How Do You Get an HVAC License in District of Columbia?
Yes.
The District of Columbia licenses HVAC work district-wide through the DLCP Board of Industrial Trades, which licenses refrigeration and air-conditioning mechanics individually at apprentice, journeyman and master levels, plus limited versions for equipment at or below 25 compressor horsepower.
Apprentices register with no experience and work only under a licensed master's direct personal supervision; journeyman exam eligibility is 3 years' experience plus EPA CFC Universal certification; masters need at least 5 consecutive years on systems larger than 25 compressor horsepower.
All of the District's refrigeration/AC licenses expire September 30 of even-numbered years.
Verify before you rely on this
At a glance
Yes.
DC licenses refrigeration and air-conditioning mechanics individually at apprentice, journeyman and master levels, with limited versions for equipment at or below 25 compressor horsepower.
The DLCP Board of Industrial Trades.
Apprentice, journeyman and master refrigeration/AC mechanic, with limited versions for work done at 25 horsepower and below; a separate trade contractor license for companies builds on a designated DC-licensed master.
Apprentice: none, but you must show employment verification or school enrollment.
Journeyman exam eligibility: 3 years' experience plus EPA CFC Universal certification.
Master: at least 5 consecutive years immediately before applying, on systems larger than 25 compressor horsepower, verified in writing by a master.
Open book.
Study references named: the International Mechanical Code (2012) and Modern Refrigeration and Air Conditioning (2004).
No testing vendor named in our research — ask the board.
All refrigeration/AC licenses expire September 30 of even-numbered years.
CE hours: not established in our research — ask the board.
Not established in our research for refrigeration/AC licenses — ask the DLCP Board of Industrial Trades.
DLCP's occupational/professional license portal (govservices.dcra.dc.gov/oplaportal) — recorded from DLCP's site navigation, not confirmed by opening the portal.
The District of Columbia HVAC license ladder
- Apprentice Refrigeration and Air-Conditioning MechanicEntry level
The entry rung: no experience is required to register, but you must show employment verification or school enrollment, and you work only under the direct personal supervision of a licensed master mechanic.
- Journeyman Refrigeration and Air-Conditioning MechanicJourneyman
The qualified-worker rung: exam eligibility is 3 years' experience plus EPA CFC Universal certification, and the exam is waived for graduates of a nationally certified apprenticeship.
- Master Refrigeration and Air-Conditioning MechanicMaster
The top individual rung: at least 5 consecutive years immediately before applying spent working on systems larger than 25 compressor horsepower, verified in writing by a master mechanic.
- Limited Master Refrigeration and Air-Conditioning MechanicSpecialty
The master license limited to smaller equipment: 5 years working on systems under 25 compressor horsepower plus CFC certification.
- Refrigeration/Air-Conditioning Trade ContractorContractor
The business license for companies: no exam, but the company must designate a DC-licensed master and post surety bonds of $5,000 (company) and $5,000 (master).
Does District of Columbia require a state HVAC license?
Yes.
The District of Columbia licenses HVAC work district-wide: the DLCP Board of Industrial Trades licenses refrigeration and air-conditioning mechanics individually, at apprentice, journeyman and master levels, with limited versions for work done at 25 horsepower and below.
A separate trade contractor license covers the business layer, built on a designated DC-licensed master.
“Licenses are offered for refrigeration and air-conditioning. Limited licenses are offered for work done at 25 horsepower and below.”
What are the District of Columbia HVAC license levels, and what can each legally do?
The individual ladder runs apprentice, journeyman and master for refrigeration and air-conditioning work, with limited versions of the licenses for work done at 25 horsepower and below.
The supervision rule defines the entry level: an apprentice shall work only under the direct personal supervision and control of a licensed master mechanic.
Journeymen and masters are the District's qualified-worker levels, and the master is also the credential the business layer is built on — a refrigeration/air-conditioning contractor company must designate a DC-licensed master, who is responsible for supervising the work and the people on the company's projects, and the contractor license itself requires no exam.
The sources we read list the levels and their eligibility rules rather than a rung-by-rung scope of practice, so ask the board what a given license allows before you rely on it.
What are the requirements for each level: hours, training, exam and fees?
The apprentice level needs no experience: registration asks for employment verification or school enrollment, and the apprentice then works only under a licensed master's direct personal supervision.
To sit the journeyman exam, the board lists 3 years' experience plus EPA CFC Universal certification; the exam is waived for graduates of a nationally certified apprenticeship — one that includes classroom work as well as 8,000+ hours/4 years of on-the-job training under a master.
The master license asks for at least 5 consecutive years immediately preceding the date of application, spent working on systems larger than 25 compressor horsepower and verified in writing by a master mechanic.
The limited master needs 5 years on systems under 25 horsepower plus CFC certification.
Our research did not find refrigeration/AC license fees in the sources we read — ask the DLCP Board of Industrial Trades before you apply.
“Apprenticeship programs must include classroom work as well as 8,000+ hours/4 years of on-the-job training”
Who gives the District of Columbia HVAC exam, and what is on it?
The board's refrigeration and air-conditioning instruction sheet is the exam document our research rests on: it lists the exams with their eligibility rules and describes them as open book.
The study references it names are the International Mechanical Code (2012) and Modern Refrigeration and Air Conditioning (2004) — named as exam study references, not as a statement of which construction codes the District has adopted.
Our research did not find a named testing vendor for the DC refrigeration/AC exams, so confirm scheduling and content with the DLCP Board of Industrial Trades before you book.
“International Mechanical Code (2012) and Modern Refrigeration and Air Conditioning (2004). The exam is open book.”
How do you renew, and how many CE hours does District of Columbia require?
The renewal clock is fixed: all DC refrigeration/AC licenses — individual and contractor alike — expire September 30 of even-numbered years, regardless of when they were obtained, so plan renewals around that date rather than your own issue date.
Our research did not confirm a continuing-education requirement for DC refrigeration/AC licenses, and it did not turn up renewal fees either.
The DLCP Board of Industrial Trades is the place to check both before your license expires.
Does District of Columbia accept HVAC licenses from other states?
Our research did not find a reciprocity agreement covering DC refrigeration/AC licenses — no partner state appears in the board materials we read.
Treat an out-of-state HVAC license as not transferring automatically, plan to qualify through the District's own apprentice, journeyman or master requirements, and ask the DLCP Board of Industrial Trades what it will credit for your experience or certification before you apply.
How do you look up a District of Columbia HVAC license?
The lookup address our research recorded is DLCP's occupational/professional license portal at govservices.dcra.dc.gov/oplaportal, which DLCP's site lists as the way to verify District occupational licenses, including the trades.
We saw the link in DLCP's site navigation but did not capture the portal page itself, so treat the address as unconfirmed: if it does not load, reach it from dlcp.dc.gov.
If a portal search does not settle a license question, confirm it directly with the Board of Industrial Trades.
What This Page Does, and Doesn’t, Cover
This page summarizes the District of Columbia board pages, statutes, rules and other sources listed below, as read for this state-by-state HVAC licensing series, current as of September 2026.
It is not a substitute for the instructions the DLCP Board of Industrial Trades publishes.
For the rest of the picture in District of Columbia, see plumbing licensing in District of Columbia, HVAC apprenticeships in District of Columbia, HVAC contractor licensing in District of Columbia, and hvac technician pay in District of Columbia.
Frequently Asked Questions
Do you need an HVAC license in Washington, DC?
Yes.
The DLCP Board of Industrial Trades licenses refrigeration and air-conditioning mechanics individually at apprentice, journeyman and master levels, with limited versions for work done at 25 horsepower and below.
The entry point is apprentice registration, which asks for no experience but requires employment verification or school enrollment, and apprentices work only under a licensed master's direct personal supervision.
How do you become a journeyman refrigeration and air-conditioning mechanic in DC?
You need 3 years' experience plus EPA CFC Universal certification to sit the journeyman exam.
The exam is waived if you completed a nationally certified apprenticeship — one that includes classroom work plus 8,000+ hours/4 years of on-the-job training under a master.
Confirm the current eligibility rules with the DLCP Board of Industrial Trades before you apply.
Is EPA 608 certification required for HVAC work in DC?
Keep two credentials apart.
The District's journeyman exam eligibility lists EPA CFC Universal certification, which is the board's own requirement.
Section 608 is EPA's certification for stationary refrigerants, and its Universal certification covers all appliance types described for Types I, II and III.
It is a federal credential, not the District's mechanic license — ask the DLCP Board of Industrial Trades which documentation it accepts.
How much does a DC HVAC license cost?
Our research did not find refrigeration/AC license fees in the sources we read, so there is no verified fee to quote here.
The board's own published instructions are the place to check current application and renewal costs — ask the DLCP Board of Industrial Trades before you pay anything.
When do DC HVAC licenses expire?
All DC refrigeration/AC licenses expire September 30 of even-numbered years, no matter when they were issued; the trade contractor license and its bonds carry the same date.
Our research did not confirm a continuing-education requirement, so check the renewal instructions with the DLCP Board of Industrial Trades before your license expires.
More District of Columbia Resources
Sources
- DLCP Board of Industrial Trades — Refrigeration and Air Conditioning license instructions (retrieved 2026-09-29)
- Code of the District of Columbia — refrigeration and air-conditioning mechanics section (DC Council) (retrieved 2026-09-29)
- DLCP Board of Industrial Trades — Trade Contractor license instructions (retrieved 2026-09-29)
- DLCP Board of Industrial Trades (board page) (retrieved 2026-09-29)
- 40 CFR 82.161 (EPA Section 608 technician certification) (retrieved 2026-09-29)
- EPA: refrigerant sales restriction (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 DLCP Board of Industrial Trades.