With a powerful compressor and a -5 to 2 degrees Fahrenheit temperature range, this unit efficiently chills the glasses or plates to the perfect temperature to keep your food fresh and your beer crisp and cold. This model uses R290 refrigerant and a forced-air cooling system. This specialized refrigerant has an ozone depletion potential (ODP) of 0 and a global warming potential (GWP) of 3, making it an environmentally-responsible choice for your business. To simplify maintenance, this unit is equipped with an automatic defrost system.