Adoption Info of Alabama Mechanical Code 2009
- International Mechanical Code (IMC) 2009 with Alabama-specific amendments (applicable in jurisdictions that adopt it)
Effective Dates
- January 1, 2009 – Present (varies by jurisdiction within Alabama)
Adopts with Amendments
- International Mechanical Code (IMC) 2009
Scope
- The Alabama Mechanical Code 2009 provides minimum standards for the design, installation, and maintenance of mechanical systems in residential, commercial, and industrial buildings. This code includes requirements for HVAC systems, refrigeration, ventilation, and exhaust to ensure safe, efficient, and reliable mechanical system operation.
Exception #1: Local jurisdictions within Alabama may adopt, amend, or selectively enforce provisions of the IMC, resulting in variations in application across the state.
Exception #2: Historic buildings may follow alternative compliance paths to maintain architectural features while meeting essential mechanical standards.
CODE REFERENCE GUIDE
| Area | Primary | Supplement |
|---|---|---|
| HVAC System Design and Installation | IMC 2009 | NONE |
| Refrigeration Systems | IMC 2009 | NONE |
| Ventilation and Exhaust | IMC 2009 | NONE |
| Ductwork and Piping | IMC 2009 | NONE |
| Mechanical Equipment Efficiency | IMC 2009 | IECC |
| Combustion Air Requirements | IMC 2009 | NONE |
| Inspection and Testing | IMC 2009 | NONE |
| Fire and Smoke Control | IMC 2009 | NFPA 90A |
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