NJ HVAC Contractor study guide
NJ HVAC Contractor · Work through your exam, one topic at a time.
The New Jersey HVAC Contractor credential is a construction-trade license issued through the New Jersey Division of Consumer Affairs, with the technical and business competency requirements administered under the state's contractor licensing framework. It is intended for people who contract with the public to install, alter, repair, or service heating, ventilating, air conditioning, and refrigeration systems, and for those who want to operate as a business rather than only work as a technician. The NJ HVAC Contractor study guide has 9 sections and about 2,457 words.
01Refrigeration Principles, Thermodynamics, and System Components
This domain tests the refrigeration cycle, pressure–temperature relationships, and how each component changes refrigerant state. Expect questions on superheat, subcooling, metering devices, compressors, and diagnosing abnormal readings.
261 words, about 1 min02Heating Systems: Combustion, Furnaces, Boilers, and Hydronics
This domain covers combustion, furnace and boiler operation, hydronic piping, and efficiency. The exam tests excess air, draft, condensing versus non-condensing equipment, and hydronic components.
283 words, about 1 min03Air Conditioning, Heat Pumps, and Refrigerant Systems Installation
Questions focus on installation, evacuation, charging, and heat-pump-specific components. Know how to use superheat and subcooling, and how heat-pump mode changes charging and defrost.
283 words, about 1 min04Air Distribution, Duct Design, and Indoor Air Quality
This domain tests duct sizing, static pressure, airflow, ventilation, and indoor air quality. Expect Manual D concepts, equivalent length, and pressure budget questions.
268 words, about 1 min05Electrical Controls, Motors, and Wiring for HVAC Equipment
Questions cover control circuits, motors, transformers, capacitors, and safe diagnosis. Know Ohm's law, series and parallel circuits, and the difference between line and low voltage.
290 words, about 1 min06Load Calculations, Sizing, and Energy Code Requirements
This domain tests load calculations, equipment selection, airflow, and New Jersey energy-code requirements. The exam expects Manual J, S, and D logic rather than square-foot rules.
267 words, about 1 min07New Jersey Uniform Construction Code and Licensing Regulations
This domain covers the New Jersey Uniform Construction Code, permits, inspections, and HVACR licensing. Questions test who may contract, when a permit is required, and how work is inspected.
272 words, about 1 min08Safety, Fuel Gas Piping, and Environmental Refrigerant Handling
This domain tests jobsite safety, fuel-gas piping, combustion air, and refrigerant handling. Expect code-based questions on gas piping, venting, leak testing, and EPA refrigerant rules.
267 words, about 1 min09Business, Contracts, Estimating, and Project Management
This domain tests contracts, estimates, change orders, and project management under New Jersey consumer rules. Expect questions on written agreements, deposits, overhead and profit, and closeout.
266 words, about 1 min