There are many different types of appliances that can be built into a kitchen. Some of the most common are ovens, dishwashers, refrigerators, and microwaves. Ovens can be either gas or electric, and dishwashers can be either under-counter or full-size models. Refrigerators come in a variety of sizes and can have features such as ice makers and water dispensers. Microwaves can also come in a variety of sizes and can have features such as convection cooking.