Yes, they have refrigerators. Sorry, I'm from Canada and our milk comes in Liters, so I'm not sure what a half gallon container looks like. If it's the tall, skinny jug, then you can probably fit one jug and other things, or you can fit two with one in the door and one sideways in the fridge and not much of anything else. They don't have a freezer compartment and the shelves come out easily - but be careful with what you put directly on the bottom/back as it will freeze if the temperature is turned up past the midway point.