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District of Columbia rules
Do HVAC contractors need a license in District of Columbia?
How District of Columbia licenses HVAC work
HVAC contractors are licensed by the state.
Who licenses: District of Columbia Department of Licensing and Consumer Protection (DLCP), Board of Industrial Trades
License types: Refrigeration/Air Conditioning Contractor, Refrigeration/Air Conditioning Contractor (Limited), Refrigeration/Air Conditioning Master Mechanic, Refrigeration/Air Conditioning Master Mechanic (Limited), Refrigeration/Air Conditioning Journeyman Mechanic, Refrigeration/Air Conditioning Apprentice Mechanic.
Companies: The District licenses refrigeration and air conditioning work through the Board of Industrial Trades, which regulates refrigeration and air conditioning mechanics under D.C. Code Title 47, Chapter 28, Subchapter I (Part Q, 47-2853.201 and following). A refrigeration and air conditioning mechanic is a person who designs, installs, maintains or alters mechanical systems for refrigeration or air conditioning (47-2853.201). DLCP lists apprentice, journeyman, master and contractor categories, each with a limited version for equipment at or below 25 compressor horsepower. Master mechanic eligibility requires five consecutive years of experience (47-2853.202), and the DLCP bond form for the refrigeration and air conditioning contractor or designated master is a $5,000 bond. We did not find a DLCP page that states the exact scope of the contractor license, and we could not read the section of the code that makes unlicensed work unlawful, so confirm the details with DLCP.
Local rules: The District is a single jurisdiction, so licensing is handled by DLCP rather than by separate city or county offices. We could not confirm whether a separate DLCP business license or building permit is also required for HVAC jobs.
Check a license: govservices.dcra.dc.gov
Search the company and the master mechanic on the DLCP occupational and professional license portal and confirm there is an active refrigeration and air conditioning contractor or master license before you sign.
Federal rule: in every state, technicians who handle refrigerant must hold EPA Section 608 certification, whatever the state or city requires.
We could not confirm every detail from District of Columbia’s own sources, so treat this as a starting point and check with the agency.
Sources: dlcp.dc.gov, dlcp.dc.gov, dlcp.dc.gov, dlcp.dc.gov. Checked October 2026 from official sources. This is not legal advice.
Before you hire
Ask for the license number and check it on the official lookup where one exists. Ask for proof of insurance and a written, itemized estimate, and ask who pulls the permit if the job needs one – a new furnace, heat pump or air conditioner usually does.
Questions
District of Columbia HVAC questions
Do HVAC contractors need a license in District of Columbia?
District of Columbia licenses HVAC contractors statewide through the District of Columbia Department of Licensing and Consumer Protection (DLCP), Board of Industrial Trades. You can check a license at govservices.dcra.dc.gov.
Where in District of Columbia do you list HVAC companies?
In District of Columbia: Washington (26). Each city page lists companies based within about 25 miles – 35 in smaller metro areas – whose own website names that city or nearby towns.
Do technicians need EPA certification?
Yes, in every state: federal rules require technicians who handle refrigerant to hold EPA Section 608 certification. A state or city license is a separate requirement.
How do I get an HVAC company listed in District of Columbia?
HVAC companies can add their business free. We check every listing against the business’s own website.
Request an HVAC company
Ask us to find an HVAC company in District of Columbia
Tell us the job and your ZIP code. We pass it to listed companies that serve your area.
No heat in freezing weather, or no cooling in dangerous heat? Call a company from the list that says it takes emergency calls – a form is not fast enough. If you smell gas or a carbon monoxide alarm sounds, leave first and call 911 or your gas utility from outside.