Is there currently a restriction on the sale of HFC-134a?

HFC-134a, or 1,1,1,2-tetrafluoroethane, is a hydrofluorocarbon that was commonly used in automotive air conditioning systems and other applications. As of the latest regulations, HFC-134a does not have a ban on its sale at a federal level, which means that in general, individuals and technicians can still purchase and use it freely without specific sales restrictions imposed on it.

This understanding aligns with current practices in areas such as maintenance and repair of automotive air conditioning systems, where HFC-134a remains an acceptable refrigerant to use. While there are efforts and regulations addressing climate change by targeting HFCs for phase-down due to their global warming potential in the long term, these have not yet manifested as outright restrictions on the sales of HFC-134a.

However, it is important to note that some regulations may change at state levels or specific contexts regarding usage and production, but these do not categorize under a federal restriction on the outright sale. Therefore, the answer indicating "no, there are no restrictions" reflects the current regulatory landscape accurately.