The North Carolina Heating Group 3 Class II Contractor Exam is designed for professionals operating at the residential contractor level, overseeing HVAC system installations, load calculations, duct design, and refrigeration compliance within Class II project limitations.
This book package includes the required references for the trade portion of the Heating Group 3 Class II Contractor examination.
North Carolina Administration Code and Policies, 2018 Edition
North Carolina Residential Code, 2018 Edition
NC Boardβs Laws & Rules β 2026 Edition
Manual J β Residential Load Calculations (2016 Reprint, 8th Full Edition)
Manual D β Residential Duct Systems (2016, 3rd Edition)
Modern Refrigeration and Air Conditioning, 22nd Edition
Ductulator
The Heating Group 3 Class II Contractor trade exam focuses heavily on:
β Residential load calculations (Manual J)
β Residential duct system design (Manual D)
β Refrigeration system theory and components
β North Carolina residential code compliance
β State licensing laws and administrative regulations
This exam evaluates your ability to properly size, design, and install residential HVAC systems while maintaining compliance with North Carolina statutes and board rules.
To complete your preparation for the Business & Law portion of the North Carolina contractor exam, you must obtain:
Business & Project Management for Contractors (6th or 7th Edition)
π This book is NOT included in this package.
π It can only be obtained by directly contacting the North Carolina State Licensing Board.
This reference is mandatory for the Business & Law examination and must be secured separately.
Technicians upgrading to Heating Group 3 Class II Contractor status
Residential HVAC professionals starting or expanding their contracting business
Contractors working within Class II project limits
Candidates who want to pass both the trade and business portions of the exam
The exam is open book β but passing depends on how efficiently you can navigate load calculation tables, duct sizing charts, refrigeration principles, and North Carolina code requirements.
With this package, youβll have:
The required North Carolina residential code references
Essential ACCA residential HVAC design manuals
A comprehensive refrigeration reference
The tools needed to confidently approach calculation-based exam questions
Make sure youβre preparing with the correct editions required for testing and walk into your Heating Group 3 Class II Contractor exam ready to succeed.