Before we get into which appliance is best for you, let’s look into the differences between these appliances. A fridge is an appliance that is designed to keep your food cold and fresh. The cool temperatures protect your food against bacteria activity, which spoils your food. On the other hand, a freezer is designed to freeze your food, and keep it frozen. This keeps your food from becoming spoiled for a much longer time. Finally, the difference between a fridge freezer and two separate fridge and freezer units is that a fridge freezer has both a fridge and a freezer section. The layout of these will depend on your chosen model.