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The Building Code Blog

A2L Refrigerants: A Code Requirement Overview

10/11/2024

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As the global push towards environmentally friendly solutions continues, the HVAC industry has been experiencing a shift in refrigerant technology. A2L refrigerants, categorized as "mildly flammable,” have been a hot conversation topic in the construction community. The push towards eliminating A1 refrigerants, which have a higher Global Warming Potential (GWP), has coincided with additional design requirements for A2L refrigerants that have been challenging for many architects and engineers.

​In this article, we'll provide a detailed overview of A2L refrigerants, touching on everything from their fundamental characteristics to the critical code requirements surrounding their installation and use. 

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The views, opinions, and information found on this site represent solely the author and do not represent the opinions of any other party, including the author's employer and the International Code Council, nor does the presented material assume responsibility for its use.  Local codes and amendments may vary from the code requirements described herein. Fire protection and life safety systems constitute a critical component of public health, safety and welfare and you should consult with a licensed professional for proper design and code compliance.
  • Home
  • Blog
  • About
  • Tools
    • Allowable Height & Area Calculator - Non-Separated Mixed Occupancy
    • Allowable Height & Area Calculator - Separated Mixed Occupancy
    • Average Grade Plane Calculator
    • Calculated Fire Resistance for Wood Walls
    • Fire and Smoke Damper Tool
    • Fire Wall/Exterior Wall Intersection Tool
    • Frontage Calculator
    • IBC Occupant Load Calculator
    • Plumbing Fixture Calculator
    • Stair Pressurization Estimator