Adopts With Amendments
Chapter 4
Commercial and Residential Energy Efficiency
International Energy Conservation Code 2024
[F] C401.1 Scope - Commercial
Section C401.1 — Scope - Commercial. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] C401.2 Application
Section C401.2 — 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] C401.2-CA California Energy Code Requirements
AMENDED
Section C401.2-CA — California Energy Code Requirements. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] C402.1 General (Opaque Thermal Envelope)
AMENDED
Section C402.1 — General (Opaque 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] C402.1-CA Enhanced Envelope Requirements (California Amendment)
AMENDED
Section C402.1-CA — Enhanced Envelope Requirements (California Amendment). This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] C402.1-NY NYC Envelope Requirements (New York Amendment)
AMENDED
Section C402.1-NY — NYC Envelope Requirements (New York Amendment). This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] C402.1.3 Insulation of Building Envelope - Opaque Areas
Section C402.1.3 — Insulation of Building Envelope - Opaque Areas. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] C402.2 Specific Insulation Requirements (Prescriptive)
AMENDED
Section C402.2 — Specific Insulation Requirements (Prescriptive). This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] C402.4 Fenestration Requirements
Section C402.4 — Fenestration Requirements. 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] C402.5 Air Leakage - Thermal Envelope
Section C402.5 — Air Leakage - 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] C403.1 Mechanical Systems - General
Section C403.1 — Mechanical Systems - General. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] C403.3 HVAC Equipment Performance
Section C403.3 — HVAC Equipment Performance. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] C403.4 HVAC System Controls
Section C403.4 — HVAC System Controls. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] C403.7 Duct and Plenum Insulation
Section C403.7 — Duct and Plenum Insulation. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] C403.8 Piping Insulation
Section C403.8 — Piping Insulation. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] C404.1 Service Water Heating
Section C404.1 — Service Water Heating. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] C404.5 Hot Water Pipe Insulation
Section C404.5 — Hot Water Pipe Insulation. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] C405.1 General (Electrical Power and Lighting Systems)
AMENDED
Section C405.1 — General (Electrical Power and Lighting Systems). This section covers electrical installation requirements. Specific conductor sizing, circuit protection, and installation methods are in the official code. Refer to the official code text for complete requirements.
[F] C405.1-CA Solar Ready Requirements (California Amendment)
AMENDED
Section C405.1-CA — Solar Ready Requirements (California Amendment). This is a local jurisdiction amendment that modifies the base code requirements. Check the amendment details for specific changes applicable to your project location. Refer to the official code text for complete requirements.
[F] C405.2 Lighting Controls
Section C405.2 — Lighting Controls. 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] C405.2-NY NYC Lighting Controls (New York Amendment)
AMENDED
Section C405.2-NY — NYC Lighting Controls (New York Amendment). This is a local jurisdiction amendment that modifies the base code requirements. Check the amendment details for specific changes applicable to your project location. Refer to the official code text for complete requirements.
[F] C405.3 Interior Lighting Power Allowance
Section C405.3 — Interior Lighting Power Allowance. 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] C405.4 Exterior Lighting Power
Section C405.4 — Exterior Lighting Power. 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] C406.1 Additional Energy Efficiency Package Options
Section C406.1 — Additional Energy Efficiency Package Options. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] C407.1 Total Building Performance
Section C407.1 — Total Building Performance. 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] R401.1 Scope - Residential
Section R401.1 — Scope - Residential. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] R401.2 Compliance - Residential
Section R401.2 — Compliance - Residential. 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] R402.1 General Insulation Requirements
Section R402.1 — General Insulation Requirements. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] R402.1-FL Florida Envelope Requirements (Florida Amendment)
AMENDED
Section R402.1-FL — Florida Envelope Requirements (Florida Amendment). This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] R402.1-TX Texas Envelope Requirements (Texas Amendment)
AMENDED
Section R402.1-TX — Texas Envelope Requirements (Texas Amendment). This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] R402.1.2 Insulation and Fenestration Requirements
Section R402.1.2 — Insulation and Fenestration Requirements. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] R402.2 Specific Insulation - Residential
Section R402.2 — Specific Insulation - Residential. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] R402.4 Air Leakage - Residential
Section R402.4 — Air Leakage - Residential. 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] R402.4-CA Blower Door Testing (California Amendment)
AMENDED
Section R402.4-CA — Blower Door Testing (California Amendment). This is a local jurisdiction amendment that modifies the base code requirements. Check the amendment details for specific changes applicable to your project location. Refer to the official code text for complete requirements.
[F] R402.4-FL Air Leakage Florida (Florida Amendment)
AMENDED
Section R402.4-FL — Air Leakage Florida (Florida Amendment). This is a local jurisdiction amendment that modifies the base code requirements. Check the amendment details for specific changes applicable to your project location. Refer to the official code text for complete requirements.
[F] R403.1 Controls - Residential
Section R403.1 — Controls - Residential. 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] R403.3 Ducts - Residential
Section R403.3 — Ducts - Residential. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] R403.5 Mechanical Ventilation - Residential
Section R403.5 — Mechanical Ventilation - Residential. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] R403.6 Equipment Sizing - Residential
Section R403.6 — Equipment Sizing - Residential. 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] R404.1 Lighting - Residential
Section R404.1 — Lighting - Residential. 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] R405.1 Simulated Performance Alternative
Section R405.1 — Simulated Performance Alternative. 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.