New Jersey Refrigeration License

If you're searching for a standalone refrigeration contractor license in New Jersey, you won't find one. The state integrates refrigeration into the Master HVACR Contractor license — that "R" at the end stands for Refrigeration. One license, one exam process, one board. There's no separate refrigeration-only credential for contractors who install, service, or repair commercial or residential refrigeration systems.

This confuses people because other states split these into separate licenses, and because New Jersey does have a completely different set of stationary engineer licenses (the Blue, Red, and Gold Seals) that cover operating boilers and refrigeration machinery. Those are a different career track with different requirements.

The Master HVACR License Covers Refrigeration

The State Board of Examiners of Heating, Ventilating, Air Conditioning and Refrigeration Contractors licenses one class of professional: the Master HVACR Contractor. The scope of this license explicitly includes refrigeration work — commercial walk-in coolers, industrial process cooling, supermarket rack systems, residential refrigerant-based systems, and everything in between.

The qualification pathways are the same whether you specialize in refrigeration, heating, air conditioning, or all of the above:

• Four-year USDOL-approved apprenticeship plus one year of journeyperson experience, or
• Accredited degree pathway (four-year HVACR degree plus one year, or related science degree plus three years)

Your apprenticeship program must include refrigeration and CFC management coursework — the board specifically checks for this on transcripts. A purely heating-focused trade school certificate won't satisfy the requirement.

The PSI Trade Exam Includes Refrigeration

The Master HVACR Trade Knowledge exam (50 questions, 130 minutes, 70% passing score) covers refrigeration as a core topic area alongside heating, ventilation, electrical, and combustion systems. You'll see questions on refrigeration cycles, hydronic systems, and process piping.

The open-book exam allows the 2021 International Mechanical Code and the ACCA Manual J, both of which contain refrigeration-related content.

EPA Section 608 Is Separate and Also Required

On top of the state Master HVACR license, anyone handling refrigerants must hold an EPA Section 608 certification. This is a federal requirement, not a state one, and it's administered by EPA-approved testing providers — not by the State Board.

For most refrigeration contractors, Universal certification (covering all equipment types) is the practical choice. At minimum, you need Type II (high-pressure systems) or Type III (low-pressure systems) based on the equipment you work on.

The EPA 608 certification doesn't expire, but you need it before you apply for the state license — the board requires proof of certification as part of the application package.

Don't Confuse HVACR Licensing with Boiler Engineer Licenses

New Jersey issues Blue Seal, Red Seal, and Gold Seal stationary engineer licenses through the Department of Labor and Workforce Development. These cover operating and maintaining boilers, pressure vessels, and large refrigeration plants — typically in hospitals, power plants, and industrial facilities.

The key difference: stationary engineer licenses are for operating fixed equipment at a specific facility. The Master HVACR Contractor license is for contracting — installing, servicing, and repairing systems across multiple job sites.

If you're a refrigeration mechanic who installs walk-in coolers at restaurants, you need the HVACR Contractor license. If you're an operating engineer who runs the chiller plant at a hospital, that's the stationary engineer track. Different board, different exams, different career.

Trade Scope Limits for Refrigeration Work

Even with the HVACR license, your refrigeration work has boundaries defined by the board:

• You can connect replacement wiring from an equipment service disconnect to the refrigeration unit, but only up to 30 volts under N.J.S.A. 45:16A-28
• You cannot replace an electrical disconnect box or switch — that requires a licensed electrical contractor
• You can replace combination tankless water heater/hydronic units, but you cannot connect or disconnect domestic water piping — that requires a licensed master plumber

These overlaps trip up contractors who come from states with broader HVACR scopes. In New Jersey, the lines between trades are enforced at the municipal inspection level.

The New Jersey HVAC License Guide covers the full scope boundaries and includes a trade-overlap reference card so you know exactly where HVACR authority ends and electrical or plumbing licensing takes over.

See more New Jersey guides →