At ATMOsphere America, Professor Pega Hrnjak challenges AHAM to offer a contest for developing a full-size home refrigerator using 57 g or less of isobutane.
Two appliance outlets apply magnetic stickers provided by National Ozone Unit to R600a fridges.
AHAM wants EPA to raise limit to 150 g from 57 g so manufacturers can build larger R600a units in U.S.
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