Question 53Refrigeration & AC - 1st Asst/Chief

The correct answer is A) a hermetically sealed water cooler with a 2 lb. refrigerant charge. According to the EPA Clean Air Act rules, a "small appliance" is defined as any appliance that is fully manufactured, charged, and hermetically sealed in a factory with 5 pounds or less of refrigerant. A hermetically sealed water cooler with a 2 lb. refrigerant charge falls within this definition. The other options, such as a walk-in freezer, split air conditioning system, and large chiller, would be considered larger commercial/industrial refrigeration and air conditioning systems that are subject to different regulations under the Clean Air Act.