IFGC Code Hub
The International Fuel Gas Code (IFGC) establishes minimum requirements for fuel gas systems and gas-fired appliances. Use the study tools below to prepare for your exam.
Important Notice
Code requirements vary by jurisdiction. Always verify local amendments and requirements with your local authority having jurisdiction (AHJ).
Practice Tests
IFGC Practice Tests
Timed, randomized questions covering IFGC and journeyman gas code topics.
Flashcards
IFGC Flashcard Decks
Review key IFGC terms, code requirements, and definitions by chapter.
Chapters
IFGC Chapter Index
Browse all 7 IFGC chapters for the 2021 edition.
Study Guide
Gas Piping Systems
- Pipe sizing and capacity calculations
- Materials approved for gas piping
- Joining methods and fittings
- Pressure testing requirements
Appliance Installation
- Clearances from combustibles
- Access and service requirements
- Gas connections and shutoffs
- Electrical requirements
Venting Systems
- Vent categories (I, II, III, IV)
- Direct vent and power vent systems
- Chimney and vent connector requirements
- Combustion air requirements
Safety Controls
- Gas shutoff valve requirements
- Appliance safety controls
- Carbon monoxide detection
- Emergency procedures
Browse IFGC Chapter Index
Open the complete chapter-by-chapter IFGC guide library.
Related Resources
ICC Digital Codes - IFGC
Official CodeOfficial International Code Council digital access to the International Fuel Gas Code.
NFPA 54 - National Fuel Gas Code
Official StandardNFPA standards for fuel gas piping systems, equipment installation, and ventilation.
AGA - American Gas Association
Industry ResourceIndustry resources for natural gas safety, efficiency, and technical standards.