Red Seal License

To get a Red Seal License, the New Jersey Department of Labor and Workforce Development requires you to have a Blue Seal boiler Engineer’s license for a period of at least one year and show experience on equipment that is over 1,000 boiler horsepower. Equipment must be high-pressure boiler equipment, which means the boilers must be over 15 psi for steam and over 160 PSI for hot water. Prime movers 100 hp up to 300 hp require a red seal license. See NJ code for Red Seal (12:90-8.11).

The Red Seal License application will require management endorsement and one engineer’s endorsement (personnel with a Blue, Red, or Gold Seal license). Out-of-state and Navy personnel can obtain a license, provided they have worked at least two years in a plant over 1,000 horsepower. However, the state would require a letter of endorsement from the company signed by management. This letter would state the boiler horsepower, all the information needed about the equipment, and the length of time you have operated the boilers. These applications must be approved on a case-by-case situation. An applicant can skip the Black Seal license with the necessary background to state requirements.

The Red Seal application also requires your boiler experience information, which can be found on boiler state inspection certificates located in your boiler room, framed behind glass.

The Red Seal license exam consists of a 50 question multiple-choice test, and the passing score required is 70% and above.

Although our boiler license courses are fully online, the State of New Jersey requires all license tests be completed in person at a state-approved testing site.

NJ State Exam Sites

The Red Seal Stationary Engineer License curriculum is designed for operators managing high-capacity plants and advanced boiler systems. Training combines technical instruction with exam preparation, equipping students with the knowledge required to meet New Jersey licensing standards. Each module builds both practical expertise and test readiness for this senior-level credential.

Course Module	Description of Training
Orientation & Program Overview	Introduces the course format, application process, and licensing steps. Students also review boiler room fundamentals, plant piping, and instrumentation basics as a foundation for more advanced study.
Regulations & Safety Standards	Focuses on New Jersey Administrative Code and national safety rules. Lessons emphasize operator responsibilities, plant documentation, and compliance requirements that govern safe boiler operation.
Plant Systems & Equipment	Explores the key systems in stationary engineering, including boilers, auxiliaries, and integrated plant operations. Instruction highlights efficiency, reliability, and the practices needed for smooth daily operation.
Steam Systems & Superheaters	Reviews the generation, distribution, and application of steam. Students study steam quality, heat transfer, and how superheaters enhance both safety and plant performance.
Engineering Math & Efficiency	Covers essential formulas and calculations for stationary engineers. Students practice efficiency equations and applied problem-solving methods to support real-world operations and exam preparation.
Safety Devices & Pressure Controls	Details the operation of safety valves and pressure control devices. Training emphasizes their role in preventing unsafe conditions and protecting high-pressure systems.
Final Review & Exam Preparation	This final section ties together all previous topics while reinforcing regulatory compliance. Students work through practice scenarios and test simulations, ensuring readiness for the Red Seal licensing exam.