EPA Releases New Delisted Refrigerant List

Posted on: September 10, 2015 | by: HVAC.com July 26, 2017

The U.S. Environmental Protection Agency (EPA) recently released a new list of refrigerants to be delisted. The delisted classification of these refrigerants will occur between 2016 and 2020. The new delisted refrigerant list includes those used in new and retrofit equipment applications for food refrigeration equipment and vending machines, as well as new remote condensing equipment. Refrigerants used to manufacture insulation, in air conditioning, and in automobile air conditioning are also on the list.

 

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The latest EPA ruling is part of the Significant New Alternatives Policy (SNAP) program. As a part of this program, the EPA will regularly evaluate ODS alternatives in order to identify refrigerants that pose less risk to the environment as well as human health. The acceptable alternatives list is evaluated by the EPA and revised as necessary as alternatives become available for specific applications.

 

HVACR refrigerants that have been delisted include:

 

  • Retrofitted supermarket systems: R–404A, R–407B, R–421B, R–422A, R– 422C, R–422D, R–428A, R–434A, and R–507A as of July 20, 2016
  • New supermarket systems: HFC– 227ea, R–404A, R–407B, R–421B, R– 422A, R–422C, R–422D, R–428A, R– 434A, and R–507A as of January 1, 2017
  • Retrofitted remote condensing units: R–404A, R–407B, R–421B, R– 422A, R–422C, R–422D, R–428A, R– 434A, and R–507A as of July 20, 2016
  • New remote condensing units: HFC–227ea, R–404A, R–407B, R–421B, R–422A, R–422C, R–422D, R–428A, R– 434A, and R–507A as of January 1, 2018.
  • Retrofitted vending machines: R– 404A and R–507A as of July 20, 2016.
  • New vending machines: FOR12A, FOR12B, HFC–134a, KDD6, R–125/290/ 134a/600a(55.0/1.0/42.5/1.5), R–404A, R–407C, R–410A, R–410B, R–417A, R–421A, R-422B, R–422C, R–422D, R–426A, R–437A, R–438A, R–507A, RS–24 (2002 formulation), and SP34E as of January 1, 2019.
  • Retrofitted stand-alone retail food refrigeration equipment: R–404A and R–507A as of July 20, 2016
  • New stand-alone medium-temperature units with a compressor capacity below 2,200 Btu/hr and not containing a flooded evaporator: FOR12A, FOR12B, HFC–134a, HFC– 227ea, KDD6, R–125/290/134a/600a (55.0/1.0/42.5/1.5), R–404A, R–407A, R–407B, R–407C, R–407F, R–410A, R–410B, R-417A, R–421A, R–421B, R–422A, R–422B, R–422C, R–422D, R–424A, R–426A, R–428A, R–434A, R–437A, R–438A, R–507A, RS–24 (2002 formulation), RS–44 (2003 formulation), SP34E, and THR–03 as of January 1, 2019.
  • New stand-alone medium-temperature units with a compressor capacity equal to or greater than 2,200 Btu/hr and stand-alone medium-temperature units containing a flooded evaporator: FOR12A, FOR12B, HFC–134a, HFC–227ea, KDD6, R–125/290/134a/600a (55.0/1.0/42.5/1.5), R–404A, R–407A, R–407B, R–407C, R–407F, R–410A, R-410B, R–417A, R–421A, R– 421B, R–422A, R–422B, R–422C, R– 422D, R–424A, R–426A, R–428A, R–434A, R–437A, R–438A, R–507A, RS–24 (2002 formulation), RS–44 (2003 formulation), SP34E, and THR–03 as of January 1, 2020.
  • New stand-alone low-temperature units: HFC–227ea, KDD6, R–125/290/134a/600a (55.0/1.0/42.5/1.5), R–404A, R–407A, R–407B, R–407C, R–407F, R–410A, R–410B, R-417A, R–421A, R– 421B, R–422A, R–422B, R–422C, R– 422D, R–424A, R–428A, R-434A, R– 437A, R–438A, R–507A, and RS–44 (2003 formulation) as of January 1, 2020.

 

During the comment period associated with this ruling, several questions were posed which prompted the EPA to issue clarifications. Clarifications related to the terms used by the EPA to describe the end-use categories of the affected systems, as well as types of equipment that fall outside of the categories and end-uses mentioned in the ruling. New and retrofit terms will be clarified regarding their relation to the servicing of existing equipment.

 

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