Some of the world's largest consumer product companies are promoting freezers and refrigerators in the U.S. that use propane, butane and other coolants that don't trap heat in the atmosphere as much as Freon and other conventional refrigerants.
The new so-called hydrocarbon coolers — already popular in Europe — are being tested by Ben & Jerry's ice cream company at stores in the Washington and Boston areas. Meanwhile, General Electric is seeking approval to market a home refrigerator in the U.S. using a hydrocarbon refrigerant.
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