Date,Action,Official citation,Type
2023-01-01,SEER2 and HSPF2 minimums for central AC and heat pumps manufactured on or after this date,10 CFR 430.32(c)(5),Efficiency standard (DOE)
2025-01-01,No manufacture or import of self-contained residential AC and heat pump products using refrigerant with GWP 700 or greater,40 CFR 84.54(a)(1),Refrigerant transition (EPA)
2025-06-04,Section 232 duty on steel and aluminum articles and derivatives raised to 50 percent,"Proclamation 10947, 90 FR 24199",Tariff (imports)
2025-08-01,50 percent Section 232 duty on semi-finished copper products and intensive copper derivatives,"Proclamation 10962, 90 FR 37727",Tariff (imports)
2026-06-08,Certain residential HVAC systems and components placed in the temporarily reduced 15 percent derivative category,"Proclamation 11032, 91 FR 34085",Tariff (imports)
2028-12-18,Next AFUE step for non-weatherized gas furnaces (future),10 CFR 430.32(e)(1)(ii),Efficiency standard (DOE)