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2016 Toyota Tacoma and the new R-1234YF Refrigerant

Discussion in 'Toyota Truck, Van and SUV' started by MG, Nov 1, 2015.

  1. MG

    MG Moderator Staff Member

    A new air conditioning refrigerant, R-1234yf, is being introduced in the new 2016 Toyota Tacoma. R-1234yf is a new environmentally-friendly refrigerant that has a 99.7% lower Global Warming Potential (GWP) than R-134a. GWP is a value used to compare different greenhouse gases that trap heat in the atmosphere. A new oil PS-D1 is also used.

    The new refrigerant received final approval from the U.S. Environmental Protection Agency (EPA) in 2012. The EPA and U.S Department of Transportation have adopted new standards for reducing greenhouse gas emissions from light-duty motor vehicles. In addition, the European Union has adopted similar standards. European regulations ban the use of R-134a in all new vehicles by 2017.

    The new refrigerant does not require significant changes to the design of automotive air conditioning systems. It also can be handled in service centers in much the same way as R-134a, although it does require dedicated service equipment. R-1234yf stands for a specific compound: 1 – double bond, 2 – hydrogens, 3 – carbons, 4- fluorines, yf – position of the fluoro atoms.

    It is a worldwide industry accepted solution for a low GWP refrigerant. The biggest benefit of the new refrigerant is that it breaks down faster in the atmosphere than R-134a. On average, R-134a has an atmospheric life of more than 13 years, giving it a GWP of over 1,400. R-1234yf stays in the atmosphere for only 11 days, for a GWP of 4. R-1234yf refrigerant is considered mildly flammable and has thermodynamic properties similar to R-134a.

    R-1234yf standards require service equipment and evaporators with safety features that cover this concern. In addition, new SAE J2843-compliant Recovery/Recycle/Recharge machines must feature integrated refrigerant identifiers or a USB port for connection with a hand-held identifier. Current identifiers cannot identify R-1234yf refrigerant.

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