Adopts With Amendments
Chapter 3
General Regulations
International Mechanical Code 2021
[F] 301 General HVAC Requirements
Section 301 — General HVAC Requirements. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 301.1 Scope - General regulations
Section 301.1 — Scope - General regulations. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] 301.1.1 Scope of General Regulations
Section 301.1.1 — Scope of General Regulations. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] 301.1.2 Minimum Outdoor Air
Section 301.1.2 — Minimum Outdoor Air. 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] 301.10 Guards
Section 301.10 — Guards. 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] 301.14 Fireblocking
Section 301.14 — Fireblocking. 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] 301.2 Energy Conservation
Section 301.2 — Energy Conservation. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] 301.2.1 Energy Utilization
Section 301.2.1 — Energy Utilization. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] 301.3 Information on Construction Documents
Section 301.3 — Information on Construction Documents. 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] 301.3.1 Listed and Labeled
Section 301.3.1 — Listed and Labeled. 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] 301.4 Flood-Resistant Installation
Section 301.4 — Flood-Resistant 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] 301.5 Vibration Isolation
Section 301.5 — 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] 301.6 Conflicts Between Codes
Section 301.6 — Conflicts Between 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] 301.7 Clearances to Combustibles
Section 301.7 — 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] 301.8 Condensate Pumps
Section 301.8 — Condensate Pumps. 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] 302.1 IMC Approval
Section 302.1 — IMC 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] 302.1.1 Approval of Equipment
Section 302.1.1 — 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] 302.2 Conflicts
Section 302.2 — Conflicts. 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] 302.3 Outdoor Air Filtration
Section 302.3 — Outdoor Air Filtration. 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] 303 Equipment and Appliance Location
Section 303 — Equipment and 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] 303.1 Fuel-Burning Appliances - Clearances
Section 303.1 — Fuel-Burning Appliances - Clearances. This section covers fuel gas piping and equipment requirements. Refer to the official code text for complete requirements.
[F] 303.1.1 Equipment and Appliance Location
Section 303.1.1 — Equipment and 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] 303.2 Clearance Reduction
Section 303.2 — Clearance Reduction. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 303.2.1 Electric Appliance Listing
Section 303.2.1 — Electric Appliance Listing. 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] 303.3 Appliances in Attics
Section 303.3 — 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] 303.4 Rooftop Equipment
Section 303.4 — Rooftop 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] 304.1 General Regulations - Installation
Section 304.1 — General Regulations - 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] 304.1.1 Installation Requirements
Section 304.1.1 — 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] 304.10 Guards
Section 304.10 — Guards. 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] 304.11 Condensate Disposal
Section 304.11 — 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] 304.2 Conflicts
Section 304.2 — Conflicts. 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] 304.2.1 Conflicts
Section 304.2.1 — Conflicts. 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] 304.3 Auxiliary Drain Pans
Section 304.3 — Auxiliary Drain Pans. 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] 304.3.1 Elevation of Ignition Source
Section 304.3.1 — Elevation of Ignition 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] 304.4 Equipment and Appliances on Roofs
Section 304.4 — Equipment and Appliances on Roofs. 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] 304.4.1 Public Garages
Section 304.4.1 — Public 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] 304.5 Equipment on Rooftops
Section 304.5 — Equipment on Rooftops. 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] 304.6 Attic Equipment Installation
Section 304.6 — Attic Equipment 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] 304.7 Under-floor Equipment
Section 304.7 — Under-floor 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] 305.1 Condensate Disposal
Section 305.1 — 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] 305.1.1 Toilet and Bathroom Ventilation
Section 305.1.1 — Toilet and Bathroom Ventilation. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 305.2 Balancing Report
Section 305.2 — Balancing Report. 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] 305.2.1 Sloped Roofs
Section 305.2.1 — Sloped Roofs. 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] 305.3 Breakaway Connections
Section 305.3 — Breakaway Connections. 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] 306.1 Access for Maintenance
Section 306.1 — Access for Maintenance. 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] 306.1.1 Access to Equipment
Section 306.1.1 — Access to 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] 306.2 Appliances in Attics
Section 306.2 — 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] 306.2.1 Clearances
Section 306.2.1 — 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] 306.3 Appliance installation
Section 306.3 — Appliance 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] 306.3.1 Appliances in Attics
Section 306.3.1 — 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] 306.4 Appliances on Roofs
Section 306.4 — Appliances on Roofs. 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] 306.4.1 Appliances Under Floors
Section 306.4.1 — 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] 306.5 IMC Equipment on Roofs
Section 306.5 — IMC Equipment on Roofs. 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] 306.6 Mechanical Access and Working Space
Section 306.6 — Mechanical Access and Working Space. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 307.1 Condensate Disposal
Section 307.1 — 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] 307.1.1 Condensate Disposal
Section 307.1.1 — 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] 307.2 IMC Condensate Drain Pipe
Section 307.2 — IMC Condensate Drain Pipe. 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] 307.2.1 Condensate Drain Piping
Section 307.2.1 — Condensate Drain Piping. 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] 307.2.3 Auxiliary Condensate Drain
Section 307.2.3 — Auxiliary Condensate Drain. 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] 307.3 IMC Auxiliary Drain Pan
Section 307.3 — IMC 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] 307.3.1 Auxiliary Drain Pans
Section 307.3.1 — Auxiliary Drain Pans. 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] 308.1 General Regulations - Clearances
Section 308.1 — General Regulations - 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] 308.1.1 Clearance Reduction Methods
Section 308.1.1 — Clearance Reduction Methods. This section addresses mechanical system requirements including ventilation, ductwork, and equipment specifications. Refer to the official code text for complete requirements.
[F] 309.1 Temperature Control
Section 309.1 — Temperature Control. 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] 309.1.1 Vibration Isolation
Section 309.1.1 — 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] 310.1 Electrical Connections
Section 310.1 — 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] 311.1 Refrigerant Discharge
Section 311.1 — Refrigerant Discharge. 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] 312.1 Testing
Section 312.1 — Testing. 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.