HVAC Contractor License in Massachusetts: Requirements, Qualifier, Bond and Exams
Yes.
Massachusetts licenses HVAC contracting businesses statewide, but there is no single HVAC contractor license.
For refrigeration work, the state issues a Refrigeration Contractor license — Bureau of Pipefitters, Refrigeration Technicians and Sprinkler Fitters, within OPSI; sheet metal businesses are licensed through the Sheet Metal Business License.
The Refrigeration Contractor license requires 100 hours of additional refrigeration training from an approved school, an exam and a $150 application fee, and lets its holder employ licensed people.
Our research found no bond, insurance or renewal rules; ask OPSI.
Verify before you rely on this
At a glance
Yes, split by trade: the business-side Refrigeration Contractor license for refrigeration work and a Sheet Metal Business License for sheet-metal ductwork businesses.
There is no single HVAC contractor license.
The Bureau of Pipefitters, Refrigeration Technicians and Sprinkler Fitters, within the Office of Public Safety and Inspections (OPSI); sheet metal by the Board of Examiners of Sheet Metal Workers.
By trade: Refrigeration Contractor (refrigeration work) and Sheet Metal Business License (ductwork).
Gas piping falls to the Board of State Examiners of Plumbers and Gas Fitters.
The pages we read name no qualifier of record: the license lets its holder employ duly licensed people, and does not state a prerequisite license for the applicant — ask OPSI.
The Refrigeration Contractor application requires an exam plus 100 hours of additional refrigeration training from an approved school.
The application page we read lists no separate business-and-law exam.
Not established in our research — the pages we read list no bond or insurance rules for refrigeration or sheet metal contractors.
Ask OPSI before you rely on that.
$150 non-refundable application fee for the Refrigeration Contractor license ($75 for a Refrigeration Technician application).
A renewal cycle was not captured in our research — ask OPSI.
Not established in our research — we did not find a reciprocity agreement for Massachusetts refrigeration or sheet metal contractor licenses.
Confirm with OPSI.
The Massachusetts HVAC license ladder
- Refrigeration ContractorContractor
Lets the holder keep a regular place of business and employ duly licensed people to perform refrigeration work; it requires 100 hours of additional refrigeration training from an approved school, an exam and a $150 application fee.
- Sheet Metal Business LicenseContractor
The business license for ductwork contractors, issued by the Board of Examiners of Sheet Metal Workers; its requirements were outside our research.
Does Massachusetts license HVAC contractors statewide, or only locally?
Statewide — but not under one HVAC license.
Massachusetts splits HVAC work across state licenses administered by different boards: refrigeration under the Bureau of Pipefitters, Refrigeration Technicians and Sprinkler Fitters, sheet metal and ductwork under the Board of Examiners of Sheet Metal Workers, and gas piping under the Board of State Examiners of Plumbers and Gas Fitters.
On the business side, Massachusetts issues a Refrigeration Contractor license for refrigeration work and licenses sheet metal businesses through the Sheet Metal Business License.
The licenses divide by the work your company contracts for, and a company bidding across several of these trades may answer to more than one board.
“This license allows the holder to have a regular place of business and to employ duly licensed people to perform refrigeration work.”
Which agency issues the license, and what are the classes?
The Refrigeration Contractor license comes from the Bureau of Pipefitters, Refrigeration Technicians and Sprinkler Fitters, a bureau within the Office of Public Safety and Inspections (OPSI) in the Division of Occupational Licensure (DOL).
The pages we read show no job-size classes on the HVAC side: the business licenses divide by trade — Refrigeration Contractor for refrigeration work, and the Sheet Metal Business License the Board of Examiners of Sheet Metal Workers issues to ductwork contractors.
Gas piping work belongs to a third body, the Board of State Examiners of Plumbers and Gas Fitters.
If your company contracts across refrigeration, ductwork and gas piping, expect separate licenses and separate boards.
“The Bureau of Pipefitters, Refrigeration Technicians and Sprinkler Fitters (Bureau) licenses individuals who practice each of these occupations, and it is within the Office of Public Safety and Inspections (OPSI) in the Division of Occupational Licensure (DOL).”
Who can be the qualifier, and what experience do they need?
Massachusetts' refrigeration pages do not name a qualifier of record: the Refrigeration Contractor license itself lets its holder keep a regular place of business and employ duly licensed people, and the application page we read does not state a prerequisite license for the applicant — confirm that with OPSI.
What the state defines is the licensed pool you employ: a Refrigeration Technician applicant needs 6,000 hours working in Massachusetts as a licensed OPSI Refrigeration Apprentice under a Massachusetts Refrigeration Contractor, 450 hours of study at an approved school, a high school diploma or equivalent and Universal CFC (EPA 608) certification, with a $75 application fee.
From November 9, 2026, that pathway is standardized at a Bureau-approved 450-hour course plus at least 6,000 clock hours as a licensed apprentice — adopted November 8, 2024 in 528 CMR 11, with a hardship waiver for the old pathway.
Refrigeration apprentices must hold both an OPSI apprentice license and a Division of Apprentice Standards (DAS) registration, and must be employed by a Massachusetts Refrigeration Contractor throughout the apprenticeship.
Which exams must you pass: trade, and business and law?
The Refrigeration Contractor application requires an exam, alongside the 100 hours of additional refrigeration training from an approved school.
A separate business-and-law exam is not something the application page we read lists — what it lists is 100 hours of additional training from an approved school, an exam and the $150 fee — so treat the business-and-law question as unconfirmed and ask OPSI what the current exam covers.
The contractor page we read does not describe exam logistics.
On the technician side, the Refrigeration Technician application page describes the process for the refrigeration exams OPSI schedules itself: a Notice to Appear by email gives the date, time and location, scores are posted on the OPSI website about a week later, and failing candidates must reapply.
The sheet metal board's business-license requirements, exam included, were outside our research.
What bond and insurance does Massachusetts require?
Our research did not find bond or insurance rules for Massachusetts refrigeration or sheet metal contractors: the requirements our sources list for the Refrigeration Contractor license are the $150 fee, the training hours and the exam, with no bond or insurance amount.
Treat that as a research gap rather than a confirmed no-requirement, and ask OPSI what it currently requires before you contract.
Our research also did not cover Massachusetts' Home Improvement Contractor (HIC) registration for residential work — ask whether it applies to your residential jobs.
What does it cost, and how often is it renewed?
The Refrigeration Contractor application carries a non-refundable $150 application fee, and a Refrigeration Technician application costs $75.
The pages we read do not state a renewal cycle or a continuing-education requirement for the Refrigeration Contractor license, so we cannot tell you how often it renews — that gap is ours, and OPSI's licensing pages are the place to confirm the current cycle and fee.
Does Massachusetts have reciprocity with other states?
Our research did not find a reciprocity agreement covering Massachusetts' refrigeration or sheet metal contractor licenses, so we cannot name partner states.
An out-of-state license is therefore a question for the board that would issue your Massachusetts license: ask OPSI about refrigeration, or the Board of Examiners of Sheet Metal Workers about ductwork, how your license and experience are treated before you plan work in Massachusetts.
What happens if your qualifier leaves?
Massachusetts' refrigeration pages describe a contractor license that lets its holder employ duly licensed people; they do not describe an assigned qualifier of record, and our research did not find a rule — or a deadline — for replacing one after a departure.
The practical exposure is your licensed staff: a Refrigeration Technician license is required for refrigeration work over 10 tons in the aggregate, and those technician licenses are personal credentials, so a departure can idle work even while the business license stands.
Ask OPSI how a staffing change affects a licensee's standing, and recruit licensed technicians before a departure rather than after.
Is there a job-size threshold below which no license is needed?
The threshold in our research attaches to the technician license, not the contractor license: a Refrigeration Technician license is required for anyone performing refrigeration work with a capacity over 10 tons in the aggregate, and per that wording smaller residential air conditioning — 10 tons or less in the aggregate — sits outside that license.
The Refrigeration Contractor page we read sets no dollar job-value threshold; the Sheet Metal Business license's requirements were outside our research.
Confirm with OPSI which side of the 10-ton line your typical contracts fall on.
What This Page Does, and Doesn’t, Cover
This page summarizes the Massachusetts board pages, statutes, rules and other sources listed below, as read for this state-by-state HVAC contractor licensing series, current as of September 2026.
It is not a substitute for the instructions the Office of Public Safety and Inspections (OPSI), Bureau of Pipefitters, Refrigeration Technicians and Sprinkler Fitters publishes.
For the rest of the picture in Massachusetts, see plumbing contractor licensing in Massachusetts and HVAC licensing in Massachusetts.
The HVAC Technician Hiring Market in Massachusetts Right Now
The HVAC technician openings you are competing with, from the 9 active listings on HVACHires as of October 7, 2026.
Employers with the most openings
- Cushman & Wakefield2
- EMCOR2
- JLL2
Benefits listings name
- Dental & Visionnamed in 78%
- Health Insurancenamed in 56%
Source: active HVAC technician listings on HVACHires, updated daily. Pay figures use only listings that state pay (midpoint of each posted range), hourly and yearly counted separately. Benefits count listings that name the benefit; a listing that doesn’t mention one may still offer it.
See the listings →Frequently Asked Questions
Do I need a license to run an HVAC business in Massachusetts?
Massachusetts has no single HVAC contractor license, so it depends on the work.
The state issues a Refrigeration Contractor license for refrigeration work — 100 hours of additional training from an approved school, an exam and a $150 application fee — and licenses sheet metal businesses through the Sheet Metal Business License from the Board of Examiners of Sheet Metal Workers.
Gas piping work belongs to the Board of State Examiners of Plumbers and Gas Fitters.
Ask each board which of your services it covers.
Can my apprentices earn refrigeration hours under my contractor license?
Yes — and they must.
A Massachusetts Refrigeration Apprentice has to hold both an OPSI apprentice license and a registration with the Division of Apprentice Standards (DAS), and must be employed by a Massachusetts Refrigeration Contractor throughout the apprenticeship.
The 6,000 hours a technician applicant documents must be hours as a licensed apprentice under a Massachusetts Refrigeration Contractor, which is why apprentices employed under your contractor license are the pipeline for licensed staff.
What changes for Massachusetts refrigeration licensing on November 9, 2026?
From that date, journeyman pipefitter and refrigeration technician applicants must complete a Bureau-approved 450-hour course and at least 6,000 clock hours as a licensed apprentice — a standardized pathway adopted November 8, 2024 in 528 CMR 11.
A hardship waiver covers the old pathway.
If you are training technicians toward their license, plan their schooling and hours against the new standard.
Does HVAC experience count toward a Massachusetts plumbing license?
No. Massachusetts' plumbing licensing rules say that experience installing HVAC components for heating systems, steam piping and hydronic heat piping is not considered qualifying experience toward the journeyman plumber license.
The rule's wording covers HVAC work on heating systems, steam piping and hydronic heat piping; the plumbing and gas piping licensing track itself belongs to the Board of State Examiners of Plumbers and Gas Fitters.
More Massachusetts Resources
Sources
- Mass.gov: Apply for a Refrigeration Contractor license (retrieved 2026-09-29)
- Mass.gov: Sheet Metal Workers licensing (retrieved 2026-09-29)
- Mass.gov: Refrigeration/Pipefitter apprentice licensure requirements FAQ (retrieved 2026-09-29)
- Mass.gov: Apply for a Refrigeration Technician license (retrieved 2026-09-29)
- Mass.gov: New licensing requirements effective November 9, 2026 (journeyman pipefitters and refrigeration technicians) (retrieved 2026-09-29)
- Mass.gov: 248 CMR — Board of State Examiners of Plumbers and Gas Fitters rules (retrieved 2026-09-29)
Sourced from the documents listed above.
Verified September 2026.
This is career information, not legal advice.
Confirm current rules with the Office of Public Safety and Inspections (OPSI), Bureau of Pipefitters, Refrigeration Technicians and Sprinkler Fitters.