MOHNTON, Pa. -- Energy-saving devices could provide supermarkets with some much needed relief on their fuel bills, a utility consultant told SN. Energy-saving devices that bolt on to air conditioning units, refrigerators and chillers can relieve pressure to the equipment's compressor units. "When you do that, you prolong the life of compressors so you won't have to replace them as often and lighten the load. You can reduce refrigeration costs by 30% to 40%," said Ken Wnek, vice president, ...

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