Residential dumbwaiters are used to bring food from the kitchen to the dining room on the upper floor. You can also use them to carry laundry from the utility room to bedrooms on different floors. Outdoor versions of this device are usually used to transport heavier items such as firewood, groceries, suitcases and a host of other goods from the yard into the home. With a residential dumbwaiter installed, you wouldn’t have to worry about carrying such stuff up and down the stairs.