The North Carolina Heating Group 3 Technician Exam is one of the most comprehensive HVAC licensing exams in the state. It covers residential and commercial load calculations, duct design, refrigeration systems, fuel gas compliance, mechanical code, and energy requirements.
This complete book package includes the official references required to properly prepare for the Heating Group 3 Technician examination.
North Carolina Administration Code and Policies, 2018 Edition
North Carolina Fuel Gas Code, 2018 Edition
North Carolina Mechanical Code, 2018 Edition
North Carolina Energy Conservation Code, 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 N β Commercial Load Calculation for Small Commercial Buildings, 5th Edition
Manual Q β Commercial Low Pressure, Low Velocity Duct System Design (1990)
Manual D β Residential Duct Systems (2016, 3rd Edition)
Modern Refrigeration and Air Conditioning, 22nd Edition
Ductulator
The Heating Group 3 Technician exam tests both residential and commercial HVAC knowledge. Questions are drawn directly from:
β Residential and commercial load calculation procedures
β Duct system sizing and layout
β Refrigeration cycle theory and system components
β Fuel gas and mechanical code requirements
β Energy conservation standards
β North Carolina licensing laws and board rules
This is a calculation-intensive, code-based exam that requires strong navigation skills and familiarity with HVAC design principles.
Technicians applying for the North Carolina Heating Group 3 license
HVAC professionals working in both residential and light commercial environments
Candidates advancing from Group 1 or Group 2 certifications
Individuals who want to pass on the first attempt
The exam is open book β but success depends on how quickly and accurately you can locate formulas, charts, and code sections.
This package provides:
The required North Carolina code books
Essential ACCA load calculation and duct design manuals
A comprehensive refrigeration reference
The tools needed to confidently approach technical exam questions
Make sure youβre studying from the correct editions required for testing and walk into your exam fully prepared.