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RefrigeratorsMost domestic refrigerators are transitioning from HFC-134a refrigerant (which has over a thousand times the global warming potential of CO2) to climate-friendly refrigerants like R600a. In addition to being more energy efficient, these refrigerators are also typically quieter!
As of 2022, Energy Star has made it easy to find efficient products that use climate-friendly refrigerants. Simply use the ENERGY STAR Product Finder and use the refrigerant filter to select products with "lower impact on global warming." 
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