L'EPA aux Etats-Unis propose d'interdire les HFC à GWP élevé dans le conditionnement d'air mobile et le froid commercial (en anglais)

L'EPA a proposé en juillet dernier d'interdire l'utilisation de certains HFC ou mélanges de HFC comme le R134a, le R404A, le R407C et le R410A.
The US Environmental Protection Agency (EPA) proposed in July 2014 to change the status of certain HFCs with high GWP previously listed as acceptable under the US EPA’s Significant New Alternatives Policy (SNAP) Program to unacceptable in several end-uses.

This proposal includes the following:

. R134a could be unacceptable in new mobile air conditioning (MAC) systems in newly manufactured light-duty vehicles, starting with model year 2021.

. R134a and other HFC blends (e.g. R404A, R407C, R410A, etc.) could be unacceptable in new stand-alone retail food refrigeration and vending machines as of 2016.

. HFC blends R-507A and R-404A could be unacceptable in new and retrofit vending machines and new and retrofit retail food refrigeration, including stand-alone equipment, condensing units, direct supermarket systems, and indirect supermarket systems.

The emissions reductions from this proposed rule are estimated to be 31 to 42m metric tons of CO2 equivalent in 2020.
The US EPA is accepting comments to the proposed rule until October 20, 2014.