Adopts With Amendments
Chapter 13
Energy Efficiency
International Residential Code 2021
[F] 1301.1 Scope
Section 1301.1 — Scope. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] 1301.1.1 Scope of General Mechanical System Requirements
Section 1301.1.1 — Scope of General Mechanical System Requirements. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] 1301.2 Approval of Equipment
Section 1301.2 — Approval of Equipment. 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] 1301.2.1 General Mechanical System Scope
Section 1301.2.1 — General Mechanical System Scope. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] 1301.3 Appliances on Roofs or Elevated Structures
Section 1301.3 — Appliances on Roofs or Elevated Structures. 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] 1302.1 Approval of Appliances
Section 1302.1 — Approval of Appliances. 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] 1302.1.1 Mechanical Equipment Access
Section 1302.1.1 — Mechanical Equipment Access. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 1302.2.1 Equipment Location
Section 1302.2.1 — Equipment Location. 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] 1303.1 General Installation Requirements
Section 1303.1 — General Installation 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] 1303.1.1 Duct Systems
Section 1303.1.1 — Duct Systems. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 1303.2.1 Duct Insulation
Section 1303.2.1 — Duct Insulation. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 1304.1 Equipment Access
Section 1304.1 — Equipment Access. 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] 1304.2 Appliances in Attics
Section 1304.2 — Appliances in Attics. 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] 1304.3 Appliances Under Floors
Section 1304.3 — Appliances Under Floors. 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] 1305.1 Masonry Chimneys
Section 1305.1 — Masonry Chimneys. This section specifies construction material requirements and standards. Refer to the official code for specific material specifications and testing standards. Refer to the official code text for complete requirements.
[F] 1305.2 Factory-Built Chimneys
Section 1305.2 — Factory-Built Chimneys. 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] E3601 General Electrical Services
Section E3601 — General Electrical Services. 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] E3604 Branch Circuits Required
Section E3604 — Branch Circuits Required. 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] E3901 Receptacle Outlets Required
Section E3901 — Receptacle Outlets Required. 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] M1301.1 Mechanical General Scope
Section M1301.1 — Mechanical General Scope. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] M1301.2 Equipment and Appliance Sizing
Section M1301.2 — Equipment and Appliance Sizing. 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] M1301.3 Information Required
Section M1301.3 — Information Required. 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] M1302.1 Approval
Section M1302.1 — Approval. 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] M1302.2 Installation
Section M1302.2 — Installation. 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] M1302.3 Clearance Reduction
Section M1302.3 — Clearance Reduction. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] M1302.4 Return Air Limitations
Section M1302.4 — Return Air Limitations. 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] M1303.1 General
Section M1303.1 — 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] M1303.2 Appliance Location
Section M1303.2 — Appliance Location. 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] M1303.3 Attic and Under-Floor Installations
Section M1303.3 — Attic and Under-Floor Installations. 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] M1303.4 Equipment Selection
Section M1303.4 — Equipment Selection. 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] M1304.1 Clearances to Combustibles
Section M1304.1 — Clearances to Combustibles. 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] M1304.2 Protection from damage
Section M1304.2 — Protection from damage. 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] M1304.3 Outdoor Installation
Section M1304.3 — Outdoor Installation. 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] M1305.1 Appliance access
Section M1305.1 — Appliance access. 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] M1305.1.1 Furnaces and Air Handlers in Attics
Section M1305.1.1 — Furnaces and Air Handlers in Attics. 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] M1305.1.2 Mechanical - Appliances Under Floors
Section M1305.1.2 — Mechanical - Appliances Under Floors. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] M1305.1.3 Appliances in Attics
Section M1305.1.3 — Appliances in Attics. 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] M1305.1.3.1 Electrical Requirements
Section M1305.1.3.1 — Electrical Requirements. 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] M1305.1.4 Appliances Under Floors
Section M1305.1.4 — Appliances Under Floors. 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] M1305.1.4.1 Ground Clearance
Section M1305.1.4.1 — Ground Clearance. 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] M1305.2 Appliances Under Floors
Section M1305.2 — Appliances Under Floors. 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] M1305.3 Attic access
Section M1305.3 — Attic access. 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] M1305.4 Underfloor access
Section M1305.4 — Underfloor access. 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] M1305.5 Attic Access
Section M1305.5 — Attic Access. 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] M1306.1 Condensate Disposal
Section M1306.1 — Condensate Disposal. 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] M1306.2 Reduction of clearances
Section M1306.2 — Reduction of clearances. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] M1306.3 Clearances from Grade
Section M1306.3 — Clearances from Grade. 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] M1307.1 Appliances on floors
Section M1307.1 — Appliances on floors. 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] M1307.2 Appliances in garages
Section M1307.2 — Appliances in garages. 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] M1307.3 Appliances in attics
Section M1307.3 — Appliances in attics. 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] M1307.4 Protection from Physical Damage
Section M1307.4 — Protection from Physical Damage. 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] M1308.1 Mechanical systems in flood hazard areas
Section M1308.1 — Mechanical systems in flood hazard areas. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] M1308.2 Appliance Clearances
Section M1308.2 — Appliance Clearances. 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] M1308.3 Condensate Disposal
Section M1308.3 — Condensate Disposal. 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] M1308.4 Auxiliary Drain Pan
Section M1308.4 — Auxiliary Drain Pan. 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] M1309.1 Equipment on Ground
Section M1309.1 — Equipment on Ground. 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] M1309.2 Equipment in Attics
Section M1309.2 — Equipment in Attics. 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] M1309.3 Equipment in Underfloor Spaces
Section M1309.3 — Equipment in Underfloor Spaces. 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] M1309.4 Vibration Isolation
Section M1309.4 — Vibration Isolation. 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] M1310.1 Electrical Connections
Section M1310.1 — Electrical Connections. 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] M1310.2 Equipment Grounding
Section M1310.2 — Equipment Grounding. 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] M1401 General — Heating and Cooling Equipment
Section M1401 — General — Heating and Cooling Equipment. 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] M1401.1 Heating and Cooling Equipment
Section M1401.1 — Heating and Cooling Equipment. 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] M1401.2 Heating and Cooling Equipment
Section M1401.2 — Heating and Cooling Equipment. 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] M1401.3 Sizing of Equipment
Section M1401.3 — Sizing of Equipment. 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] M1401.4 Anchorage of Appliances
Section M1401.4 — Anchorage of Appliances. 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] M1402.1 General Requirements for Central Furnaces
Section M1402.1 — General Requirements for Central Furnaces. 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] M1402.2 Clearances
Section M1402.2 — Clearances. 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] M1402.3 Furnace Plenums
Section M1402.3 — Furnace Plenums. 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] M1403.1 General - Heat Pump Equipment
Section M1403.1 — General - Heat Pump Equipment. 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] M1403.2 Heat Pump Outdoor Units
Section M1403.2 — Heat Pump Outdoor Units. 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] M1407.1 General - Gas-Fired Unvented Room Heaters
Section M1407.1 — General - Gas-Fired Unvented Room Heaters. This section addresses fire protection and life safety requirements. Specific provisions depend on building type, occupancy, and construction classification. Refer to the official code text for complete requirements.
[F] R1301.1 Scope - General Mechanical System Requirements
Section R1301.1 — Scope - General Mechanical System Requirements. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] R1301.1.1 General Mechanical Requirements
Section R1301.1.1 — General Mechanical Requirements. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] R1301.2 Energy Efficiency General Scope
Section R1301.2 — Energy Efficiency General Scope. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] R1302.1 Equipment Access
Section R1302.1 — Equipment Access. 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] R1303.1 Appliance Location
Section R1303.1 — Appliance Location. 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.