When it comes to capacity, buying separate units is the clear favourite. A separate fridge and freezer combo can easily offer you upwards of a combined 1000 litres of capacity. This is perfect for big, hungry families. However, the downside to this is that you will use up more floor space. This means that there are more limitations in terms of physical space with two separate appliances. But, if you have a big family and plenty of room for the two appliances, this may be the best option for you in terms of overall capacity. When you have a big family, being able to buy and store in bulk helps massively with food costs. It can also help you to keep food waste to a minimum. However, if you have a smaller family, you should be able to fit everything you need into a fridge freezer. This is especially true if you get an American style fridge freezer, which has a bigger capacity on average. In the end, the better option will depend on how much fridge and freezer space that your household needs. To help you understand how much space you may need, we discuss capacity requirements in both our fridge and freezer buying guides.