LUBBOCK, Texas — United Supermarkets here has retrofitted low- and medium-temperature refrigerated display cases in all of its 47 stores with a light-emitting diode (LED) solution from Lumination, ...

A unique mechanical design aspires to remove heat from this LED light bulb’s insides, but you still need to keep external ventilation in mind.

While they do have a higher upfront cost, led lights are more efficient and last far longer than incandescent, fluorescent, or halogen bulbs, and can provide the warm or cool light temperatures your ...