Understanding A2L Refrigerants for Air Conditioners
Codes & Standards Adoption Flow
Updated standards and codes are being written, but it is a lengthy and difficult process.
ASHRAE
Standard 34
Designation
and Safety
Classification
Ready
Safety Standards
Refrigeration
Systems: ASHRAE
Standard 15
Equipment: Relevant
UL/EN/ISO Standards
EPA SNAP
Ready
Approval
Significant New
Alternatives
Approvals
Policy Program
submitted
2016 2017 2018
2019
Model
Building
Codes
State and
Local
Codes
UMC
IMC/IRC
2020 2021 2022+
UMC, Uniform Mechanical Code
IMC/IRC, International Mechanical Code/International Residential Code
Efforts to make changes to building codes have
faced much opposition and resistance due to a lack
of knowledge and misinformation.
There is a patchwork of building code adoption
IMC Adoption Statewide
IMC Adoption by Jurisdiction, All Adopted IMC
UMC Adoption Statewide
UMC Adoption by Jurisdiction, All Adopted UMC
Mixed Adoption (IMC, UMC, IFGC, IBC, UPC, etc.)
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