How to Get an HVAC License in Maine: Ten Fuel Board Licenses Explained

To get an HVAC license in Maine, you do not apply for one credential. You qualify for one or more of the Maine Fuel Board's ten individual licenses, chosen by the fuel you work on: oil, solid fuel, wood pellets, propane or natural gas. If your work is air conditioning, refrigeration or heat pump installation and you never touch a combustion appliance, the Fuel Board does not license you at all; your federal EPA Section 608 certification governs that work instead.

At a glance

• Who licenses it: the Maine Fuel Board, inside the Office of Professional and Occupational Regulation (OPOR)
• How many licenses: ten, organized by fuel type, not by job title
• Air conditioning, refrigeration and heat pumps only: no Fuel Board license exists; EPA Section 608 governs that work
• Fees: $20 to $200 per license, plus a $21 background check, renewed every two years
• Exam: PROV, Inc., open book, with a 70% passing score for journeyman and master oil and solid fuel exams

This guide walks through which license fits your work, the experience or training each one requires, the exam, the application steps in order, every fee, what happens at renewal, and what changes when a company rather than an individual needs to be covered. New to Maine licensing generally? Start with the Maine contractor license requirements, or see how to get a contractor license in every state.

How to Get an HVAC License in Maine

What Maine has instead of an HVAC license is the Maine Fuel Board, inside OPOR at the Department of Professional and Financial Regulation. Its licensing chapter is 32 M.R.S. chapter 139. The board issues ten separate individual licenses built entirely around what you are burning, plus a set of five "authorities" stacked onto a single propane and natural gas card. Which license you need depends on the equipment you touch, not your job title.

Board contact:

• Mailing, Maine Fuel Board, 35 State House Station, Augusta, ME 04333-0035
• Courier / delivery, 76 Northern Avenue, Gardiner, ME 04345
• Email, fuel.board@maine.gov
• Phone, (207) 624-8627
• Online applications and renewals, the OPOR licensing portal, board number 4320

Every Fuel Board license carries a $21.00 criminal background check fee on top of the license fee, and runs on a two-year term based on your first licensure date, a rolling personal anniversary, not a fixed statewide expiration. Two exceptions: the Temporary Permit runs one year, and the "Add an Authority" endorsement carries no separate fee.

The board lists no reciprocity agreement with any other state on its FAQ page or its homepage. Two statutory routes exist instead.

First, 32 M.R.S. Section 18142-A directs the board to set up a license by endorsement process, under Title 10, Section 8003-H, for each license it decides is appropriate for endorsement. Second, the qualification sections for master and journeyman oil and solid fuel technicians and for propane and natural gas technicians (Sections 18132, 18133 and 18135) each require an out-of-state applicant to present the board satisfactory evidence of equivalent experience. Ask the board which route fits your license before you file.

Who Needs Which Fuel Board License

Maine licenses the equipment, not the trade. Use this table to find your starting point.

Notes on reading this table

• Cleaning the ash pan, burn pot, distribution tubes, collection box and fan on a pellet appliance only needs the narrower Limited Wood Pellet Technician license, not full Solid Fuel Technician.
• A new hire at a bulk propane plant or on a delivery route can start on a one-year Temporary Permit while completing licensure; delivery and plant work use different authorities on the same Propane and Natural Gas Technician card.
• Testing combustion safety and efficiency without making adjustments only needs the Oil or Propane Limited Energy Auditor Technician license.
• Many Maine heating companies hold several of these at once: a master oil burner card for the heating side, a propane and natural gas card with the right authorities for gas work, and sometimes a plumbing license where water lines are involved.
• The one documented crossover between the combustion side and the electrical side is the mini-split heat pump exemption, covered later in this guide.

And here is the part that trips up out-of-state technicians and anyone building a Maine service company: if you only do air conditioning, refrigeration and heat pumps, and never touch a combustion appliance, the Maine Fuel Board does not license you at all. There is no state card for that work. Your federal EPA Section 608 certification is what governs refrigerant handling everywhere in the country, not a Maine-specific requirement.

The Ten License Types

The oil burner and solid fuel ladder

Three rungs, and the license reads "Oil Burner and/or Solid Fuel Technician", so one card can carry either authority or both.

Apprentice Oil Burner and/or Solid Fuel Technician. A person licensed by the board under the direct supervision of a licensed master. No exam, no prior experience, just a completed application. License fee $40.00, background check $21.00, biennial renewal $40.00. A late renewal past 90 days drops you into new-applicant requirements, there is no reinstatement corridor at this level.

One wrinkle worth knowing: a licensed journeyman or master may apply for a Temporary Apprentice license in another authority, letting an experienced oil tech step sideways into solid fuel rather than starting cold.

Journeyman Oil Burner and/or Solid Fuel Technician. Works under the indirect supervision of a master, meaning the journeyman works alone on the job but still operates under a master's license. Three pathways to the exam: at least 1 year as a licensed apprentice; or a board-approved course of at least 160 hours (at least 75 lab hours) plus 6 months as a licensed apprentice; or a minimum one-year accredited community college heating course of at least 320 hours (at least 150 lab hours), which requires no apprentice time at all. Documentation is an affidavit from a licensed master verifying your hours, plus a transcript or certificate for any schooling route. License fee $100.00, background check $21.00, biennial renewal $100.00.

Master Oil Burner and/or Solid Fuel Technician. The top of the ladder, and the license a heating company actually runs on, since it carries no supervision requirement above it. Requirements differ sharply by fuel: 4 years of licensed experience for oil, with at least 2 of those years as a journeyman; or 2 years as a licensed apprentice for solid fuel. A genuinely useful shortcut: a licensed Master Oil Burner Technician can sit for the Master Solid Fuel exam without acquiring any solid fuel practical experience at all, just the exam. Under 32 M.R.S. Section 18132(1)(A), the master oil license is not one undifferentiated card; it requires one or more of five specific authorities: No. 1 and No. 2 oils up to 15 gallons per hour, No. 1 and No. 2 oils over 15 gallons per hour, No. 4, No. 5 and No. 6 oils, No. 1 to No. 6 oils, and pellet-fired central heating appliances.

License fee $200.00, background check $21.00, biennial renewal $200.00.

The propane and natural gas authorities

This side works differently. Instead of a ladder, it is one Propane and Natural Gas Technician license carrying one or more of five authorities:

500,000 BTUs per appliance is the dividing line, per appliance, not per building or system. Qualifying for the license requires completing a board-approved training program before sitting for the exam. License fee $100.00, background check $21.00, renewal $100.00 every two years. Adding an authority later costs $0, you just need to presently hold the license, pass the exam approved for that authority, and complete the certified employee training program for it.

A Propane and Natural Gas Helper assists under the strictest supervision standard on the board's books, direct and continuous, on-site supervision by a licensed technician. License fee $20.00, background check $21.00, biennial renewal $20.00. A one-year, non-renewable Temporary Permit covers new hires on the bulk-plant or delivery side: register with the board within 90 days of hire, become licensed within one year, and you may only hold one temporary permit every three years. License fee $20.00, background check $21.00.

The four limited licenses

Each is narrow by design.

• Limited Tank Installer. For manufactured housing only, installing outside residential heating oil tanks. Requires holding a manufactured housing mechanic's or dealer's license plus at least four hours of board-approved training on tank installation. $50.00 license, $21.00 background check, $50.00 biennial renewal.
• Limited Wood Pellet Technician. The narrowest license the board issues: cleaning the ash pan, cleaning the burn pot, scraping and cleaning the distribution tubes, emptying fines from the collection box, and cleaning the fan. That closed list is the entire scope. $50.00 license, $21.00 background check, $50.00 biennial renewal.
• Oil Limited Energy Auditor Technician. Combustion safety and efficiency testing on oil-fired heating or water heating equipment only; the license does not permit making adjustments. Requires the Certified Building Analyst 1 certification from the Building Performance Institute, an equivalent Maine program, or equivalent training the board accepts. $50.00 license, $21.00 background check, $50.00 biennial renewal.
• Propane Limited Energy Auditor Technician. The gas-side twin of the auditor license above, same testing scope, same prohibition on adjustments, same Certified Building Analyst 1 requirement. $50.00 license, $21.00 background check, $50.00 biennial renewal.

The Exam: Vendor, Content and Passing Score

Maine contracts examination administration to PROV, Inc., named on the board's homepage, which links PROV's own Candidate Information Bulletin. Every exam is a separate test by license level and authority, every fuel technician exam is delivered open book, and PROV's published fee range runs $65 to $90 depending on the exam.

Per the PROV bulletin the board links (version MOPOR 2025.05.14), the most common entry exam, Journeyman Oil Burner Technician, No. 1 and No. 2 oils up to 15 gallons per hour, runs 105 questions over 3 hours, drawing on NFPA 31 (30 questions), Maine Fuel Board Laws and Rules (28), the Oil Heat Tech Manual (22), General Knowledge (6), the Uniform Plumbing Code (5), NFPA 70 (3), NFPA 211 (3), NFPA 30A (3), NFPA 88A (2), NFPA 90B (2) and Plumbing Law (1); five of the 105 are unscored pilot items. The Master Oil Burner exam at that same authority runs 100 questions in 3 hours; the over-15-gallons-per-hour journeyman and master exams run 75 questions in 3 hours with heavier boiler content; and the journeyman and master solid fuel exams run 80 questions in 3 hours, each with 5 unscored pilot items.

The board's FAQ page confirms a 70% passing score for both journeyman and master oil burner and solid fuel exams. For propane and natural gas, the sequence runs in a fixed order the board states in bold: apply for the exam, get board approval, sit for it, pass it, all before you may even apply for the license, a rule in effect for every applicant since January 1, 2020. The board's rules (Chapter 4, Section 4.13.2) also warn that incomplete applications, including missing CETP certificates or an official PERC transcript, are returned to the applicant.

The board's individual licensing pages, FAQ and homepage do not publish a continuing education requirement for any Fuel Board license, as of this writing. Some third-party guides publish an unsourced CE hour count; confirm directly with the board (fuel.board@maine.gov, (207) 624-8627) before assuming one exists.

How to Apply for a Maine Fuel Board License

1. Pick your license and authority. Match your work to the trigger table above; many Maine companies end up needing more than one license.
2. Meet the experience or education requirement. Apprentice needs none. Journeyman needs a year as apprentice or one of the schooling routes. Master needs four years (oil) or two years (solid fuel). Propane and natural gas technicians complete a board-approved training program instead of logging apprentice time.
3. Collect your documentation. An affidavit from your supervising master verifying your hours, or your training certificate, diploma or transcript if you are claiming a schooling route.
4. Propane and natural gas applicants only: clear the exam first. Apply for the exam, get board approval, sit for it and pass it. You cannot apply for the license itself until that sequence is complete.
5. Oil and solid fuel journeyman and master candidates: register for the PROV exam once your experience or schooling requirement is documented.
6. Pass the exam for your license level and authority. Exams are open book; journeyman and master oil and solid fuel exams require a 70% passing score.
7. File your application through the OPOR online licensing portal (board number 4320), with the license fee and the $21 background check fee.
8. Mark your renewal date. Every license runs two years from your personal first licensure date, not a fixed statewide expiration date.

Want the Application Done for You?

Chasing down an affidavit from a supervising master, confirming which training program the board will actually accept, or getting a propane exam application approved before you can even file for the license itself: this is where Maine Fuel Board applications stall.

The Licensing Company's License Application Processing prepares and submits your Maine Fuel Board license application. The service opens with an eligibility audit before anything is filed, builds a document checklist and works the pieces with you, prepares and reviews every state form line by line, submits it the way the board requires, and answers the board's paperwork questions and resubmits until the board decides.

It is a flat $999 per state application, paid up front. State fees, exam fees, background checks and fingerprinting are paid to the state, not to us.

Call 615-219-2110 or start at License Application Processing. The service does not promise approval, does not promise a timeline, and does not sit the exam for you.

If you cannot yet meet one of the experience routes on your own work history, a licensed master can qualify your company while you build toward your own license. See the qualifier section below for how that works.

Every Fuel Board Fee

Renewal and late fees

• All biennial renewals equal the original license fee; the Temporary Permit does not renew.
• A late renewal up to 90 days past expiration costs a flat $50.00 late fee on top of the renewal, for every license including propane and natural gas technicians.
• More than 90 days late but not more than 2 years for journeyman, master or propane and natural gas technician: the full license fee plus a $100 penalty fee. Apprentices and helpers have no such window; more than 90 days late drops straight to new-applicant requirements.
• More than 2 years late at any level: you file as a new applicant.

All fees are set by the Maine Fuel Board and are subject to change without notice. Verify current amounts with the board before filing.

Bond and Insurance

Unlike many state contractor boards, the Maine Fuel Board does not require a surety bond or a minimum liability insurance amount for any individual license on this list. The only money beyond the license fee is the $21.00 background check charged on every application. If your company also carries a general contractor bid, a plumbing license, or local permitting requirements, those may carry their own bond or insurance rules separate from the Fuel Board.

How Long It Takes

The Fuel Board's individual licensing pages, FAQ and homepage do not publish a target processing time for applications. What is fixed is the exam path: for propane and natural gas, the board must approve your exam application before you can schedule it, and that approval has to land before you can even apply for the license. For oil and solid fuel journeyman and master candidates, your own pace through the apprentice hours or the schooling route sets the clock more than the board's processing does. Call the board at (207) 624-8627 for a current processing estimate before you plan around a specific date.

Renewal and Continuing Education

Every license renews on your personal two-year anniversary, not a fixed statewide date. Renewal under 32 M.R.S. Section 18144 requires a written request and the renewal fee, listed above. The board's individual licensing pages, FAQ and homepage state no continuing education requirement for any Fuel Board license. Confirm directly with the board before assuming one exists; some third-party licensing guides publish an unsourced CE hour count.

What Changes for a Business: The Qualifier

Maine has no company-level HVAC or mechanical license on either board, and no state general or residential contractor license at all. The bill that would have created one, LD 1226 ("An Act to Protect Consumers by Licensing Residential Building Contractors"), passed both chambers in June 2025 but was placed on the Special Appropriations Table over a funding gap of more than $600,000 a year, and it died when the Legislature adjourned without funding it. The Legislature's own bill tracker records the final disposition as "Died On Adjournment, Apr 29, 2026." Treat any source claiming the bill became law as out of date.

So a Maine heating business is legal because of the people on its payroll, not because of a company credential. A master oil burner technician provides the indirect supervision every journeyman on the crew requires. A propane and natural gas technician provides the direct, continuous, on-site supervision every helper requires. Take those individuals away and the licensed work stops.

That is the structural reason Maine heating and mechanical companies end up needing a qualifier. The license is personal, the supervision requirements are personal, and there is no corporate credential to fall back on. If you do not yet have a licensed master or propane and natural gas technician on staff, a qualifying agent can fill that role: a qualifying agent qualifies the company, as an owner or a full time W-2 employee who actually supervises the work, not an arm's-length credential sitting on a wall. In a state where the supervision standard is written as "direct and continuous... on-site," an arrangement that is not a real employee is unworkable on its face.

Hire a Qualifying Agent covers how that placement works.

The plumbing side has its own small overlap worth knowing. Under 32 M.R.S. Section 3302, plumbing by licensed oil burner technicians and propane and natural gas installers is exempt from plumbing licensure, but only for hot and cold water connections to existing piping in the same room where the installation is happening, and never beyond an existing branch connection supplying water. Run a new line across the basement to a new boiler and you are past the exemption and into plumbing licensure; see Plumbing License Maine for that ladder.

The Mini-Split Heat Pump Electrical Exemption

Here is the one documented exception to "the Fuel Board's licenses stop at combustion." A Memorandum of Understanding between the Maine Fuel Board and the Electricians' Examining Board, signed in October 2013 and still posted on the Fuel Board's homepage and its Laws and Rules page, lets a person holding a valid Master or Journeyman Oil Technician license perform defined electrical work on mini-split air source heat pumps without holding an electrician's license.

Specifically, the MOU lets the oil technician:

• Install the electrical conductors, branch circuit, fittings, devices and raceways for the power and control of the mini-split heat pump.
• Install, replace or adjust any motor or control on the dedicated heating branch circuit as required by the National Electrical Code.
• Install the branch circuit overcurrent device, provided panel space is available without disturbing existing wiring and the service or feeder has adequate capacity.
• Install the associated low-voltage wiring, provided its power supply is fed from the heating branch circuit.

What it does not cover. The MOU excludes wiring the outdoor service receptacle, unless that receptacle is designed and listed as an integral part of the required disconnect switch at the outdoor unit. It does not apply to any mini-split unit exceeding 36,000 BTU, and it applies only to one- and two-family dwellings, and existing multi-family dwellings with electric heat. All work must meet NFPA 70 as adopted by the Electricians' Examining Board, and the MOU does not eliminate the ordinary permits a local jurisdiction requires. The MOU itself is explicit that this permission assumes the oil burner technician is competent, through education or experience, in the electrical wiring the heat pump requires; it is a license exemption, not a training substitute.

For a Maine heating company already running a crew of licensed oil technicians, this is the difference between subcontracting the electrical half of every heat pump job and keeping it in-house, within the 36,000 BTU and dwelling-type limits above.

Frequently Asked Questions

Does Maine have an HVAC license? No. There is no Maine HVAC, mechanical, or air conditioning license. The Maine Fuel Board issues ten individual licenses organized by fuel type, and you hold whichever ones match the equipment you work on.

How do I get a gas license in Maine? You complete a board-approved training program, apply for the Propane and Natural Gas Technician exam, get board approval, sit for it and pass it, all before you can apply for the license itself. Once licensed, you choose which of the five authorities (delivery, plant operator, tank setting, appliance connection, or large equipment) to add, based on the work you do.

Do I need a license to install a heat pump in Maine? Not from the Maine Fuel Board for the mechanical and refrigerant work; its licenses cover combustion equipment only. Federal EPA Section 608 certification governs refrigerant handling. A licensed Master or Journeyman Oil Technician may also perform specific electrical work on mini-split heat pumps up to 36,000 BTU under the 2013 Memorandum of Understanding covered above. Confirm local permit requirements with the municipality where the work is happening.

Can I work on my own heating system without a license? Yes, for your own home. Under 32 M.R.S. Section 18104, a person may make an oil, solid fuel, propane or natural gas burning installation in a single-family residence that person occupies or will occupy as a bona fide personal residence, provided the installation meets the board's standards and rules. That exemption covers your own home only, not work for hire.

What is the 500,000 BTU rule? It is the line between two propane and natural gas authorities. Appliance Connection and Service Technician covers appliances and indoor piping up to 500,000 BTUs per appliance; Large Equipment Connection and Service Technician covers over 500,000 BTUs per appliance.

Can I get a master oil burner license without being a journeyman first? No. Master oil burner requires at least four years of licensed experience, with at least two of those four as a licensed journeyman. Master solid fuel is different: two years as a licensed apprentice.

How do I look up or verify a Maine Fuel Board license? The Office of Professional and Occupational Regulation runs a free online license lookup by name, business name or license number, linked from the Fuel Board's homepage. There is no fee to verify a license this way.

Is there continuing education for Maine fuel licenses? No. The board's individual licensing pages, FAQ and homepage list no CE requirement. Confirm with the board before assuming otherwise, since some third-party guides publish an unsourced CE hour count.

Does Maine have HVAC license reciprocity with other states? Not by blanket agreement. The statute instead provides a license by endorsement process (32 M.R.S. Section 18142-A) and requires out-of-state applicants to present satisfactory evidence of equivalent experience (Sections 18132, 18133 and 18135). Confirm your route with the board before filing.

How Much Does an HVAC License Cost in Maine

The board fees are fixed and published above: $20 to $200 depending on the license, plus $21 for the background check, renewed biennially at the same rate. Add the PROV exam fee ($65 to $90) separately, and budget for board-approved training or a community college heating course if you are using an education pathway.

The cost that actually matters to a business is different and is not on any fee schedule: how many of the ten licenses your scope of work requires, whether you need both master oil and gas authorities, whether the water connections you make trigger plumbing licensure, whether the mini-split MOU lets you keep heat pump electrical work in-house, and how long revenue sits still while you or an employee builds the four years of experience master oil burner requires. If you want the paperwork itself handled, see License Application Processing. If you need a licensed master or propane and gas technician on staff now, Hire a Qualifying Agent is where to start.

Sources

• Maine Fuel Board, Individual Licenses (retrieved 2026-10-07)
• Maine Fuel Board homepage (retrieved 2026-10-07)
• Maine Fuel Board FAQ, Oil Burner and Solid Fuel Technicians (retrieved 2026-10-07)
• Maine Fuel Board FAQ, Propane and Natural Gas Technicians and Helpers (retrieved 2026-10-07)
• 32 M.R.S. Section 18104, Exemptions (retrieved 2026-10-07)
• 32 M.R.S. Section 18131, General qualifications (retrieved 2026-10-07)
• 32 M.R.S. Section 18132, Master oil burner technician or solid fuel technician (retrieved 2026-10-07)
• 32 M.R.S. Section 18133, Journeyman oil burner technician or solid fuel technician (retrieved 2026-10-07)
• 32 M.R.S. Section 18135, Propane and natural gas technician (retrieved 2026-10-07)
• 32 M.R.S. Section 3302, Plumbers, Applicability (retrieved 2026-10-07)
• 32 M.R.S. Section 18142-A, Licensure by endorsement (retrieved 2026-10-07)
• 32 M.R.S. Section 18144, Renewals (retrieved 2026-10-07)
• Memorandum of Understanding between the Maine Fuel Board and the Electricians' Examining Board (mini-split heat pumps), Appendix H (retrieved 2026-10-07)
• PROV Candidate Information Bulletin, Maine (MOPOR 2025.05.14) (retrieved 2026-10-07)
• Maine Legislature, LD 1226 bill tracker, 132nd Legislature (retrieved 2026-10-07)
• Fox23 Maine, home contractor regulation bill dies in Augusta again over funding (retrieved 2026-10-07)

Related reading

• Plumbing License Maine, the four-rung plumbing ladder and where it overlaps with fuel work
• How to Get an Electrician License in Maine, the third Maine trade, and the board on the other side of the mini-split MOU
• How to Get a Contractor License, the state-by-state picture
• How to Get an HVAC Contractor License, the national picture
• State Licensing Guides, every state we cover

If your Maine heating or mechanical company needs a licensed master, a propane and gas technician, or help getting the application itself filed correctly, call 615-219-2110, use Hire a Qualifying Agent to talk through a placement, or start at License Application Processing to have the paperwork handled.

License types, fees, supervision standards and scope language in this guide were verified against the Maine Fuel Board's published individual licensing pages, the Maine Revised Statutes, the Fuel Board/Electricians' Examining Board Memorandum of Understanding, the PROV Candidate Information Bulletin and the Maine Legislature's bill tracker, all retrieved October 2026. Board fees are set by the board and change without notice; verify current amounts with the Maine Fuel Board before filing.