Working as an HVAC contractor in Maryland requires understanding the state's licensing rules, application process, and regulatory authority.

This guide explains whether Maryland requires an HVAC license, the license types available, the governing agency, and how contractors can apply.

Maryland HVAC License Requirements

At a Glance

Requirement	Details
State	Maryland
License Required	Yes
Licensing Authority	Maryland Department of Labor - Board of Heating, Ventilation, Air-Conditioning and Refrigeration Contractors
Licensing Model	Statewide plus local
Last Verified	2026-03-10

Does Maryland Require a State HVAC License?

Yes. Maryland Department of Labor HVACR board resources describe state licensing requirements for HVACR contractor activity. (Source 1, Source 2, Source 3)

Who Regulates HVAC Licensing in Maryland?

• Agency: Maryland Department of Labor, Board of Heating, Ventilation, Air-Conditioning and Refrigeration Contractors
• Authority type: board
• Website: https://www.dllr.state.md.us/license/hvacr/
• Phone: 410-230-6196
• Email: DLOPLHVACR-LABOR@maryland.gov
• Notes: Board resources include licensing law references, applications, and program guidance.

License Types

Master HVACR / Master Restricted HVACR Contractor

• Scope of work: State contractor-level HVACR licensing categories published by Maryland Labor board resources.
• Who needs it: Contractors performing regulated HVACR work at the contractor level.
• Key limitations: Category scope and supervision limits apply.
• Citation(s): Source 1, Source 2

Journeyman / Apprentice HVACR Pathways

• Scope of work: Individual credential pathways associated with state HVACR licensing structure.
• Who needs it: Individuals working under Maryland HVACR credential pathways.
• Key limitations: Does not replace contractor licensing obligations.
• Citation(s): Source 1, Source 3

Experience Requirements

• Minimum experience: Unverified in this pass.
• Education substitutions: Unverified
• Apprenticeship pathway: Unverified
• Documented proof required: Board application pathways require supporting documentation.
• Exceptions: Unverified
• Citation(s): Source 1, Source 2

Exam Requirements

• Exam required: Yes (board exam pathway published)
• Trade exam: Yes
• Business/law exam: Unverified
• Exam provider: PSI Examination Services
• Passing score: Unverified
• Retake policy: Unverified
• Citation(s): Source 10

Application Requirements

• Application form/link: Maryland HVACR board application/resources pages.
• Application fee: Board fee schedule publishes nonrefundable fees (as of July 1, 2025): Master $94.50; Master Restricted $31.50 per area; Limited $94.50; Journeyman $25.00; Journeyman Restricted $25.00 per area; Apprentice $12.00.
• Background check: Unverified
• Insurance requirements: Master, Master Restricted, and Limited Contractor applicants who sign/approve contracts must carry at least $300,000 general liability and $100,000 property damage coverage (combined minimum $400,000).
• Bond requirements: Unverified
• Financial/responsibility requirements: Unverified
• Processing time (if published): Unverified
• Citation(s): Source 9, Source 11

Renewal Requirements

• Renewal cycle: Unverified
• Renewal fee: Unverified
• Continuing education: None required by the Maryland HVACR Board.
• Late renewal/reinstatement: Unverified
• Citation(s): Source 12

Local Licensing Rules

Maryland issues state HVACR credentials and local jurisdictions maintain permitting/inspection overlays. This table is baseline-only.

Key Jurisdictions to Check

Jurisdiction	HVAC License / Registration Status	Official Link	Notes
Baltimore (largest city)	Unverified (Jurisdiction page verified)	https://dhcd.baltimorecity.gov/pi/permits	City permit page is published; HVAC-specific local registration rules should be confirmed directly.
Annapolis (state capital)	Unverified (Jurisdiction page verified)	https://www.annapolis.gov/149/Permits	Official city permit page is published; local HVAC contractor prerequisites require direct confirmation.
Montgomery County	Unverified (Jurisdiction page verified)	https://www.montgomerycountymd.gov/dps/	County permitting resources are published; verify local contractor and permit requirements for HVAC scope.

Reciprocity

• Reciprocity available: Yes.
• With which states/credential pathways: Current reciprocal agreements listed with Delaware and Virginia.
• Conditions/limits: Applicant must meet Maryland law qualifications, hold active equivalent license in good standing, and meet equivalency standards in the originating state.
• Citation(s): Source 13

Important Notes

• Maryland has a state HVACR board credential framework.
• Multiple operational fields were upgraded from Maryland Labor board pages (fees, insurance, CE baseline, reciprocity baseline) in this pass.
• Local permitting requirements still apply by jurisdiction.

Maryland HVAC License FAQ

Do you need an HVAC license in Maryland?

Yes. Maryland requires a state-issued credential, registration, or licensing pathway for at least some contractor-level HVAC work. Review the sections above for license types and application requirements.

Who regulates HVAC licensing in Maryland?

HVAC licensing in Maryland is regulated by Maryland Department of Labor - Board of Heating, Ventilation, Air-Conditioning and Refrigeration Contractors and, where applicable, local jurisdictions or related trade authorities.

What types of HVAC licenses exist in Maryland?

Maryland uses one or more license or registration types depending on project scope, system type, or trade classification. See the License Types section above for details.

How long does it take to get an HVAC license in Maryland?

Processing times vary in Maryland and may depend on application review, exam scheduling, documentation, and local jurisdiction requirements. Review official sources before applying.

Does Maryland offer HVAC license reciprocity?

Maryland publishes reciprocity or reciprocal recognition in at least some cases. Review the Reciprocity section above and confirm eligibility directly with the licensing authority.

HVAC Licensing in Nearby States

• Virginia HVAC License Requirements
• Pennsylvania HVAC License Requirements
• Delaware HVAC License Requirements
• West Virginia HVAC License Requirements

Sources

1. Maryland Department of Labor - HVACR Board Home - https://www.dllr.state.md.us/license/hvacr/ (Accessed: 2026-03-10)
2. Maryland Department of Labor - HVACR licensing law and regulations resources - https://www.dllr.state.md.us/license/hvacr/hvacrlic.shtml (Accessed: 2026-03-10)
3. Maryland Department of Labor - HVACR applications/forms resources - https://www.dllr.state.md.us/license/hvacr/hvacrforms.shtml (Accessed: 2026-03-10)
4. Baltimore City - Permits - https://dhcd.baltimorecity.gov/pi/permits (Accessed: 2026-03-10)
5. City of Annapolis - Permits - https://www.annapolis.gov/149/Permits (Accessed: 2026-03-10)
6. Montgomery County, MD - Department of Permitting Services - https://www.montgomerycountymd.gov/dps/ (Accessed: 2026-03-10)
7. Maryland Department of Labor - Occupational and Professional Licensing home - https://labor.maryland.gov/license/ (Accessed: 2026-03-10)
8. Maryland General Assembly - Statutes portal (Business Regulation title references) - https://mgaleg.maryland.gov/mgawebsite/Laws/StatuteText (Accessed: 2026-03-10)
9. Maryland Labor - HVACR Fees - https://labor.maryland.gov/license/hvacr/hvacraff.shtml (Accessed: 2026-03-10)
10. Maryland Labor - HVACR Taking the Exams (PSI) - https://www.labor.maryland.gov/license/hvacr/hvacrexam.shtml (Accessed: 2026-03-10)
11. Maryland Labor - HVACR Insurance Requirements - https://www.labor.maryland.gov/license/hvacr/hvacrinsreq.shtml (Accessed: 2026-03-10)
12. Maryland Labor - HVACR Education (CE) - https://www.labor.maryland.gov/license/hvacr/hvacreduc.shtml (Accessed: 2026-03-10)
13. Maryland Labor - HVACR Reciprocal License - https://labor.maryland.gov/license/hvacr/hvacrrecip.shtml (Accessed: 2026-03-10)

Disclaimer

Requirements can change. Confirm current licensing rules with the official authority before applying, testing, bidding, contracting, or performing HVAC work.