All electricity turns into heat at 100% efficiency (granted some light/sound escapes the house before that happens, but it isn't much).
The fridge is against an interior wall.
The ceiling fans in every room are never off, so waste heat gets circulated pretty well.
And I dunno what your watt-meter is supposed to be telling you about my fridge. I didn't bother to look up the model, but a "typical" for pre-80 uses 2,000kwh/year, and a new one uses 500. 1,500kwh*0.075=$112/year.
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"I would rather be exposed to the inconveniences attending too much liberty, than those attending too small a degree of it." - Thomas Jefferson