Adopts With Amendments
Chapter 2
Definitions
International Energy Conservation Code 2021
[F] 201.1 General
Section 201.1 — General. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 201.1.1 General Definitions Scope
Section 201.1.1 — General Definitions Scope. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] 201.2 Application
Section 201.2 — Application. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 202.1 General Definitions - Above-Grade Wall
Section 202.1 — General Definitions - Above-Grade Wall. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] 202.1.1 Above-Grade Wall Definition
Section 202.1.1 — Above-Grade Wall Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] 202.1.2 Building Thermal Envelope
Section 202.1.2 — Building Thermal Envelope. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] 202.1.3 Conditioned Space Definition
Section 202.1.3 — Conditioned Space Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] 202.2 General Definitions - Air Barrier
Section 202.2 — General Definitions - Air Barrier. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] 202.3 General Definitions - Automatic
Section 202.3 — General Definitions - Automatic. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] 202.4 General Definitions - Building Thermal Envelope
Section 202.4 — General Definitions - Building Thermal Envelope. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] 202.5 General Definitions - C-Factor
Section 202.5 — General Definitions - C-Factor. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] 202.6 General Definitions - Commercial Building
Section 202.6 — General Definitions - Commercial Building. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] 202.7 General Definitions - Conditioned Space
Section 202.7 — General Definitions - Conditioned Space. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C201.1 General definitions
Section C201.1 — General definitions. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C201.1.1 General Definitions Scope
Section C201.1.1 — General Definitions Scope. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C201.2 Terms Defined in Other Codes
Section C201.2 — Terms Defined in Other Codes. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C201.3 Undefined Terms
Section C201.3 — Undefined Terms. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.1 General Definitions
Section C202.1 — General Definitions. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.1.1 Commercial Building Thermal Envelope Definition
Section C202.1.1 — Commercial Building Thermal Envelope Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.10 Definitions - Continuous Insulation
Section C202.10 — Definitions - Continuous Insulation. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.11 ENERGY RECOVERY VENTILATION SYSTEM
Section C202.11 — ENERGY RECOVERY VENTILATION SYSTEM. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] C202.12 Definitions - Energy Cost
Section C202.12 — Definitions - Energy Cost. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.13 HEATED SLAB
Section C202.13 — HEATED SLAB. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.14 Definitions - Fenestration
Section C202.14 — Definitions - Fenestration. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.15 Definitions - High-Efficacy Lamps
Section C202.15 — Definitions - High-Efficacy Lamps. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.16 INSULATION, CAVITY
Section C202.16 — INSULATION, CAVITY. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] C202.17 Definitions - Insulation
Section C202.17 — Definitions - Insulation. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.18 Definitions - Mechanical Cooling
Section C202.18 — Definitions - Mechanical Cooling. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.19 U-FACTOR
Section C202.19 — U-FACTOR. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.2 Commercial Definitions - C
Section C202.2 — Commercial Definitions - C. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.2.1 Fenestration Definition
Section C202.2.1 — Fenestration Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.20 Definitions - SHGC
Section C202.20 — Definitions - SHGC. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.21 Definitions - U-Factor
Section C202.21 — Definitions - U-Factor. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.22 Above-Grade Wall
Section C202.22 — Above-Grade Wall. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.23 Air Barrier
Section C202.23 — Air Barrier. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.24 Building Thermal Envelope
Section C202.24 — Building Thermal Envelope. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] C202.25 C-Factor
Section C202.25 — C-Factor. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.26 Coefficient of Performance - Cooling
Section C202.26 — Coefficient of Performance - Cooling. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.27 Coefficient of Performance - Heating
Section C202.27 — Coefficient of Performance - Heating. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.28 Commercial Building
Section C202.28 — Commercial Building. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.29 Conditioned Space
Section C202.29 — Conditioned Space. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.3 Conditioned Space - Definition
Section C202.3 — Conditioned Space - Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.3.1 R-Value Definition
Section C202.3.1 — R-Value Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.30 Continuous Insulation
Section C202.30 — Continuous Insulation. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] C202.31 Curtain Wall
Section C202.31 — Curtain Wall. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.32 Demand Control Ventilation
Section C202.32 — Demand Control Ventilation. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] C202.33 Dwelling Unit
Section C202.33 — Dwelling Unit. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.34 Energy Recovery Ventilation System
Section C202.34 — Energy Recovery Ventilation System. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] C202.35 Exterior Wall
Section C202.35 — Exterior Wall. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.36 F-Factor
Section C202.36 — F-Factor. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.37 Fenestration
Section C202.37 — Fenestration. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.38 Thermal Transmittance
Section C202.38 — Thermal Transmittance. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] C202.39 Visible Transmittance (VT)
Section C202.39 — Visible Transmittance (VT). This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.4 Demand Response Definition
Section C202.4 — Demand Response Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.40 Zone
Section C202.40 — Zone. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.41 Thermal Transmittance Definition
Section C202.41 — Thermal Transmittance Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.42 Ventilation Air Definition
Section C202.42 — Ventilation Air Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.43 BUILDING THERMAL ENVELOPE ASSEMBLY
Section C202.43 — BUILDING THERMAL ENVELOPE ASSEMBLY. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] C202.44 CONTINUOUS AIR BARRIER
Section C202.44 — CONTINUOUS AIR BARRIER. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.45 DEMAND RESPONSE
Section C202.45 — DEMAND RESPONSE. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.46 DYNAMIC GLAZING
Section C202.46 — DYNAMIC GLAZING. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.47 ENERGY ANALYSIS
Section C202.47 — ENERGY ANALYSIS. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] C202.48 ENERGY COST
Section C202.48 — ENERGY COST. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] C202.49 ENERGY RECOVERY VENTILATION SYSTEM
Section C202.49 — ENERGY RECOVERY VENTILATION SYSTEM. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] C202.5 Fenestration Definition
Section C202.5 — Fenestration Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.6 CONDITIONED SPACE
Section C202.6 — CONDITIONED SPACE. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] C202.7 Commercial Definitions - R through S
Section C202.7 — Commercial Definitions - R through S. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.8 U-Factor Definition
Section C202.8 — U-Factor Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] C202.9 DEMAND CONTROL VENTILATION
Section C202.9 — DEMAND CONTROL VENTILATION. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] R202.1 Climate Zone
Section R202.1 — Climate Zone. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] R202.10 Insulation Board
Section R202.10 — Insulation Board. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] R202.11 Fenestration Product
Section R202.11 — Fenestration Product. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] R202.12 R-Value
Section R202.12 — R-Value. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] R202.13 Solar Heat Gain Coefficient (SHGC)
Section R202.13 — Solar Heat Gain Coefficient (SHGC). This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] R202.14 Sunroom
Section R202.14 — Sunroom. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] R202.15 Thermal Isolation
Section R202.15 — Thermal Isolation. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] R202.16 U-Factor
Section R202.16 — U-Factor. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] R202.17 Residential Thermal Envelope Definition
Section R202.17 — Residential Thermal Envelope Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] R202.18 Residential Conditioned Space Definition
Section R202.18 — Residential Conditioned Space Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] R202.19 WHOLE-HOUSE MECHANICAL VENTILATION SYSTEM
Section R202.19 — WHOLE-HOUSE MECHANICAL VENTILATION SYSTEM. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] R202.2 Definitions - Residential Conditioned Space
Section R202.2 — Definitions - Residential Conditioned Space. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] R202.20 THERMAL ISOLATION
Section R202.20 — THERMAL ISOLATION. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] R202.21 VAPOR RETARDER CLASS
Section R202.21 — VAPOR RETARDER CLASS. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] R202.3 Definitions - Residential Thermal Envelope
Section R202.3 — Definitions - Residential Thermal Envelope. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] R202.4 Definitions - Residential R-Value
Section R202.4 — Definitions - Residential R-Value. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] R202.5 Definitions - Residential Fenestration
Section R202.5 — Definitions - Residential Fenestration. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] R202.6 Definitions - ERI
Section R202.6 — Definitions - ERI. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
[F] R202.7 Heated Slab
Section R202.7 — Heated Slab. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] R202.8 High-Efficacy Light Source
Section R202.8 — High-Efficacy Light Source. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] R202.9 Infiltration
Section R202.9 — Infiltration. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
Code sections are sourced from the International Code Council (ICC) and NFPA. Refer to ICC Digital Codes or NFPA for the authoritative source documents.