Chapter 173-443 WAC

On July 30, 2019, Ecology adopted a new emergency rule and is working on a permanent rule:  Chapter 173-443 WAC, Hydrofluorocarbons. The purpose of this rulemaking is to establish requirements to move away from hydrofluorocarbons (HFCs). HFCs are powerful greenhouse gases that are made up of hydrogen, fluorine, and carbon. This is similar to rules that EPA and other states have adopted or are adopting.

The emergency rule requires manufacturers, importers, and distributors to notify Ecology about their products and equipment that contain hydrofluorocarbons:

  • Initial notification — due by Dec. 31, 2019
    (The notification form will be posted here by Sept. 3.)

The permanent rule requires manufacturers, importers, and distributors to:

  • Notify Ecology about their products and equipment that contain hydrofluorocarbons — due when new restrictions apply (2021-2024).
  • Label the product or equipment that contains hydrofluorocarbons.

Rulemaking timeline


Announcement phase (CR-101)

Filing date:
July 30, 2019

Announcement documents

Rule development phase

July 30, 2019 — Summer 2020

Public input & involvement

Ecology's meetings with stakeholders
Date Agenda Location
Sept. 11, 2019
9:30 a.m. - 11:30 a.m.
Information about how to:
• Fill out the notification form. 1
• Get a SAW account.
• Submit your notification form. 1

1 The notification form will be posted by Sept. 3.
* Webinar information:
   Register for the webinar to get your access code and password.
   To hear the webinar better, use your phone (instead of the computer) to call 1-855-929-3239.

Emergency rule adoption (CR-103E)

Adoption date:
July 30, 2019

Rule effective date:
July 30, 2019

Rule adoption documents:

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.