HVAC · State license
How to get licensed for heating and HVAC work in Maine
State law and licensing-board sources · Last reviewed October 11, 2026
Maine licenses heating work by fuel. Anyone who installs or services oil, solid fuel (wood, pellets, coal), propane or natural gas burning equipment needs a license from the Maine Fuel Board. Oil burner technicians climb from apprentice to journeyman (after a year as an apprentice, or less with school) to master. For mini-split heat pumps, state guidance says the license required by law is for the wiring, which needs a licensed electrician or oil burner technician. [1][2][3][4]
New to the trade?
Starting from zero in Maine
Get hired by a heating company and have a licensed master oil burner technician sign a Certificate of Supervision, then apply online for an apprentice oil burner technician license (no test). If the company works with propane or natural gas, the matching starter license is propane and natural gas helper. For air conditioning and heat pumps, you'll also want the federal EPA 608 refrigerant certification. [4][7][11][12][14][19]
High school diploma or GED
Not listed in Maine's fuel licensing law or the board's rules for an apprentice: you need a completed application, a Certificate of Supervision from a supervising master and the fee. Apprenticeship sponsors can set their own entry rules We didn't find a published diploma rule from a Maine heating apprenticeship. [12][14]
Helper jobs
An apprentice oil burner technician must work under the direct supervision of a journeyman or master oil burner technician while installing, altering or repairing equipment, but may bleed an oil burner alone and clean equipment alone after 160 hours of approved training or a year of supervised work. A journeyman may supervise at most two apprentices at once. A propane and natural gas helper works under the direct, on-site supervision of a licensed technician. [8][14][18]
EPA 608 certification
A federal requirement: technicians who maintain, service, repair or dispose of equipment that could release ozone-depleting refrigerants into the atmosphere must be EPA-certified. For mini-split heat pumps that aren't factory-charged, the installer needs at least the small-appliance level. [4][7]
Pay while you learn
Maine's apprenticeship law requires registered programs to pay rising wages, starting at no less than 50% of the journeyman rate for adult registered apprentices, with at least 144 classroom hours a year. [23]
Credit for school
A board-approved oil burner course of at least 160 hours (75 in the lab) cuts the apprentice time before the journeyman exam from one year to six months. A one-year heating program of at least 320 hours at a Maine community college lets you take the exam without apprentice time. Propane and natural gas technicians qualify through a national propane association training program or a board-approved course. [2][9][12]
Still in high school?
Maine has 27 career and technical education (CTE) centers and regions open to all high school students (Maine DOE CTE schools list). The fuel law counts a board-approved oil burner course at a CTE center or region (160 hours) toward the journeyman exam, and a board-approved propane or natural gas course at a CTE center toward the technician license. Pre-apprenticeship programs listed by the Maine Apprenticeship Program are for people 16 and older, and some CTE programs link to Maine community college programs for dual or escrow college credit. [2][9][24][25][26][27]
Where to apply in MaineHow to get an apprenticeshipHelper jobs
Licensing office Maine Fuel Board, Office of Professional and Occupational Regulation · (207) 624-8627 [17]
Maine HVAC license at a glance
- Who issues licenses
- Maine Fuel Board Office of Professional and Occupational Regulation [17]
- Starter licenses
- Apprentice oil burner and/or solid fuel technician ($40) or propane and natural gas helper ($20), plus $21 background check No exam [14]
- Journeyman experience
- 1 year as a licensed apprentice Or 6 months plus a 160-hour course; or a 320-hour one-year community college heating course [2]
- Master experience
- 4 years of licensed experience, at least 2 of them as a journeyman [3]
- Fees
- Journeyman $100, master $200, propane and natural gas technician $100, per 2-year license [14]
On this page
The license pathway in Maine
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1
Apprentice oil burner and/or solid fuel technician
- $40 license, $21 background check
- Every 2 years; $40
Your starting license. You assist with installing, repairing and servicing equipment under the direct supervision of a journeyman or master, with a supervising master who has signed a Certificate of Supervision on file with the board. [8][12][14][18]
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2
Journeyman oil burner and/or solid fuel technician
- 1 year of experience
- Optional: a 160-hour board-approved course (cuts apprentice time to 6 months) or a 320-hour one-year community college course (replaces it)
- Yes, open book, 70% to pass, at Prov; 1 and 2 oils up to 15 gph: 105 questions (5 unscored) in 3 hours, $90
- $100 license, $21 background check
- Every 2 years; $100
Installs, cleans, services and repairs oil (or solid fuel) burning equipment under the indirect supervision of, or employed by, a master. You need one year as a licensed apprentice, or one of the school routes, and the exam for each license authority (fuel type) you want. [2][12][13][14]
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3
Master oil burner and/or solid fuel technician
- 4 years of experience
- Yes, 70% to pass, at Prov
- $200 license, $21 background check
- Every 2 years; $200
Can install and service oil (or solid fuel) equipment on their own and supervise journeymen and apprentices. You need four years of licensed experience, with at least two as a journeyman. A master solid fuel technician needs two years as an apprentice solid fuel technician. [3][12][14]
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4
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5
Propane and natural gas technician
- A national propane association training program or a board-approved course
- Yes, one per authority, at Prov ($90 each)
- $100 license, $21 background check
- Every 2 years; $100
Holds one or more authorities, such as appliance connection and service (up to 500,000 BTUs per appliance), large equipment, tank setting and outside piping, delivery, or plant operation. [9][13][14]
Who needs a license
Maine law says a person who installs or services solid fuel burning equipment (including pellet-fired central heating), or oil, propane or natural gas burning equipment, must be licensed by the Maine Fuel Board. Exceptions include licensed electricians doing the electrical part, licensed plumbers doing plumbing, and a person working on the single-family home they live in, if the work meets board rules.
Mechanics who install air-handling equipment, sheet metal and similar parts of a heating system don't need a fuel license, but the work must be supervised by a master oil burner technician or propane and natural gas technician who is responsible for the installation. [1][5]
Heat pumps and air conditioning
State guidance on mini-split heat pumps (2013) says the license required by state law covers the electrical part of the installation:
- Any size, any building: a master electrician (or a journeyman working for one), or a limited electrician in refrigeration. A limited electrician in house wiring may install them in one- and two-family homes.
- Units under 36,000 BTU in one- and two-family homes (and existing multifamily buildings with electric heat): also a master or journeyman oil burner technician, under an agreement between the Fuel Board and the Electricians' Examining Board.
- A general contractor may install the system parts but not the wiring.
If the system isn't charged with refrigerant at the factory, the installer also needs EPA 608 refrigerant certification (small appliance level or higher). See the Maine electrician license page for the electrical route. [4][6][7]
The license ladder
Oil and solid fuel:
- Apprentice. Starter license, no exam.
- Journeyman. One year as an apprentice (or six months plus a 160-hour course, or a 320-hour community college program), plus the exam.
- Master. Four years licensed, two as a journeyman, plus the exam.
Oil licenses come in "authorities" by fuel and burner size, such as #1 and #2 oils up to 15 gallons per hour, #1 and #2 oils over 15 gallons per hour, and #4, #5 and #6 oils. You take a separate exam for each.
Propane and natural gas:
- Helper. Starter license, no exam.
- Technician. A training program plus an exam for each authority (appliance connection and service, large equipment, tank setting and outside piping, delivery, plant operation).
More: journeyman vs. master. [2][3][8][9][10][11][12]
The exam
You apply to the Fuel Board first; once approved, you schedule with Prov. All fuel technician exams are open book and need 70%.
The journeyman 1 and 2 oils (up to 15 gph) exam has 105 questions (5 unscored) in 3 hours. It draws on an oil heat technician manual, the Fuel Board's laws and rules, NFPA 31 (oil-burning equipment) and other codes. Most oil and propane exams cost $90; solid fuel exams cost $65. [12][13]
Fees and renewal
- Apprentice: $40 every two years.
- Propane and natural gas helper: $20 every two years.
- Journeyman: $100 every two years.
- Master: $200 every two years.
- Propane and natural gas technician: $100 every two years.
- First license: add a $21 criminal background check.
A $50 late fee applies to late renewals. Apprentices and helpers who are more than 90 days late must reapply as new applicants. [12][14]
If you're licensed in another state
Maine's fuel law asks out-of-state applicants for journeyman and master licenses to show the board satisfactory evidence of their experience; you still need to pass the exam. We didn't find any published reciprocity agreements. Maine's licensure-by-endorsement law directs each board to set up a process for applicants from states with substantially equivalent requirements. Ask the Fuel Board at (207) 624-8627. See license reciprocity. [2][3][15][16][17]
Steps to get licensed in Maine
Get hired and licensed as an apprentice
With a supervising master's Certificate of Supervision, apply for the apprentice license in the board's online licensing system: $40 plus a $21 background check. [12][14]
Get one year of licensed experience, or take a course
Work a year as a licensed apprentice, or six months plus a 160-hour board-approved course, or complete a one-year, 320-hour community college heating course. [2]
Apply for the journeyman exam
Send the exam application with a signed affidavit of your supervised experience and any school certificates or transcripts. Wait for board approval before scheduling. [11][12]
Pass the Prov exam
Fuel technician exams are open book; you need 70%. The 1 and 2 oils (up to 15 gph) journeyman exam has 105 questions in 3 hours and costs $90. [12][13]
Apply for your journeyman license
Starting 24 hours after you pass, apply online with a Certificate of Supervision and pay $100 plus the $21 background check. [11][12][14]
Where to get the hours
Programs that train HVAC technicians in or for Maine, from their own official pages. Listed by type, not ranked.
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State program
The Maine Department of Labor's registered apprenticeship office. Its searchable map lists active apprenticeships, including heating and ventilation employers, and pre-apprenticeship programs. [20][21]
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Other
You can start as a licensed apprentice with any heating company that has a master oil burner technician; your supervising master signs a Certificate of Supervision that the board keeps on file. [12][14][18]
Licensed in another state?
All licenses
We found no published reciprocity agreements for Maine fuel licenses. Out-of-state applicants must show the board satisfactory evidence of experience. Maine's licensure-by-endorsement law also directs the board to license people from states with substantially equivalent requirements; ask the board how it applies. [2][3][15][16]
Also listed by: Vermont (their own boards list Maine as a partner; check both sides before you move).
Questions people ask
Does Maine have an HVAC license?
Maine licenses heating work by fuel through the Maine Fuel Board (oil, solid fuel, propane and natural gas technicians). For mini-split heat pumps, state guidance says the required license is for the wiring, which needs a licensed electrician or a master or journeyman oil burner technician. Refrigerant work also needs federal EPA 608 certification. [1][4][7]
Sources (27)
- 32 M.R.S. §18102. License required, Maine Legislature, Office of the Revisor of Statutes. Accessed October 11, 2026.
- 32 M.R.S. §18133. Journeyman oil burner technician or solid fuel technician, Maine Legislature, Office of the Revisor of Statutes. Accessed October 11, 2026.
- 32 M.R.S. §18132. Master oil burner technician or solid fuel technician, Maine Legislature, Office of the Revisor of Statutes. Accessed October 11, 2026.
- Consumer Information about the Electrical Installation for Mini-Split Heat Pumps (10/2013), Maine Office of Professional and Occupational Regulation. Accessed October 11, 2026.
- 32 M.R.S. §18104. Exceptions, Maine Legislature, Office of the Revisor of Statutes. Accessed October 11, 2026.
- Memorandum of Understanding between the Maine Fuel Board and the Electricians' Examining Board for the Installation of Mini-Split Heat Pumps, Maine Fuel Board and Electricians' Examining Board. Accessed October 11, 2026.
- Section 608 Technician Certification, U.S. Environmental Protection Agency. Accessed October 11, 2026.
- 32 M.R.S. §18134. Apprentice oil and solid fuel burning technician, Maine Legislature, Office of the Revisor of Statutes. Accessed October 11, 2026.
- 32 M.R.S. §18135. Propane and natural gas technician, Maine Legislature, Office of the Revisor of Statutes. Accessed October 11, 2026.
- 32 M.R.S. §18136. Propane and natural gas helper, Maine Legislature, Office of the Revisor of Statutes. Accessed October 11, 2026.
- Maine Fuel Board - FAQ - Oil Burner & Solid Fuel Technicians (Apprentice, Journeyman, Master), Maine Office of Professional and Occupational Regulation. Accessed October 11, 2026.
- 02-658 Chapter 4: Qualifications for Examination and Licensure, Maine Fuel Board (Secretary of State rules site). Accessed October 11, 2026.
- State of Maine Office of Professional and Occupational Regulation Candidate Information Bulletin (MOPOR-2025.05.14), Prov, Inc. for the Maine Office of Professional and Occupational Regulation. Accessed October 11, 2026.
- Maine Fuel Board - Licensing - Individual Licenses, Maine Office of Professional and Occupational Regulation. Accessed October 11, 2026.
- 32 M.R.S. §18142-A. Licensure by endorsement, Maine Legislature, Office of the Revisor of Statutes. Accessed October 11, 2026.
- 10 M.R.S. §8003-H. Licensure by endorsement, Maine Legislature, Office of the Revisor of Statutes. Accessed October 11, 2026.
- Maine Fuel Board - Contact Us, Maine Office of Professional and Occupational Regulation. Accessed October 11, 2026.
- 02-658 Chapter 3: Categories and Responsibilities of Licensure, Maine Fuel Board (Secretary of State rules site). Accessed October 11, 2026.
- Maine Fuel Board - FAQ - Propane & Natural Gas Technicians and Helpers, Maine Office of Professional and Occupational Regulation. Accessed October 11, 2026.
- Maine Apprenticeship Program, Maine Department of Labor. Accessed October 11, 2026.
- Maine Apprenticeship Program: For Career Seekers, Maine Department of Labor. Accessed October 11, 2026.
- 26 M.R.S. §3201. Definitions (registered apprenticeship), Maine Legislature, Office of the Revisor of Statutes. Accessed October 11, 2026.
- 26 M.R.S. §3203. Standards of apprenticeship, Maine Legislature, Office of the Revisor of Statutes. Accessed October 11, 2026.
- Career and Technical Education, Maine Department of Education. Accessed October 11, 2026.
- Career and Technical Education: Schools & Programs, Maine Department of Education. Accessed October 11, 2026.
- Maine Apprenticeship Program: For Parents, Guardians, and Guidance Counselors, Maine Department of Labor. Accessed October 11, 2026.
- Maine Career & Technical Education FAQ, Maine Department of Education. Accessed October 11, 2026.