Location: The location of a microwave oven will be the starting point for choosing the size and even the type of the appliance.
Lifestyle: if the microwave oven is purchased for a household with many members, it will be heavily used. This will dictate the cleaning terms, since the oven will need to be cleaned rather frequently. Microwaves used just for heating up food will differ from ovens that are used for cooking.
Size and Power: Depending on the purpose the oven will be used for, the size and power should be chosen. For example, smaller ovens use less power and are perfect for offices, dorms and apartments. Larger ones are better for homes and small restaurants.
Features: Different ovens have different varieties of features. Microwave oven features are chosen in accordance to the needs of the user.
Types: There are several microwave oven types. The type of oven will be chosen depending on how complicated the user wants the cooking options to be.
Budget: There is a great variety of different microwave ovens out there. The cost will depend on many factors, including the size, the wattage and the functionality.