There is nothing in Whirlpool refrigerators that can explode. They use R-134a as the refrigerant. It isn't flammable. Also, I don't believe that any American manufacturers use R-600 (isobutane), which is used in Europe. I don't know what the Asian manufacturers use. I was responsible for the design and testing of Whirlpool refrigerators for a number of years before I retired. We considered R-600 and rejected it because it was flammable. If the explosion was centered at the refrigerator, there must have been something flammable stored in it.
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