Washington State Forms Refrigerant Task Force for Ultra-Low GWP Transition Study
Washington State has convened a multi-stakeholder task force to assess the technical and economic feasibility of mandating ultra-low global warming potential refrigerants beyond the current A2L transition already underway across the nation.
The task force includes HVAC contractors, equipment manufacturers, distributors, labor unions, environmental advocacy groups, and state regulators. Their mission: determine whether Washington should require refrigerants with GWP values below 150—potentially natural refrigerants like propane (R-290), ammonia (R-717), or CO2 (R-744)—in residential and light commercial applications within the next five to seven years.
This moves beyond the AIM Act's current framework. Federal regulations already phase down HFCs and effectively mandate A2L refrigerants like R-32 (GWP 675) and R-454B (GWP 466) for most new equipment by January 2025. Washington is now exploring whether to leapfrog that standard entirely. The task force will evaluate equipment availability, technician safety training requirements, code modifications for flammable refrigerants, and retrofit costs for existing systems.
For contractors, this represents a potential second major equipment transition in less than a decade. If Washington proceeds—and other states follow—you could be installing A3-rated propane systems or transcritical CO2 units in residential applications by 2030. That means additional EPA 608 certification modules, different leak detection protocols, and entirely new service procedures. R-290 systems, for example, require charge limits under 150 grams for safety, which restricts equipment sizing and may require multiple outdoor units for larger homes.
What to do this week: Monitor the task force's public comment periods, expected to open in Q2 2025. If you operate in Washington or adjacent states, start researching ultra-low GWP equipment now—several European and Asian manufacturers already produce R-290 mini-splits and heat pumps. Consider attending manufacturer training on natural refrigerants before mandates hit. Stock smaller recovery tanks rated for A3 refrigerants, and review your liability insurance coverage for flammable refrigerant work.
The task force will deliver recommendations to the state legislature by December 2025. Contractors should also calculate the business impact: ultra-low GWP systems typically cost 15-25% more than A2L equivalents today, and service calls require longer tech times due to stricter safety protocols. Customer education will be critical—homeowners need to understand why their new heat pump uses a different refrigerant than their neighbor's unit installed six months earlier.
This isn't just a Washington issue. California, Oregon, and New York have expressed interest in similar ultra-low GWP standards. The industry may face a patchwork of state-level refrigerant requirements that complicates equipment stocking and technician training across regional markets.
Original source: Contracting Business