For decades, heat-pumping, energy-sapping high-intensity discharge (HID) light fixtures were the norm in freezers at cold-storage facilities across the country. A few years ago, high-efficiency fluorescent lighting improved its cold temperature performance, sparking a wave of money-saving freezer retrofits. And now, another development: light-emitting diode (LED) technology has stepped strong into the cold-storage arena and flexed its muscle in freezers, showing it thrives in the coldest conditions. READ MORE