Chapters 173-443 and Chapter 173-455 WAC

Ecology proposes to update two rules:

This rulemaking may:

  • Establish maximum global warming potential (GWP) thresholds for hydrofluorocarbons used in new stationary refrigeration and air conditioning equipment.
  • Establish a refrigerant management program with registration, leak detection, and reporting requirements for certain stationary refrigeration and air conditioning systems.
  • Amend product labeling and disclosure requirements.
  • Establish fees to support the refrigerant management program.
  • Update Chapter 173-443 WAC to reflect other changes in the law.

Rulemaking timeline


Announcement phase (CR-101)

Filing date:
Aug. 16, 2021

Announcement documents

Rule development phase

August 16, 2021 – Summer 2023

Additional languages

Español (Spanish) 中文 (Chinese) Tiếng Việt (Vietnamese) 한국어 (Korean)


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