--- type: jurisdictional-variation id: existing-equipment-that-undergoes-a-retrofit-washington asset: hfc-refrigerant-regulations-by-state title: "Washington — HFC refrigerant GWP regulations by US state" sources: - https://nasrc.org/hfc-policy-tracker/ source_quote: "Washington has Finalized a rulemaking to update Chapter 173-443 WAC for HFCs and other fluorinated greenhouse gases that: Established GWP threshold less than 150 for HFCs used in new equipment (Jan 1, 2025) Established GWP threshold less than 150 for existing equipment that undergoes a retrofit (Jan 1, 2029)" generated: true harvested: 2026-08-05 stale_after: 2027-02-01 state: "Washington" equipment_category: "Existing equipment that undergoes a retrofit" gwp_limit: "less than 150" effective_date: "Jan 1, 2029" regulatory_status: "signed into law" regulation_citation: "Chapter 173-443 WAC" verified: true --- **State:** Washington **Equipment category:** Existing equipment that undergoes a retrofit **GWP limit:** less than 150 **Effective date:** Jan 1, 2029 **Regulatory status:** signed into law **Regulation citation:** Chapter 173-443 WAC > Washington has Finalized a rulemaking to update Chapter 173-443 WAC for HFCs and other fluorinated greenhouse gases that: Established GWP threshold less than 150 for HFCs used in new equipment (Jan 1, 2025) Established GWP threshold less than 150 for existing equipment that undergoes a retrofit (Jan 1, 2029) Source: