Washington State Refrigerant Regulations: Bans, Fees, and Penalties

Washington State refrigerant regulations ban dozens of high-global-warming HFCs from new commercial equipment and require any facility holding 50 or more pounds of a refrigerant with a global warming potential (GWP) of 150 or higher to register with the Department of Ecology, inspect for leaks on a set schedule, repair leaks within 14 days, and keep five years of records. The rules sit in Chapter 70A.60 RCW and Chapter 173-443 WAC, and they stack on top of the federal AIM Act and EPA Section 608 program. If your equipment uses a refrigerant below the 150 GWP threshold, most of the state program does not apply to you.

Which Refrigerants Are Banned in New Equipment

WAC 173-443-040 lists prohibited substances by end-use category with staggered effective dates. The categories most owners encounter:

Existing systems already running on a now-prohibited refrigerant can generally keep operating. The ban hits at installation or retrofit. Equipment that already uses a refrigerant with a GWP below 150 and is not a Class I or Class II ozone-depleting substance is exempt from these prohibitions entirely.3Washington State Legislature. Washington Code 70A.60.030 – Refrigerant Management Program

Federal EPA rules under the AIM Act also impose GWP ceilings by sector, several of which took effect January 1, 2026. Industrial process refrigeration chillers with exiting fluid temperatures at or above -30°C face a federal GWP limit of 700, and non-chiller industrial process systems with 200 or more pounds of refrigerant face a limit of 150.4US EPA. Technology Transitions HFC Restrictions by Sector Check both the state and federal limits before specifying a refrigerant for any new installation; the stricter rule controls.

Who Has to Register with the Refrigerant Management Program

The Refrigerant Management Program (RMP) applies to any facility with a stationary refrigeration or air conditioning system holding 50 or more pounds of a refrigerant with a GWP of 150 or higher.5Legal Information Institute. Washington Administrative Code 173-443-105 – Refrigerant Management Program Purpose and Applicability If your charge is below 50 pounds, or your refrigerant falls below the 150 GWP line, you are outside the program entirely.

Registration is phased by system size:

  • Large systems: registration was due March 15, 2024. Annual reports begin one year after registration.
  • Medium systems: registration due March 15, 2026. Annual reports begin one year after registration.
  • Small systems: registration due March 15, 2028. No annual reporting required.6Washington State Department of Ecology. Refrigerant Management Program

Registration requires the specific refrigerant designation for each system (R-410A, HFC-134a, and so on), the full charge capacity from the manufacturer’s nameplate or recent service records, and the system’s primary function. Understating charge size can slot you into a lower compliance tier than you actually belong in and expose you to enforcement when Ecology discovers the discrepancy.

Registration Fees for 2026

Medium facilities pay a flat $170 annual participation fee. Large facilities pay a $250 base fee plus $0.15 per metric ton of CO2 equivalent of total refrigerant capacity, capped at $5,000 per facility.7Washington State Department of Ecology. Refrigerant Management Program Fee for 2026 Because the per-ton charge scales with GWP, a facility running a high-GWP blend pays more than one running a moderate-GWP alternative at the same pound-for-pound charge.

Leak Inspection Schedule

Inspection frequency depends on system size, and the obligations phase in alongside registration:

  • Large systems: monthly inspections with a calibrated electronic leak detector or bubble test, in effect since January 1, 2024. Enclosed large systems were required to install automatic leak detection (ALD) by January 1, 2025, and ALD coverage removes the manual-inspection obligation.
  • Medium systems: quarterly inspections, effective January 1, 2026. Qualifying ALD exempts the system from manual inspections.
  • Small systems: annual inspections, effective January 1, 2028. ALD exemption applies.
  • Seasonal systems of 50+ pounds that do not run year-round: an inspection within 30 days of resuming operation, then every 90 days while running.6Washington State Department of Ecology. Refrigerant Management Program

Inspections must be performed by an EPA-certified technician. Leak rates are calculated on a 12-month rolling average, so a slow steady loss will accumulate into a repair trigger even without a single large event.

Leak Repair Deadlines

Once a leak is detected, a certified technician has 14 calendar days to complete the repair.8Legal Information Institute. Washington Administrative Code 173-443-165 – Leak Repair Requirements The clock starts the day of detection, not the day the work is scheduled. Two extensions exist:

  • 45 days, if no certified technician is available, necessary parts are unavailable, or the repair requires shutting down an industrial process. The specific reason must be documented in writing.
  • 120 days, available only to facilities subject to mandatory greenhouse gas reporting under Chapter 173-441 WAC, where the leaking system is industrial process refrigeration and the repair requires a process shutdown. All four conditions must be met and documented.8Legal Information Institute. Washington Administrative Code 173-443-165 – Leak Repair Requirements

A verification test follows every repair. If the system was evacuated during the work, a follow-up verification test must occur within 14 days of the system returning to normal operating conditions. A failed repair triggers an obligation to submit a retrofit or retirement plan for the equipment.

Federal Section 608 rules allow 30 days for most commercial repairs and 120 days when an industrial process shutdown is needed.9U.S. Environmental Protection Agency. Stationary Refrigeration Leak Repair Requirements Washington’s 14-day default is substantially tighter, so a schedule built around federal timelines will put you out of compliance in the state.

Technician Certification and Who Can Buy Refrigerant

Anyone who services, repairs, or disposes of refrigerant-containing equipment must hold EPA Section 608 certification. The four levels are Type I for small appliances, Type II for high-pressure systems such as standard air conditioners, Type III for low-pressure systems such as centrifugal chillers, and Universal for all types. A core exam is required before any type exam.10U.S. Environmental Protection Agency. Regulatory Updates – Section 608 Refrigerant Management Regulations Washington’s leak repair provisions specifically require a certified technician, and the recordkeeping rules require you to document that certification.

On the sales side, federal rules in effect since January 1, 2025, restrict sales of HFC refrigerants in containers over two pounds to EPA 608-certified buyers. Sellers must verify and record the buyer’s certification number and type at the point of sale. Federal fines for noncompliant sales can reach $44,539 per violation, and a checkbox on a website does not satisfy the verification requirement.

Recordkeeping and Annual Reporting

Every covered facility must keep records for at least five years, stored at the facility and available to Ecology on request.11Washington State Legislature. Washington Administrative Code 173-443-195 – Recordkeeping Requirements Required documentation includes:

  • Registration data: system type, refrigerant designation, and full charge capacity.
  • Leak inspection records: results of every manual inspection, ALD audit, calibration, and leak rate calculation.
  • Service and repair records: invoices, technician certifications, and documentation of any 45-day or 120-day extensions used.
  • Refrigerant purchase invoices for all purchases of refrigerants with a GWP of 150 or more.
  • Reclamation and destruction records: shipping details, recipient, date, refrigerant type, and purpose for anything sent out for reclamation or destruction.
  • Retrofit or retirement plans when a leak repair fails.

Large and medium facilities file annual reports beginning one year after their registration date, covering the data specified in WAC 173-443-185 for all Washington facilities. Small facilities register but do not file annual reports.6Washington State Department of Ecology. Refrigerant Management Program Distributors, wholesalers, and reclaimers who handle refrigerants with a GWP of 150 or more must also keep transaction records for five years.12Legal Information Institute. Washington Administrative Code 173-443-225

Penalties for Noncompliance

Violations of Chapter 70A.60 RCW are enforceable under Chapter 70A.15 RCW, which authorizes civil penalties of up to $10,000 per violation per day.13Washington State Legislature. Washington Code 70A.15.3160 Each day a violation continues is a separate offense. A facility that lets a leak sit unrepaired past the 14-day deadline for two weeks could face 14 separate daily penalties. Ecology has used this authority in practice: in 2024, it penalized a national retailer for selling equipment containing prohibited HFC refrigerants in violation of Washington law.14Washington State Department of Ecology. June 27 – Home Depot HFC Penalty

Before penalties issue, Ecology must follow the procedural steps in Chapter 43.05 RCW, which include site inspections, technical assistance visits, and notices of correction.2Washington State Legislature. Washington Code 70A.60 – Hydrofluorocarbons That window is an opportunity to fix problems before fines accumulate. Ignoring a notice of correction forecloses any good-faith argument later.