Yes, a single-door refrigerator is usually sufficient for a family of 2. The size of the refrigerator needed for a family depends on the amount of food that needs to be stored and the frequency of grocery shopping. For a family of 2, a standard single-door refrigerator with a capacity of around 200-300 litres is generally adequate.
However, if the family tends to cook and eat at home frequently or if they store a lot of perishable items such as fruits, vegetables, and dairy products, then a double door refrigerator with larger capacity may be needed. It is also significant to consider the layout of the kitchen and the available space before selecting a refrigerator.
Overall, it's important to choose a refrigerator size that suits the needs of your family, taking into account factors such as the number of people in the household, their eating habits, and the available kitchen space.