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

Public input & involvement

Ecology's meeting with stakeholders

Date Documents Location
Feb. 3, 2022
2 p.m. – 4:30 p.m.
Agenda webinar 1

1 Webinar information:
   Register for each webinar to get your access code and password.
   To hear the webinar better or to call in only, use your phone (instead of the computer) to call 1-855-929-3239.

Additional languages

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


To request ADA accommodation for disabilities, or printed materials in a format for the visually impaired, contact Ecology's ADA Coordinator by email at, or call 360-407-6831. People with impaired hearing may call Washington Relay Service at 711. People with speech disability may call TTY at 877-833-6341.