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About This Item

 

Full Description

ICC IMC-2021 establishes minimum regulations for mechanical systems using prescriptive and performance-related provisions. The IMC was developed with broad-based principles that make possible the use of new materials, methods and design.

Important changes in the edition include:
  • Clothes dryer exhaust terminals required to be at least 3 feet from any opening into a building.
  • Polyurethane spray-applied foam on the exterior of ducts in attics and crawl spaces required to meet specific smoke and flame index limits.
  • Fire and smoke dampers must be provided with approved access for inspection and maintenance.
  • Refrigerant tables updated to include new refrigerants.
  • Addition of condensate termination identification markings and discharge restrictions.
  • Approved factory-built combination intake/exhaust terminations permitted, relaxing separation requirement.
  • 30% reduction in minimum mechanical ventilation for whole-house balanced ventilation systems.
  • Continuous operation requirement for manicure and pedicure station exhaust systems.
  • Grease duct horizontal cleanout required within 3 feet of a horizontal discharge fan.
 

Document History

  1. ICC IMC-2021

    👀currently
    viewing


    2021 International Mechanical Code

    • Most Recent
  2. ICC IMC-2018


    2018 International Mechanical Code

    • Historical Version
  3. ICC IMC-2015


    2015 International Mechanical Code

    • Historical Version
  4. ICC IMC-2012


    2012 International Mechanical Code

    • Historical Version
  5. ICC NY-MC-2010


    Mechanical Code of New York State, 2010 Edition

    • Historical Version
  6. ICC IMC-2009


    2009 International Mechanical Code

    • Historical Version
  7. ICC NY-MC-2007


    Mechanical Code of New York State, 2007

    • Historical Version
  8. ICC IMC-2006


    2006 International Mechanical Code

    • Historical Version
  9. ICC IMC-2003


    2003 International Mechanical Code

    • Historical Version
  10. ICC IMC-2000


    2000 International Mechanical Code

    • Historical Version