equivalent to Casper licensure. The applicant must document that the other Wyoming license is current and in good standing and that the testing behind it is comparable to what Casper requires. The savings are substantial: a reciprocal Mechanical Contractor license costs $5.00 new and $3.00 to renew, and a reciprocal Mechanical Master or Journeyman is $50.00 new and $25.00 to renew, against $300.00 and $75.00 for the standard versions. Reciprocal licenses still carry the same insurance minimums of $250,000.00, $500,000.00 and $250,000.00. Cheyenne takes a narrower line. Its regulations say the board may grant reciprocity with other state jurisdictions and agencies as it determines appropriate, note that Wyoming has adopted a statute allowing reciprocity for jurisdictions in Wyoming only, and reserve the right to evaluate Wyoming reciprocal licenses case by case. The Building Division keeps a record of approved reciprocal agreements. Sheridan is the outlier and says so plainly: the city does not accept licensing from other cities, towns, counties or states as a means to obtain licensing locally. Anyone wanting to work in Sheridan complies with Sheridan's requirements from the beginning. Never assume a card travels.
Every Wyoming city license application checks the same two state boxes, so handle them first. Wyoming corporate registration with the Secretary of State is required for Wyoming and out-of-state contractors alike, and the printout you attach must show a status of active and a standing of good. Gillette requires that annually. Gillette also flags the narrow exception in W.S. 17-16-1501(b)(x) for an isolated task completed within thirty days and not repeated within the same thirty days. Workers compensation is the second box. Wyoming runs a monopolistic fund, so coverage is bought from the state rather than a private carrier. Wyoming law requires employers subject to the Workers Compensation Act to apply for coverage and receive a statement of coverage before starting work in the state, under Wyo. Stat. 27-14-101 and 27-14-207. Even a business that may be non-liable or optional under the fund must still register so the Department of Workforce Services can make that determination. Any business performing work in Wyoming, or hiring a Wyoming resident, registers with Workforce Services, and the same joint registration covers unemployment insurance. Cities then verify it. Cheyenne will not issue a license until the certificate of insurance and the Wyoming workers compensation letter of good standing are on file. Laramie requires a State of Wyoming Workers Compensation Certificate of Good Standing with the application. Gillette requires letters of good standing for both workers compensation and unemployment insurance. Out-of-state employers complete an additional questionnaire.
Sourcessos.wyo.gov 1dws.wyo.gov 2gillettewy.gov 3cheyennecity.org 4cityoflaramie.org 5
No Wyoming city license substitutes for federal refrigerant certification, and at least one city checks it directly. EPA regulations at 40 CFR Part 82, Subpart F, under Section 608 of the Clean Air Act, require that technicians who maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere be certified. EPA defines a technician as an individual who attaches or detaches hoses and gauges to measure pressure within an appliance, adds refrigerant to or removes refrigerant from an appliance, or performs any other activity that violates the integrity of a small appliance or an MVAC-like appliance other than disposal. There are four certification types: Type I for servicing small appliances, Type II for servicing or disposing of high pressure and very high pressure appliances other than small appliances and MVACs, Type III for low pressure appliances, and Universal for all types. Technicians must pass an EPA-approved test administered by an EPA-approved certifying organization. Section 608 technician certification credentials do not expire. A core test taken open book cannot be used toward Universal certification; the core must be proctored for that. Apprentices are exempt while closely and continually supervised by a certified technician. EPA does not issue the cards, so a replacement comes from the certifying organization. Cheyenne ties this straight into local licensure: applicants for its Refrigeration license must submit current Type II, Type III or Universal certification with the application. Keep copies of every technician's card where a city inspector or a customer can see them.
Cheyenne regulates advertising as tightly as it regulates the wrench work, and that is the rule most Wyoming HVAC marketers trip over. Section 3.1 says no person may perform work, services or advertising related to construction, alteration, repair or equipping of any building within the city without first obtaining the required contractor and building trade licenses. The regulations define advertising broadly: providing building or construction estimates to any person, firm or entity, or making representations to the public, through any printed, electronic, visual or verbal means, that you are authorized or licensed to perform that work. A website, a truck wrap, a paid search ad and a verbal quote all land inside that definition. Submitting bids under an invitational bidding process is carved out. The consequence is not just a fine. The Contractor Licensing Board may deny a license application outright where the applicant has performed work, services or advertising without a license. Section 3.8.1 requires that while engaged in a building or trade activity every licensee carry a current license card signed by the board chairperson. Sheridan bars lending your name: no licensee shall allow his or her name to be used by another person for obtaining permits or for doing business or work under the license, under Chapter 7, Section 18 of the Sheridan Municipal Code. Gillette licenses are not transferable and may not be shared. So market the classification you actually hold. Do not advertise refrigeration service in Cheyenne on an HVAC-only license.
Wyoming buyers can check you, city by city, and several cities make it easy. Cheyenne moved its licensing and permitting fully online and its OpenGov portal lets the public search contractor licensing as well as building permits applied for after June 12, 2025. The Wyoming State Fire Marshal's Office runs a public portal for electrical credentials, which is where a customer or a general contractor confirms your limited electrical contractor or limited technician status. Gillette publishes an Active Contractor's List as a downloadable document and invites callers to phone the Building Inspection Division at 307-686-5260 to confirm a contractor is current. Laramie publishes a licensed contractor list through its document center. Penalties are local and they add up. Gillette makes doing business in the city as a contractor without a license, or after suspension, a misdemeanor subject to a fine of not more than $750.00, with each day the violation continues counted as a separate offense. Cheyenne charges an investigation fee equal to the license fee, plus the permit fee, to anyone who performs construction work without first obtaining the required license or permit, and that fee is owed whether or not the license is later obtained. Sheridan requires delinquent licensees to stop work until a $100.00 delinquent fee is paid. On the state electrical side, W.S. 35-9-130 makes a violation a misdemeanor punishable by a fine of not more than $500.00, up to six months imprisonment, license revocation, or all three, and up to $1,000.00 for a corporation.
Sourcescheyennecity.org 1wyelectrician.imagetrendlicense.com 2gillettewy.gov 3gillettewy.gov 4cityoflaramie.org 5cheyennecity.org 6sheridanwy.gov 7wyoleg.gov 8
These are common details other guides publish about Wyoming, but we could not verify them from the agency source. Confirm them directly before relying on them.
No. Wyoming statutes create no mechanical, HVAC or refrigeration licensing board. Title 33 licenses many professions and none of them is HVAC. Licensing happens at the city level, so Cheyenne, Casper, Gillette, Laramie and Sheridan each license mechanical contractors under their own municipal codes.
A Limited Electrical Contractor license from the Wyoming State Fire Marshal's Office if your crews wire on the load side of the equipment disconnect. The matching individual card is the LM-H limited technician license for heating, ventilating and air conditioning, which takes 4,000 hours and an exam.
The Low Voltage/Limited Contractor license is $200.00 new and $200.00 at renewal, expiring July 1 next following the date of issue. A limited technician license is $100.00 initially, valid three years, renewing July 1 of every third year at $50.00.
Yes. Cheyenne section 18.8 covers warm air heating, duct work, venting and sheet metal. Section 18.10 covers refrigeration equipment and systems as a separate Class C1 license, and refrigeration applicants must submit current Type II, Type III or Universal certification.
Proof that you possess or employ a full-time licensed mechanical master. The Mechanical Master needs a federally recognized apprenticeship certificate, or four years in a Casper licensed mechanical shop plus five years as a journeyman or master there, plus ICC exam G29-N or equivalent.
Public liability or personal injury or death of one person from one incident at $250,000.00, personal injury or death of all persons from one incident at $500,000.00, and property damage from one incident at $250,000.00. The same minimums apply to reciprocal licenses.
Yes. Gillette requires a surety or license and permit bond of not less than $5,000 naming the City of Gillette as obligee, plus $300,000 per occurrence and $600,000 aggregate liability. If either lapses mid-term the license is immediately suspended.
All Laramie licenses run January 1 through December 31. Miss the December 31 renewal and you must apply for a new license and pay the new license fee. A Mechanical Contractor license is $300.00 new against $35.00 to renew, so the gap is expensive.
No. Sheridan states it does not accept licensing from other cities, towns, counties or states as a means to obtain licensing locally. You qualify under Sheridan rules, which for HVAC means the 2018 G29 ICC exam, Form JM, Form A, $1,000,000 liability and a $10,000 bond.
Not in Sheridan, Casper, Gillette or Cheyenne. Each requires a company license plus a designated master or qualified supervisor. Sheridan says the business must hold both a Contractor License and a Master of Record. Cheyenne gives thirty days to replace a departed qualified supervisor.
No. Cheyenne section 3.1 bars performing work, services or advertising without the required licenses, and defines advertising to include giving construction estimates or representing to the public through printed, electronic, visual or verbal means that you are licensed. The board may deny applications over it.
No. EPA states Section 608 technician certification credentials do not expire. There are four types: Type I small appliances, Type II high pressure, Type III low pressure, and Universal. A core test taken open book cannot count toward Universal certification.
We can review the local market, your current search visibility, and paid-search fit before recommending any marketing work.